Add enable button for settings-UI

* Revert "[Hosts] Add UITest Cases for Hosts Module (#37600)"

This reverts commit c656dcc9c5.

* Matching all UITest projects and UITestAutomation project

* Add back Hosts UITests

---------

Co-authored-by: Jerry Xu <nxu@microsoft.com>

.github/actions/spell-check/allow/code.txt

@@ -263,6 +263,10 @@ onefuzz
 
 # NameInCode
 leilzh
+mengyuanchen
+
+# DllName
+testhost
 
 #Tools
-OIP
+OIP

.github/actions/spell-check/expect.txt

@@ -734,6 +734,7 @@ KEYBDINPUT
 keyboardeventhandlers
 keyboardmanagercommon
 KEYBOARDMANAGEREDITOR
+KEYBOARDMANAGEREDITORLIBRARYWRAPPER
 keyboardmanagerstate
 keyboardmanagerui
 KEYEVENTF
@@ -1282,7 +1283,7 @@ rectp
 RECTSOURCE
 recyclebin
 Redist
-reencode
+Reencode
 reencoded
 REFCLSID
 REFGUID

.pipelines/ESRPSigning_core.json

@@ -128,6 +128,7 @@
                 "PowerToys.KeyboardManager.dll",
                 "KeyboardManagerEditor\\PowerToys.KeyboardManagerEditor.exe",
                 "KeyboardManagerEngine\\PowerToys.KeyboardManagerEngine.exe",
+                "PowerToys.KeyboardManagerEditorLibraryWrapper.dll",
 
                 "PowerToys.Launcher.dll",
                 "PowerToys.PowerLauncher.dll",

.pipelines/v2/templates/job-build-project.yml

@@ -456,12 +456,6 @@ jobs:
       Copy-Item src\gpo\assets\* "$(JobOutputDirectory)/gpo" -Recurse
     displayName: Stage GPO files
 
-  - ${{ if eq(parameters.publishArtifacts, true) }}:
-    - publish: $(JobOutputDirectory)
-      artifact: $(JobOutputArtifactName)
-      displayName: Publish all outputs
-      condition: always()
-
   # Running the tests may result in future jobs consuming artifacts out of this build
   - ${{ if eq(parameters.runTests, true) }}:
     - task: CopyFiles@2
@@ -471,17 +465,8 @@ jobs:
         contents: '$(BuildPlatform)/$(BuildConfiguration)/**/*'
         targetFolder: '$(JobOutputDirectory)\$(BuildPlatform)\$(BuildConfiguration)'
 
-    - task: CopyFiles@2
-      displayName: Stage entire build output
-      inputs:
-        sourceFolder: $(JobOutputDirectory)
-        contents: |-
-          **
-          !**\*.pdb
-          !**\*.lib
-        targetFolder: '$(JobOutputDirectory)\TestArtifacts'
-
-    - publish: $(JobOutputDirectory)\TestArtifacts
-      artifact: $(JobOutputArtifactName)-TestArtifacts
-      displayName: Publish all outputs for testing
+  - ${{ if eq(parameters.publishArtifacts, true) }}:
+    - publish: $(JobOutputDirectory)
+      artifact: $(JobOutputArtifactName)
+      displayName: Publish all outputs
       condition: always()

.pipelines/v2/templates/job-test-project.yml

@@ -19,7 +19,7 @@ jobs:
     BuildPlatform: ${{ parameters.platform }}
     BuildConfiguration: ${{ parameters.configuration }}
     SrcPath: $(Build.Repository.LocalPath)
-    TestArtifactsName: build-${{ parameters.platform }}-${{ parameters.configuration }}${{ parameters.inputArtifactStem }}-TestArtifacts
+    TestArtifactsName: build-${{ parameters.platform }}-${{ parameters.configuration }}${{ parameters.inputArtifactStem }}
   pool:
     ${{ if eq(variables['System.CollectionId'], 'cb55739e-4afe-46a3-970f-1b49d8ee7564') }}:
       ${{ if ne(parameters.platform, 'ARM64') }}:
@@ -61,13 +61,9 @@ jobs:
         reg add "HKLM\Software\Policies\Microsoft\Edge\WebView2\ReleaseChannels" /v PowerToys.exe /t REG_SZ /d "3"
       displayName: "Enable WebView2 Canary Channel"
 
-  - download: current
-    displayName: Download artifacts
-    artifact: $(TestArtifactsName)
-    patterns: |-
-      **
-      !**\*.pdb
-      !**\*.lib
+  - template: steps-download-artifacts-with-azure-cli.yml
+    parameters:
+      artifactName: $(TestArtifactsName)
 
   - template: steps-ensure-dotnet-version.yml
     parameters:

.pipelines/v2/templates/steps-download-artifacts-with-azure-cli.yml

@@ -0,0 +1,33 @@
+parameters:
+- name: artifactName
+  type: string
+  default: ""
+
+# Why use az cli to download? → The ARM agent may run into OutOfMemory issues.  
+# Why use the Azure CLI ZIP version? → It comes with its own Python and works fine under emulation on ARM64.
+# Why not use AzureCLI@2 task? → It requires azureSubscription, which is unnecessary for downloading artifacts.
+
+steps:
+- powershell: |
+    Write-Host "Downloading Azure CLI ZIP..."
+    $azCliUrl = "https://aka.ms/installazurecliwindowszipx64"
+    $azCliZip = "$(Build.ArtifactStagingDirectory)\azure-cli.zip"
+
+    Invoke-WebRequest -Uri $azCliUrl -OutFile $azCliZip
+  displayName: 'Install Azure CLI from ZIP'
+
+- task: ExtractFiles@1
+  inputs:
+    archiveFilePatterns: '$(Build.ArtifactStagingDirectory)\azure-cli.zip'
+    destinationFolder: '$(Build.ArtifactStagingDirectory)\AzureCLI'
+
+- pwsh: |
+    $azureCliPath = "$(Build.ArtifactStagingDirectory)\AzureCLI\bin"
+    $env:Path = "$azureCliPath;" + $env:Path
+    Write-Host "Configuring Azure DevOps defaults..."
+    az devops configure --defaults organization='$(System.TeamFoundationCollectionUri)' project='$(System.TeamProject)' --use-git-aliases true
+    Write-Host "Downloading artifacts..."
+    az pipelines runs artifact download --artifact-name ${{parameters.artifactName}} --path "$(Pipeline.Workspace)/${{parameters.artifactName}}" --run-id $(Build.BuildId) --debug
+  displayName: 'Download artifacts with Azure CLI'
+  env:
+    AZURE_DEVOPS_EXT_PAT: $(System.AccessToken)

.pipelines/verifyDepsJsonLibraryVersions.ps1

@@ -15,8 +15,8 @@ Param(
 $referencedFileVersionsPerDll = @{}
 $totalFailures = 0
 
-Get-ChildItem $targetDir -Recurse -Filter *.deps.json -Exclude UITests-FancyZones*,MouseJump.Common.UnitTests*,AdvancedPaste.FuzzTests* | ForEach-Object {
-    # Temporarily exclude FancyZones UI tests because of Appium.WebDriver dependencies
+Get-ChildItem $targetDir -Recurse -Filter *.deps.json -Exclude *UITest*,MouseJump.Common.UnitTests*,*.FuzzTests* | ForEach-Object {
+    # Temporarily exclude All UI-Test, Fuzzer-Test projects because of Appium.WebDriver dependencies
     $depsJsonFullFileName = $_.FullName
     $depsJsonFileName = $_.Name
     $depsJson = Get-Content $depsJsonFullFileName | ConvertFrom-Json

NOTICE.md

@@ -1322,6 +1322,7 @@ EXHIBIT A -Mozilla Public License.
 - Microsoft.CodeAnalysis.NetAnalyzers 9.0.0
 - Microsoft.Data.Sqlite 9.0.2
 - Microsoft.Diagnostics.Tracing.TraceEvent 3.1.16
+- Microsoft.DotNet.ILCompiler (A)
 - Microsoft.Extensions.DependencyInjection 9.0.2
 - Microsoft.Extensions.Hosting 9.0.2
 - Microsoft.Extensions.Hosting.WindowsServices 9.0.2

doc/devdocs/UITests.md

@@ -0,0 +1,91 @@
+# UI tests framework
+
+ A specialized UI test framework for PowerToys that makes it easy to write UI tests for PowerToys modules or settings. Let's start writing UI tests!
+
+## Before running tests  
+
+- Install Windows Application Driver v1.2.1 from https://github.com/microsoft/WinAppDriver/releases/tag/v1.2.1 to the default directory (`C:\Program Files (x86)\Windows Application Driver`)
+
+- Enable Developer Mode in Windows settings
+
+## Running tests
+
+- Exit PowerToys if it's running.
+
+- Open `PowerToys.sln` in Visual Studio and build the solution.
+
+- Run tests in the Test Explorer (`Test > Test Explorer` or `Ctrl+E, T`).
+
+
+## How to add the first UI tests for your modules
+
+- Create a new project and add the following references to the project file. Change the OutputPath to your own module's path.
+  ```
+  	<PropertyGroup>
+  		<OutputType>Library</OutputType>
+  		<!-- This is a UI test, so don't run as part of MSBuild -->
+  		<RunVSTest>false</RunVSTest>
+  	</PropertyGroup>
+  
+  	<PropertyGroup>
+  		<OutputPath>..\..\..\..\$(Platform)\$(Configuration)\tests\KeyboardManagerUITests\</OutputPath>
+  	</PropertyGroup>
+  
+  	<ItemGroup>
+  	    <PackageReference Include="MSTest" />
+  	    <ProjectReference Include="..\..\..\common\UITestAutomation\UITestAutomation.csproj" />
+  	    <Folder Include="Properties\" />
+	</ItemGroup>
+  ```
+- Inherit your test class from UITestBase.
+  >Set Scope: The default scope starts from the PowerToys settings UI. If you want to start from your own module, set the constructor as shown below:
+  
+  >Specify Scope:
+  ```
+  [TestClass]
+  public class RunFancyZonesTest : UITestBase
+  {
+      public RunFancyZonesTest()
+          : base(PowerToysModule.FancyZone)
+      {
+      }
+  }
+  ```
+
+- Then you can start using session to perform the UI operations.
+
+**Example**
+```
+using Microsoft.PowerToys.UITest;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace UITests_KeyboardManager
+{
+    [TestClass]
+    public class RunKeyboardManagerUITests : UITestBase
+    {
+        [TestMethod]
+        public void OpenKeyboardManagerEditor()
+        {
+            // Open KeyboardManagerEditor
+            this.Session.Find<Button>(By.Name("Remap a key")).Click();
+            this.Session.Attach("Remap keys");
+
+            // Maximize window
+            var window = Session.Find<Window>(By.Name("Remap keys")).Maximize();
+
+            // Add Key Remapping
+            this.Session.Find<Button>(By.Name("Add key remapping")).Click();
+            window.Close();
+
+            // Back to Settings
+            this.Session.Attach(PowerToysModule.PowerToysSettings);
+        }
+    }
+}
+```
+
+## Extra tools and information
+
+ **Accessibility Tools**:
+While working on tests, you may need a tool that helps you to view the element's accessibility data, e.g. for finding the button to click. For this purpose, you could use [AccessibilityInsights](https://accessibilityinsights.io/docs/windows/overview) 

doc/devdocs/modules/launcher/new-plugin-checklist.md

@@ -3,8 +3,9 @@
 - [ ] The plugin is a project under `modules\launcher\Plugins`
 - [ ] Microsoft plugin project name pattern: `Microsoft.PowerToys.Run.Plugin.{PluginName}`
 - [ ] Community plugin project name pattern: `Community.PowerToys.Run.Plugin.{PluginName}`
-- [ ] The plugin target framework should be `net8.0-windows`
+- [ ] The plugin target framework should be `net9.0-windows10.0.22621.0`
 - [ ] If the plugin uses any 3rd party dependencies the project file should import `DynamicPlugin.props`
+- [ ] 3rd party dependencies must be compatible with .NET 9
 - [ ] The plugin has to contain a `plugin.json` file of the following format in its root folder:
 
 ```json
@@ -35,7 +36,6 @@ public static string PluginID => "xxxxxxx"; // The part xxxxxxx stands for the p
 - [ ] Plugin's output code and assets have to be included in the installer [`Product.wxs`](/installer/PowerToysSetup/Product.wxs)
 - [ ] Test the plugin with a local build. Build the installer, install, check that the plugin works as expected
 - [ ] All plugin's binaries have to be included in the signed build [`pipeline.user.windows.yml`](/.pipelines/pipeline.user.windows.yml)
-- [ ] The plugin target framework has to be net8.0-windows. All dependencies should be compatible with .NET 8.
 
 Some localization steps can only be done after the first pass by the localization team to provide the localized resources.
 In the PR that adds a new plugin, reference a new issue to track the work for fully enabling localization for the new plugin.

doc/devdocs/runner.md

@@ -4,18 +4,10 @@ Contains the executable starting point, initialization code and the list of know
 #### [`powertoy_module.h`](/src/runner/powertoy_module.h) and [`powertoy_module.cpp`](/src/runner/powertoy_module.cpp)
 Contains code for initializing and managing the PowerToy modules. `PowertoyModule` is a RAII-style holder for the `PowertoyModuleIface` pointer, which we got by [invoking module DLL's `powertoy_create` function](https://github.com/microsoft/PowerToys/blob/1760af50c8803588cb575167baae0439af38a9c1/src/runner/powertoy_module.cpp#L13-L24).
 
-#### [`powertoys_events.cpp`](/src/runner/powertoys_events.cpp)
-Contains code that handles the various events listeners, and forwards those events to the PowerToys modules. You can learn more about the current event architecture in [shared hooks](/doc/devdocs/shared-hooks.md).
-
-#### [`lowlevel_keyboard_event.cpp`](/src/runner/lowlevel_keyboard_event.cpp)
-Contains code for registering the low level keyboard event hook that listens for keyboard events. Please note that `signal_event` is called from the main thread for this event.
-
-#### [`win_hook_event.cpp`](/src/runner/win_hook_event.cpp)
-Contains code for registering a Windows event hook through `SetWinEventHook`, that listens for various events raised when a window is interacted with. Please note, that `signal_event` is called from a separate `dispatch_thread_proc` worker thread, so you must provide thread-safety for your `signal_event` if you intend to receive it. This is a subject to change.
-
 #### [`tray_icon.cpp`](/src/runner/tray_icon.cpp)
 Contains code for managing the PowerToys tray icon and its menu commands. Note that `dispatch_run_on_main_ui_thread` is used to 
 transfer received json message from the [Settings window](/doc/devdocs/settings.md) to the main thread, since we're communicating with it from [a dedicated thread](https://github.com/microsoft/PowerToys/blob/7357e40d3f54de51176efe54fda6d57028837b8c/src/runner/settings_window.cpp#L267-L271).
+
 #### [`settings_window.cpp`](/src/runner/settings_window.cpp)
 Contains code for starting the PowerToys settings window and communicating with it. Settings window is a separate process, so we're using [Windows pipes](https://learn.microsoft.com/windows/win32/ipc/pipes) as a transport for json messages.
 
@@ -33,3 +25,24 @@ Contains code for telemetry.
 
 #### [`svgs`](/src/runner/svgs/)
 Contains the SVG assets used by the PowerToys modules.
+
+#### [`bug_report.cpp`](/src/runner/bug_report.cpp)
+Contains logic to start bug report tool.
+
+#### [`centralized_hotkeys.cpp`](/src/runner/centralized_hotkeys.cpp)
+Contains hot key logic registration and un-registration.
+
+#### [`centralized_kb_hook.cpp`](/src/runner/centralized_kb_hook.cpp)
+Contains logic to handle PowerToys' keyboard shortcut functionality.
+
+#### [`restart_elevated.cpp`](/src/runner/restart_elevated.cpp)
+Contains logic for restarting the current process with different elevation levels.
+
+#### [`RestartManagement.cpp`](/src/runner/RestartManagement.cpp)
+Contains code for restarting a process.
+
+#### [`settings_telemetry.cpp`](/src/runner/settings_telemetry.cpp)
+Contains logic that periodically triggers module-specific setting's telemetry delivery and manages timing and error handling for the process.
+
+#### [`UpdateUtils.cpp`](/src/runner/UpdateUtils.cpp)
+Contains code to handle the automatic update checking, notification, and installation process for PowerToys.

src/common/Common.UI/Common.UI.csproj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <!-- Look at Directory.Build.props in root for common stuff as well -->
   <Import Project="..\..\Common.Dotnet.CsWinRT.props" />
+  <Import Project="..\..\Common.Dotnet.AotCompatibility.props" />
 
   <PropertyGroup>
     <UseWPF>true</UseWPF>

src/common/Common.UI/SettingsDeepLink.cs

@@ -91,20 +91,20 @@ namespace Common.UI
         {
             try
             {
-                var assemblyPath = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
-                var fullPath = new DirectoryInfo(assemblyPath).FullName;
+                var directoryPath = System.AppContext.BaseDirectory;
                 if (mainExecutableIsOnTheParentFolder)
                 {
                     // Need to go into parent folder for PowerToys.exe. Likely a WinUI3 App SDK application.
-                    fullPath = fullPath + "\\..\\PowerToys.exe";
+                    directoryPath = Path.Combine(directoryPath, "..");
+                    directoryPath = Path.Combine(directoryPath, "PowerToys.exe");
                 }
                 else
                 {
                     // PowerToys.exe is in the same path as the application.
-                    fullPath = fullPath + "\\PowerToys.exe";
+                    directoryPath = Path.Combine(directoryPath, "PowerToys.exe");
                 }
 
-                Process.Start(new ProcessStartInfo(fullPath) { Arguments = "--open-settings=" + SettingsWindowNameToString(window) });
+                Process.Start(new ProcessStartInfo(directoryPath) { Arguments = "--open-settings=" + SettingsWindowNameToString(window) });
             }
             catch
             {

src/common/Common.UI/ThemeManager.cs

@@ -11,7 +11,7 @@ using Microsoft.Win32;
 
 namespace Common.UI
 {
-    public class ThemeManager : IDisposable
+    public partial class ThemeManager : IDisposable
     {
         private readonly Application _app;
         private const string LightTheme = "Light.Accent1";

src/common/GPOWrapper/GPOWrapper.cpp

@@ -184,6 +184,10 @@ namespace winrt::PowerToys::GPOWrapper::implementation
     {
         return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredWorkspacesEnabledValue());
     }
+    GpoRuleConfigured GPOWrapper::GetConfiguredCharacterMapEnabledValue()
+    {
+        return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredCharacterMapEnabledValue());
+    }
     GpoRuleConfigured GPOWrapper::GetConfiguredMwbClipboardSharingEnabledValue()
     {
         return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredMwbClipboardSharingEnabledValue());

src/common/GPOWrapper/GPOWrapper.h

@@ -52,6 +52,7 @@ namespace winrt::PowerToys::GPOWrapper::implementation
         static GpoRuleConfigured GetAllowedAdvancedPasteOnlineAIModelsValue();
         static GpoRuleConfigured GetConfiguredNewPlusEnabledValue();
         static GpoRuleConfigured GetConfiguredWorkspacesEnabledValue();
+        static GpoRuleConfigured GetConfiguredCharacterMapEnabledValue();
         static GpoRuleConfigured GetConfiguredMwbClipboardSharingEnabledValue();
         static GpoRuleConfigured GetConfiguredMwbFileTransferEnabledValue();
         static GpoRuleConfigured GetConfiguredMwbUseOriginalUserInterfaceValue();

src/common/GPOWrapper/GPOWrapper.idl

@@ -56,6 +56,7 @@ namespace PowerToys
             static GpoRuleConfigured GetAllowedAdvancedPasteOnlineAIModelsValue();
             static GpoRuleConfigured GetConfiguredNewPlusEnabledValue();
             static GpoRuleConfigured GetConfiguredWorkspacesEnabledValue();
+            static GpoRuleConfigured GetConfiguredCharacterMapEnabledValue();
             static GpoRuleConfigured GetConfiguredMwbClipboardSharingEnabledValue();
             static GpoRuleConfigured GetConfiguredMwbFileTransferEnabledValue();
             static GpoRuleConfigured GetConfiguredMwbUseOriginalUserInterfaceValue();

src/common/ManagedCommon/LanguageHelper.cs

@@ -6,6 +6,7 @@ using System;
 using System.IO;
 using System.Text.Json;
 using System.Text.Json.Serialization;
+using ManagedCommon.Serialization;
 
 namespace ManagedCommon
 {
@@ -35,7 +36,7 @@ namespace ManagedCommon
                     inputStream.Close();
                     reader.Dispose();
 
-                    return JsonSerializer.Deserialize<OutGoingLanguageSettings>(data).LanguageTag;
+                    return JsonSerializer.Deserialize<OutGoingLanguageSettings>(data, SourceGenerationContext.Default.OutGoingLanguageSettings).LanguageTag;
                 }
                 catch (Exception)
                 {

src/common/ManagedCommon/Logger.cs

@@ -15,15 +15,23 @@ namespace ManagedCommon
 {
     public static class Logger
     {
-        private static readonly Assembly Assembly = Assembly.GetExecutingAssembly();
-        private static readonly string Version = FileVersionInfo.GetVersionInfo(Assembly.Location).ProductVersion;
-
         private static readonly string Error = "Error";
         private static readonly string Warning = "Warning";
         private static readonly string Info = "Info";
         private static readonly string Debug = "Debug";
         private static readonly string TraceFlag = "Trace";
 
+        private static readonly Assembly Assembly = Assembly.GetExecutingAssembly();
+
+        /*
+         * Please pay more attention!
+         * If you want to publish it with Native AOT enabled (or publish as a single file).
+         * You need to find another way to remove Assembly.Location usage.
+         */
+#pragma warning disable IL3000 // Avoid accessing Assembly file path when publishing as a single file
+        private static readonly string Version = FileVersionInfo.GetVersionInfo(Assembly.Location).ProductVersion;
+#pragma warning restore IL3000 // Avoid accessing Assembly file path when publishing as a single file
+
         /// <summary>
         /// Initializes the logger and sets the path for logging.
         /// </summary>
@@ -53,18 +61,16 @@ namespace ManagedCommon
             Trace.AutoFlush = true;
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        public static void LogError(string message)
+        public static void LogError(string message, [System.Runtime.CompilerServices.CallerMemberName] string memberName = "", [System.Runtime.CompilerServices.CallerFilePath] string sourceFilePath = "", [System.Runtime.CompilerServices.CallerLineNumber] int sourceLineNumber = 0)
         {
-            Log(message, Error);
+            Log(message, Error, memberName, sourceFilePath, sourceLineNumber);
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        public static void LogError(string message, Exception ex)
+        public static void LogError(string message, Exception ex, [System.Runtime.CompilerServices.CallerMemberName] string memberName = "", [System.Runtime.CompilerServices.CallerFilePath] string sourceFilePath = "", [System.Runtime.CompilerServices.CallerLineNumber] int sourceLineNumber = 0)
         {
             if (ex == null)
             {
-                Log(message, Error);
+                Log(message, Error, memberName, sourceFilePath, sourceLineNumber);
             }
             else
             {
@@ -83,38 +89,33 @@ namespace ManagedCommon
                     "Stack trace: " + Environment.NewLine +
                     ex.StackTrace;
 
-                Log(exMessage, Error);
+                Log(exMessage, Error, memberName, sourceFilePath, sourceLineNumber);
             }
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        public static void LogWarning(string message)
+        public static void LogWarning(string message, [System.Runtime.CompilerServices.CallerMemberName] string memberName = "", [System.Runtime.CompilerServices.CallerFilePath] string sourceFilePath = "", [System.Runtime.CompilerServices.CallerLineNumber] int sourceLineNumber = 0)
         {
-            Log(message, Warning);
+            Log(message, Warning, memberName, sourceFilePath, sourceLineNumber);
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        public static void LogInfo(string message)
+        public static void LogInfo(string message, [System.Runtime.CompilerServices.CallerMemberName] string memberName = "", [System.Runtime.CompilerServices.CallerFilePath] string sourceFilePath = "", [System.Runtime.CompilerServices.CallerLineNumber] int sourceLineNumber = 0)
         {
-            Log(message, Info);
+            Log(message, Info, memberName, sourceFilePath, sourceLineNumber);
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        public static void LogDebug(string message)
+        public static void LogDebug(string message, [System.Runtime.CompilerServices.CallerMemberName] string memberName = "", [System.Runtime.CompilerServices.CallerFilePath] string sourceFilePath = "", [System.Runtime.CompilerServices.CallerLineNumber] int sourceLineNumber = 0)
         {
-            Log(message, Debug);
+            Log(message, Debug, memberName, sourceFilePath, sourceLineNumber);
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        public static void LogTrace()
+        public static void LogTrace([System.Runtime.CompilerServices.CallerMemberName] string memberName = "", [System.Runtime.CompilerServices.CallerFilePath] string sourceFilePath = "", [System.Runtime.CompilerServices.CallerLineNumber] int sourceLineNumber = 0)
         {
-            Log(string.Empty, TraceFlag);
+            Log(string.Empty, TraceFlag, memberName, sourceFilePath, sourceLineNumber);
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        private static void Log(string message, string type)
+        private static void Log(string message, string type, string memberName, string sourceFilePath, int sourceLineNumber)
         {
-            Trace.WriteLine("[" + DateTime.Now.TimeOfDay + "] [" + type + "] " + GetCallerInfo());
+            Trace.WriteLine("[" + DateTime.Now.TimeOfDay + "] [" + type + "] " + GetCallerInfo(memberName, sourceFilePath, sourceLineNumber));
             Trace.Indent();
             if (message != string.Empty)
             {
@@ -124,49 +125,27 @@ namespace ManagedCommon
             Trace.Unindent();
         }
 
-        [MethodImpl(MethodImplOptions.NoInlining)]
-        private static string GetCallerInfo()
+        private static string GetCallerInfo(string memberName, string sourceFilePath, int sourceLineNumber)
         {
-            StackTrace stackTrace = new();
-
-            var callerMethod = GetCallerMethod(stackTrace);
-
-            return $"{callerMethod?.DeclaringType?.Name}::{callerMethod.Name}";
-        }
-
-        private static MethodBase GetCallerMethod(StackTrace stackTrace)
-        {
-            const int topFrame = 3;
-
-            var topMethod = stackTrace.GetFrame(topFrame)?.GetMethod();
+            string callerFileName = "Unknown";
 
             try
             {
-                if (topMethod?.Name == nameof(IAsyncStateMachine.MoveNext) && typeof(IAsyncStateMachine).IsAssignableFrom(topMethod?.DeclaringType))
+                string fileName = Path.GetFileName(sourceFilePath);
+                if (!string.IsNullOrEmpty(fileName))
                 {
-                    // Async method; return actual method as determined by heuristic:
-                    // "Nearest method on stack to async state-machine's MoveNext() in same namespace but in a different type".
-                    // There are tighter ways of determining the actual method, but this is good enough and probably faster.
-                    for (int deepFrame = topFrame + 1; deepFrame < stackTrace.FrameCount; deepFrame++)
-                    {
-                        var deepMethod = stackTrace.GetFrame(deepFrame)?.GetMethod();
-
-                        if (deepMethod?.DeclaringType != topMethod?.DeclaringType && deepMethod?.DeclaringType?.Namespace == topMethod?.DeclaringType?.Namespace)
-                        {
-                            return deepMethod;
-                        }
-                    }
+                    callerFileName = fileName;
                 }
             }
             catch (Exception)
             {
-                // Ignore exceptions in Release. The code above won't throw, but if it does, we don't want to crash the app.
+                callerFileName = "Unknown";
 #if DEBUG
                 throw;
 #endif
             }
 
-            return topMethod;
+            return $"{callerFileName}::{memberName}::{sourceLineNumber}";
         }
     }
 }

src/common/ManagedCommon/ManagedCommon.csproj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <!-- Look at Directory.Build.props in root for common stuff as well -->
   <Import Project="..\..\Common.Dotnet.CsWinRT.props" />
+  <Import Project="..\..\Common.Dotnet.AotCompatibility.props" />
 
   <PropertyGroup>
     <Description>PowerToys ManagedCommon</Description>

src/common/ManagedCommon/NativeMethods.cs

@@ -53,7 +53,7 @@ namespace ManagedCommon
 
             internal static int Size
             {
-                get { return Marshal.SizeOf(typeof(INPUT)); }
+                get { return Marshal.SizeOf<INPUT>(); }
             }
         }
 

src/common/ManagedCommon/RunnerHelper.cs

@@ -14,12 +14,11 @@ namespace ManagedCommon
 {
     public static class RunnerHelper
     {
-        public static void WaitForPowerToysRunner(int powerToysPID, Action act)
+        public static void WaitForPowerToysRunner(int powerToysPID, Action act, [System.Runtime.CompilerServices.CallerMemberName] string memberName = "")
         {
             var stackTrace = new StackTrace();
             var assembly = Assembly.GetCallingAssembly().GetName();
-            var callingMethod = stackTrace.GetFrame(1).GetMethod().Name;
-            PowerToysTelemetry.Log.WriteEvent(new DebugEvent() { Message = $"[{assembly}][{callingMethod}]WaitForPowerToysRunner waiting for Event powerToysPID={powerToysPID}" });
+            PowerToysTelemetry.Log.WriteEvent(new DebugEvent() { Message = $"[{assembly}][{memberName}]WaitForPowerToysRunner waiting for Event powerToysPID={powerToysPID}" });
             Task.Run(() =>
             {
                 const uint INFINITE = 0xFFFFFFFF;
@@ -29,7 +28,7 @@ namespace ManagedCommon
                 IntPtr powerToysProcHandle = NativeMethods.OpenProcess(SYNCHRONIZE, false, powerToysPID);
                 if (NativeMethods.WaitForSingleObject(powerToysProcHandle, INFINITE) == WAIT_OBJECT_0)
                 {
-                    PowerToysTelemetry.Log.WriteEvent(new DebugEvent() { Message = $"[{assembly}][{callingMethod}]WaitForPowerToysRunner Event Notified powerToysPID={powerToysPID}" });
+                    PowerToysTelemetry.Log.WriteEvent(new DebugEvent() { Message = $"[{assembly}][{memberName}]WaitForPowerToysRunner Event Notified powerToysPID={powerToysPID}" });
                     act.Invoke();
                 }
             });

src/common/ManagedCommon/SerializationContext/SourceGenerationContext.cs

@@ -0,0 +1,13 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Text.Json.Serialization;
+using static ManagedCommon.LanguageHelper;
+
+namespace ManagedCommon.Serialization;
+
+[JsonSerializable(typeof(OutGoingLanguageSettings))]
+internal sealed partial class SourceGenerationContext : JsonSerializerContext
+{
+}

src/common/ManagedCommon/ThemeListener.cs

@@ -14,7 +14,7 @@ namespace ManagedCommon
     /// <param name="sender">Sender ThemeListener</param>
     public delegate void ThemeChangedEvent(ThemeListener sender);
 
-    public class ThemeListener : IDisposable
+    public partial class ThemeListener : IDisposable
     {
         /// <summary>
         /// Gets the App Theme.

src/common/UITestAutomation/Element/Button.cs

@@ -0,0 +1,13 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Represents a button in the UI test environment.
+    /// </summary>
+    public class Button : Element
+    {
+    }
+}

src/common/UITestAutomation/Element/By.cs

@@ -0,0 +1,75 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using static OpenQA.Selenium.By;
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// This class represents a By selector.
+    /// </summary>
+    public class By
+    {
+        private readonly OpenQA.Selenium.By by;
+
+        private By(OpenQA.Selenium.By by)
+        {
+            this.by = by;
+        }
+
+        public override string ToString()
+        {
+            // override ToString to return detailed debugging content provided by OpenQA.Selenium.By
+            return this.by.ToString();
+        }
+
+        /// <summary>
+        /// Creates a By object using the name attribute.
+        /// </summary>
+        /// <param name="name">The name attribute to search for.</param>
+        /// <returns>A By object.</returns>
+        public static By Name(string name) => new By(OpenQA.Selenium.By.Name(name));
+
+        /// <summary>
+        /// Creates a By object using the ID attribute.
+        /// </summary>
+        /// <param name="id">The ID attribute to search for.</param>
+        /// <returns>A By object.</returns>
+        public static By Id(string id) => new By(OpenQA.Selenium.By.Id(id));
+
+        /// <summary>
+        /// Creates a By object using the XPath expression.
+        /// </summary>
+        /// <param name="xpath">The XPath expression to search for.</param>
+        /// <returns>A By object.</returns>
+        public static By XPath(string xpath) => new By(OpenQA.Selenium.By.XPath(xpath));
+
+        /// <summary>
+        /// Creates a By object using the CSS selector.
+        /// </summary>
+        /// <param name="cssSelector">The CSS selector to search for.</param>
+        /// <returns>A By object.</returns>
+        public static By CssSelector(string cssSelector) => new By(OpenQA.Selenium.By.CssSelector(cssSelector));
+
+        /// <summary>
+        /// Creates a By object using the link text.
+        /// </summary>
+        /// <param name="linkText">The link text to search for.</param>
+        /// <returns>A By object.</returns>
+        public static By LinkText(string linkText) => new By(OpenQA.Selenium.By.LinkText(linkText));
+
+        /// <summary>
+        /// Creates a By object using the tag name.
+        /// </summary>
+        /// <param name="tagName">The tag name to search for.</param>
+        /// <returns>A By object.</returns>
+        public static By TagName(string tagName) => new By(OpenQA.Selenium.By.TagName(tagName));
+
+        /// <summary>
+        /// Converts the By object to an OpenQA.Selenium.By object.
+        /// </summary>
+        /// <returns>An OpenQA.Selenium.By object.</returns>
+        internal OpenQA.Selenium.By ToSeleniumBy() => by;
+    }
+}

src/common/UITestAutomation/Element/Element.cs

@@ -0,0 +1,217 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.ObjectModel;
+using System.Runtime.CompilerServices;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using OpenQA.Selenium.Appium;
+using OpenQA.Selenium.Appium.Windows;
+using OpenQA.Selenium.Interactions;
+
+[assembly: InternalsVisibleTo("Session")]
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Represents a basic UI element in the application.
+    /// </summary>
+    public class Element
+    {
+        private WindowsElement? windowsElement;
+
+        private WindowsDriver<WindowsElement>? driver;
+
+        internal void SetWindowsElement(WindowsElement windowsElement) => this.windowsElement = windowsElement;
+
+        internal void SetSession(WindowsDriver<WindowsElement> driver) => this.driver = driver;
+
+        /// <summary>
+        /// Gets the name of the UI element.
+        /// </summary>
+        public string Name
+        {
+            get { return GetAttribute("Name"); }
+        }
+
+        /// <summary>
+        /// Gets the text of the UI element.
+        /// </summary>
+        public string Text
+        {
+            get { return this.windowsElement?.Text ?? string.Empty; }
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether the UI element is Enabled or not.
+        /// </summary>
+        public bool Enabled
+        {
+            get { return this.windowsElement?.Enabled ?? false; }
+        }
+
+        public bool Selected
+        {
+            get { return this.windowsElement?.Selected ?? false; }
+        }
+
+        /// <summary>
+        /// Gets the AutomationID of the UI element.
+        /// </summary>
+        public string AutomationId
+        {
+            get { return GetAttribute("AutomationId"); }
+        }
+
+        /// <summary>
+        /// Gets the class name of the UI element.
+        /// </summary>
+        public string ClassName
+        {
+            get { return GetAttribute("ClassName"); }
+        }
+
+        /// <summary>
+        /// Gets the help text of the UI element.
+        /// </summary>
+        public string HelpText
+        {
+            get { return GetAttribute("HelpText"); }
+        }
+
+        /// <summary>
+        /// Gets the control type of the UI element.
+        /// </summary>
+        public string ControlType
+        {
+            get { return GetAttribute("ControlType"); }
+        }
+
+        /// <summary>
+        /// Click the UI element.
+        /// </summary>
+        /// <param name="rightClick">If true, performs a right-click; otherwise, performs a left-click. Default value is false</param>
+        public void Click(bool rightClick = false)
+        {
+            PerformAction((actions, windowElement) =>
+            {
+                actions.MoveToElement(windowElement);
+
+                // Move 2by2 offset to make click more stable instead of click on the border of the element
+                actions.MoveByOffset(2, 2);
+
+                if (rightClick)
+                {
+                    actions.ContextClick();
+                }
+                else
+                {
+                    actions.Click();
+                }
+
+                actions.Build().Perform();
+            });
+        }
+
+        /// <summary>
+        /// Double Click the UI element.
+        /// </summary>
+        public void DoubleClick()
+        {
+            PerformAction((actions, windowElement) =>
+            {
+                actions.MoveToElement(windowElement);
+
+                // Move 2by2 offset to make click more stable instead of click on the border of the element
+                actions.MoveByOffset(2, 2);
+
+                actions.DoubleClick();
+                actions.Build().Perform();
+            });
+        }
+
+        /// <summary>
+        /// Gets the attribute value of the UI element.
+        /// </summary>
+        /// <param name="attributeName">The name of the attribute to get.</param>
+        /// <returns>The value of the attribute.</returns>
+        public string GetAttribute(string attributeName)
+        {
+            Assert.IsNotNull(this.windowsElement, $"WindowsElement is null in method GetAttribute with parameter: attributeName = {attributeName}");
+            var attributeValue = this.windowsElement.GetAttribute(attributeName);
+            Assert.IsNotNull(attributeValue, $"Attribute '{attributeName}' is null.");
+            return attributeValue;
+        }
+
+        /// <summary>
+        /// Finds an element by the selector.
+        /// </summary>
+        /// <typeparam name="T">The class type of the element to find.</typeparam>
+        /// <param name="by">The selector to use for finding the element.</param>
+        /// <param name="timeoutMS">The timeout in milliseconds.</param>
+        /// <returns>The found element.</returns>
+        public T Find<T>(By by, int timeoutMS = 3000)
+            where T : Element, new()
+        {
+            Assert.IsNotNull(this.windowsElement, $"WindowsElement is null in method Find<{typeof(T).Name}> with parameters: by = {by}, timeoutMS = {timeoutMS}");
+            var foundElement = FindHelper.Find<T, AppiumWebElement>(
+                () =>
+                {
+                    var element = this.windowsElement.FindElement(by.ToSeleniumBy());
+                    Assert.IsNotNull(element, $"Element not found using selector: {by}");
+                    return element;
+                },
+                this.driver,
+                timeoutMS);
+
+            return foundElement;
+        }
+
+        /// <summary>
+        /// Finds all elements by the selector.
+        /// </summary>
+        /// <typeparam name="T">The class type of the elements to find.</typeparam>
+        /// <param name="by">The selector to use for finding the elements.</param>
+        /// <param name="timeoutMS">The timeout in milliseconds.</param>
+        /// <returns>A read-only collection of the found elements.</returns>
+        public ReadOnlyCollection<T>? FindAll<T>(By by, int timeoutMS = 3000)
+            where T : Element, new()
+        {
+            Assert.IsNotNull(this.windowsElement, $"WindowsElement is null in method FindAll<{typeof(T).Name}> with parameters: by = {by}, timeoutMS = {timeoutMS}");
+            var foundElements = FindHelper.FindAll<T, AppiumWebElement>(
+                () =>
+                {
+                    var elements = this.windowsElement.FindElements(by.ToSeleniumBy());
+                    Assert.IsTrue(elements.Count > 0, $"Elements not found using selector: {by}");
+                    return elements;
+                },
+                this.driver,
+                timeoutMS);
+
+            return foundElements;
+        }
+
+        /// <summary>
+        /// Simulates a manual operation on the element.
+        /// </summary>
+        /// <param name="action">The action to perform on the element.</param>
+        /// <param name="msPreAction">The number of milliseconds to wait before the action. Default value is 100 ms</param>
+        /// <param name="msPostAction">The number of milliseconds to wait after the action. Default value is 100 ms</param>
+        protected void PerformAction(Action<Actions, WindowsElement> action, int msPreAction = 100, int msPostAction = 100)
+        {
+            if (msPreAction > 0)
+            {
+                Task.Delay(msPreAction).Wait();
+            }
+
+            var windowElement = this.windowsElement!;
+            Actions actions = new Actions(this.driver);
+            action(actions, windowElement);
+
+            if (msPostAction > 0)
+            {
+                Task.Delay(msPostAction).Wait();
+            }
+        }
+    }
+}

src/common/UITestAutomation/Element/TextBox.cs

@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using OpenQA.Selenium;
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Represents a textbox in the UI test environment.
+    /// </summary>
+    public class TextBox : Element
+    {
+        /// <summary>
+        /// Sets the text of the textbox.
+        /// </summary>
+        /// <param name="value">The text to set.</param>
+        /// <param name="clearText">A value indicating whether to clear the text before setting it. Default value is true</param>
+        /// <returns>The current TextBox instance.</returns>
+        public TextBox SetText(string value, bool clearText = true)
+        {
+            if (clearText)
+            {
+                PerformAction((actions, windowElement) =>
+                {
+                    // select all text and delete it
+                    windowElement.SendKeys(Keys.Control + "a");
+                    windowElement.SendKeys(Keys.Delete);
+                });
+            }
+
+            PerformAction((actions, windowElement) =>
+            {
+                windowElement.SendKeys(value);
+            });
+
+            return this;
+        }
+    }
+}

src/common/UITestAutomation/Element/ToggleSwitch.cs

@@ -0,0 +1,41 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Newtonsoft.Json.Linq;
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Represents a ToggleSwitch in the UI test environment.
+    /// </summary>
+    public class ToggleSwitch : Button
+    {
+        /// <summary>
+        /// Gets a value indicating whether the ToggleSwitch is on.
+        /// </summary>
+        public bool IsOn
+        {
+            get
+            {
+                return this.Selected;
+            }
+        }
+
+        /// <summary>
+        /// Sets the ToggleSwitch to the specified value.
+        /// </summary>
+        /// <param name="value">A value indicating whether the ToggleSwitch should be active. Default is true</param>
+        /// <returns>The current ToggleSwitch instance.</returns>
+        public ToggleSwitch Toggle(bool value = true)
+        {
+            if (this.IsOn != value)
+            {
+                // Toggle the switch
+                this.Click();
+            }
+
+            return this;
+        }
+    }
+}

src/common/UITestAutomation/Element/Window.cs

@@ -0,0 +1,85 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Represents a window in the UI test environment.
+    /// </summary>
+    public class Window : Element
+    {
+        /// <summary>
+        /// Maximizes the window.
+        /// </summary>
+        /// <param name="byClickButton">If true, clicks the Maximize button; otherwise, sets the window state.</param>
+        /// <returns>The current Window instance.</returns>
+        public Window Maximize(bool byClickButton = true)
+        {
+            if (byClickButton)
+            {
+                Find<Button>(By.Name("Maximize")).Click();
+            }
+            else
+            {
+                // TODO: Implement maximizing the window using an alternative method
+            }
+
+            return this;
+        }
+
+        /// <summary>
+        /// Restores the window.
+        /// </summary>
+        /// <param name="byClickButton">If true, clicks the Restore button; otherwise, sets the window state.</param>
+        /// <returns>The current Window instance.</returns>
+        public Window Restore(bool byClickButton = true)
+        {
+            if (byClickButton)
+            {
+                Find<Button>(By.Name("Restore")).Click();
+            }
+            else
+            {
+                // TODO: Implement restoring the window using an alternative method
+            }
+
+            return this;
+        }
+
+        /// <summary>
+        /// Minimizes the window.
+        /// </summary>
+        /// <param name="byClickButton">If true, clicks the Minimize button; otherwise, sets the window state.</param>
+        /// <returns>The current Window instance.</returns>
+        public Window Minimize(bool byClickButton = true)
+        {
+            if (byClickButton)
+            {
+                Find<Button>(By.Name("Minimize")).Click();
+            }
+            else
+            {
+                // TODO: Implement minimizing the window using an alternative method
+            }
+
+            return this;
+        }
+
+        /// <summary>
+        /// Closes the window.
+        /// </summary>
+        /// <param name="byClickButton">If true, clicks the Close button; otherwise, closes the window using an alternative method.</param>
+        public void Close(bool byClickButton = true)
+        {
+            if (byClickButton)
+            {
+                Find<Button>(By.Name("Close")).Click();
+            }
+            else
+            {
+                // TODO: Implement closing the window using an alternative method
+            }
+        }
+    }
+}

src/common/UITestAutomation/FindHelper.cs

@@ -0,0 +1,58 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.ObjectModel;
+using System.Runtime.CompilerServices;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using OpenQA.Selenium.Appium.Windows;
+
+[assembly: InternalsVisibleTo("Element")]
+[assembly: InternalsVisibleTo("Session")]
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Helper class for finding elements.
+    /// </summary>
+    internal static class FindHelper
+    {
+        public static T Find<T, TW>(Func<TW> findElementFunc, WindowsDriver<WindowsElement>? driver, int timeoutMS)
+            where T : Element, new()
+        {
+            var item = findElementFunc() as WindowsElement;
+            return NewElement<T>(item, driver, timeoutMS);
+        }
+
+        public static ReadOnlyCollection<T>? FindAll<T, TW>(Func<ReadOnlyCollection<TW>> findElementsFunc, WindowsDriver<WindowsElement>? driver, int timeoutMS)
+            where T : Element, new()
+        {
+            var items = findElementsFunc();
+            var res = items.Select(item =>
+            {
+                var element = item as WindowsElement;
+                return NewElement<T>(element, driver, timeoutMS);
+            }).ToList();
+
+            return new ReadOnlyCollection<T>(res);
+        }
+
+        public static T NewElement<T>(WindowsElement? element, WindowsDriver<WindowsElement>? driver, int timeoutMS)
+             where T : Element, new()
+        {
+            Assert.IsNotNull(driver, $"New Element {typeof(T).Name} error: driver is null.");
+            Assert.IsNotNull(element, $"New Element {typeof(T).Name} error: element is null.");
+
+            T newElement = new T();
+            if (timeoutMS > 0)
+            {
+                // Only set timeout if it is positive value
+                driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromMilliseconds(timeoutMS);
+            }
+
+            newElement.SetSession(driver);
+            newElement.SetWindowsElement(element);
+            return newElement;
+        }
+    }
+}

src/common/UITestAutomation/ModuleConfigData.cs

@@ -0,0 +1,72 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("UITestBase")]
+[assembly: InternalsVisibleTo("Session")]
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// This file manages the configuration of modules for UI tests.
+    /// </summary>
+    /// <remarks>
+    /// How to add a new module:
+    /// 1. Define the new module in the PowerToysModule enum.
+    /// 2. Add the exe window name to the ModuleWindowName dictionary in the ModuleConfigData constructor.
+    /// 3. Add the exe path to the ModulePath dictionary in the ModuleConfigData constructor.
+    /// </remarks>
+
+    /// <summary>
+    /// Represents the modules in PowerToys.
+    /// </summary>
+    public enum PowerToysModule
+    {
+        PowerToysSettings,
+        FancyZone,
+        Hosts,
+    }
+
+    internal class ModuleConfigData
+    {
+        private Dictionary<PowerToysModule, string> ModulePath { get; }
+
+        // Singleton instance of ModuleConfigData.
+        private static readonly Lazy<ModuleConfigData> SingletonInstance = new Lazy<ModuleConfigData>(() => new ModuleConfigData());
+
+        public static ModuleConfigData Instance => SingletonInstance.Value;
+
+        public const string WindowsApplicationDriverUrl = "http://127.0.0.1:4723";
+
+        public Dictionary<PowerToysModule, string> ModuleWindowName { get; }
+
+        private ModuleConfigData()
+        {
+            // The exe window name for each module.
+            ModuleWindowName = new Dictionary<PowerToysModule, string>
+            {
+                [PowerToysModule.PowerToysSettings] = "PowerToys Settings",
+                [PowerToysModule.FancyZone] = "FancyZones Layout",
+                [PowerToysModule.Hosts] = "Hosts File Editor",
+            };
+
+            // Exe start path for the module if it exists.
+            ModulePath = new Dictionary<PowerToysModule, string>
+            {
+                [PowerToysModule.PowerToysSettings] = @"\..\..\..\WinUI3Apps\PowerToys.Settings.exe",
+                [PowerToysModule.FancyZone] = @"\..\..\..\PowerToys.FancyZonesEditor.exe",
+                [PowerToysModule.Hosts] = @"\..\..\..\WinUI3Apps\PowerToys.Hosts.exe",
+            };
+        }
+
+        public string GetModulePath(PowerToysModule scope) => ModulePath[scope];
+
+        public string GetWindowsApplicationDriverUrl() => WindowsApplicationDriverUrl;
+
+        public string GetModuleWindowName(PowerToysModule scope) => ModuleWindowName[scope];
+    }
+}

src/common/UITestAutomation/Session.cs

@@ -0,0 +1,123 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.ObjectModel;
+using System.Runtime.InteropServices;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using OpenQA.Selenium.Appium;
+using OpenQA.Selenium.Appium.Windows;
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Provides interfaces for interacting with UI elements.
+    /// </summary>
+    public class Session
+    {
+        private WindowsDriver<WindowsElement> Root { get; set; }
+
+        private WindowsDriver<WindowsElement> WindowsDriver { get; set; }
+
+        [DllImport("user32.dll")]
+        private static extern bool SetForegroundWindow(nint hWnd);
+
+        public Session(WindowsDriver<WindowsElement> root, WindowsDriver<WindowsElement> windowsDriver)
+        {
+            this.Root = root;
+            this.WindowsDriver = windowsDriver;
+        }
+
+        /// <summary>
+        /// Finds an element by selector.
+        /// </summary>
+        /// <typeparam name="T">The class of the element, should be Element or its derived class.</typeparam>
+        /// <param name="by">The selector to find the element.</param>
+        /// <param name="timeoutMS">The timeout in milliseconds (default is 3000).</param>
+        /// <returns>The found element.</returns>
+        public T Find<T>(By by, int timeoutMS = 3000)
+            where T : Element, new()
+        {
+            Assert.IsNotNull(this.WindowsDriver, $"WindowsElement is null in method Find<{typeof(T).Name}> with parameters: by = {by}, timeoutMS = {timeoutMS}");
+            var foundElement = FindHelper.Find<T, WindowsElement>(
+                () =>
+                {
+                    var element = this.WindowsDriver.FindElement(by.ToSeleniumBy());
+                    Assert.IsNotNull(element, $"Element not found using selector: {by}");
+                    return element;
+                },
+                this.WindowsDriver,
+                timeoutMS);
+
+            return foundElement;
+        }
+
+        /// <summary>
+        /// Finds all elements by selector.
+        /// </summary>
+        /// <typeparam name="T">The class of the elements, should be Element or its derived class.</typeparam>
+        /// <param name="by">The selector to find the elements.</param>
+        /// <param name="timeoutMS">The timeout in milliseconds (default is 3000).</param>
+        /// <returns>A read-only collection of the found elements.</returns>
+        public ReadOnlyCollection<T> FindAll<T>(By by, int timeoutMS = 3000)
+            where T : Element, new()
+        {
+            Assert.IsNotNull(this.WindowsDriver, $"WindowsElement is null in method FindAll<{typeof(T).Name}> with parameters: by = {by}, timeoutMS = {timeoutMS}");
+            var foundElements = FindHelper.FindAll<T, WindowsElement>(
+                () =>
+                {
+                    var elements = this.WindowsDriver.FindElements(by.ToSeleniumBy());
+                    return elements;
+                },
+                this.WindowsDriver,
+                timeoutMS);
+
+            return foundElements ?? new ReadOnlyCollection<T>(new List<T>());
+        }
+
+        /// <summary>
+        /// Attaches to an existing PowerToys module.
+        /// </summary>
+        /// <param name="module">The PowerToys module to attach to.</param>
+        /// <returns>The attached session.</returns>
+        public Session Attach(PowerToysModule module)
+        {
+            string windowName = ModuleConfigData.Instance.GetModuleWindowName(module);
+            return this.Attach(windowName);
+        }
+
+        /// <summary>
+        /// Attaches to an existing exe by string window name.
+        /// The session should be attached when a new app is started.
+        /// </summary>
+        /// <param name="windowName">The window name to attach to.</param>
+        /// <returns>The attached session.</returns>
+        public Session Attach(string windowName)
+        {
+            if (this.Root != null)
+            {
+                var window = this.Root.FindElementByName(windowName);
+                Assert.IsNotNull(window, $"Failed to attach. Window '{windowName}' not found");
+
+                var windowHandle = new nint(int.Parse(window.GetAttribute("NativeWindowHandle")));
+                SetForegroundWindow(windowHandle);
+                var hexWindowHandle = windowHandle.ToString("x");
+                var appCapabilities = new AppiumOptions();
+
+                appCapabilities.AddAdditionalCapability("appTopLevelWindow", hexWindowHandle);
+                appCapabilities.AddAdditionalCapability("deviceName", "WindowsPC");
+                this.WindowsDriver = new WindowsDriver<WindowsElement>(new Uri(ModuleConfigData.Instance.GetWindowsApplicationDriverUrl()), appCapabilities);
+                Assert.IsNotNull(this.WindowsDriver, "Attach WindowsDriver is null");
+
+                // Set implicit timeout to make element search retry every 500 ms
+                this.WindowsDriver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(3);
+            }
+            else
+            {
+                Assert.IsNotNull(this.Root, $"Failed to attach to the window '{windowName}'. Root driver is null");
+            }
+
+            return this;
+        }
+    }
+}

src/common/UITestAutomation/UITestAutomation.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- Look at Directory.Build.props in root for common stuff as well -->
+  <Import Project="..\..\Common.Dotnet.CsWinRT.props" />
+
+  <PropertyGroup>
+    <OutputType>Library</OutputType>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <PublishAot>true</PublishAot>
+    <InvariantGlobalization>true</InvariantGlobalization>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Appium.WebDriver" />
+    <PackageReference Include="MSTest" />
+    <PackageReference Include="System.IO.Abstractions" />
+  </ItemGroup>
+
+</Project>

src/common/UITestAutomation/UITestBase.cs

@@ -0,0 +1,154 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.ObjectModel;
+using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
+using System.Reflection;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using OpenQA.Selenium.Appium;
+using OpenQA.Selenium.Appium.Windows;
+
+namespace Microsoft.PowerToys.UITest
+{
+    /// <summary>
+    /// Base class that should be inherited by all Test Classes.
+    /// </summary>
+    public class UITestBase
+    {
+        public Session Session { get; set; }
+
+        private readonly TestInit testInit = new TestInit();
+
+        public UITestBase(PowerToysModule scope = PowerToysModule.PowerToysSettings)
+        {
+            this.testInit.SetScope(scope);
+            this.testInit.Init();
+            this.Session = new Session(this.testInit.GetRoot(), this.testInit.GetDriver());
+        }
+
+        ~UITestBase()
+        {
+            this.testInit.Cleanup();
+        }
+
+        /// <summary>
+        /// Finds an element by selector.
+        /// Shortcut for this.Session.Find<T>(by, timeoutMS)
+        /// </summary>
+        /// <typeparam name="T">The class of the element, should be Element or its derived class.</typeparam>
+        /// <param name="by">The selector to find the element.</param>
+        /// <param name="timeoutMS">The timeout in milliseconds (default is 3000).</param>
+        /// <returns>The found element.</returns>
+        protected T Find<T>(By by, int timeoutMS = 3000)
+            where T : Element, new()
+        {
+            return this.Session.Find<T>(by, timeoutMS);
+        }
+
+        /// <summary>
+        /// Finds all elements by selector.
+        /// Shortcut for this.Session.FindAll<T>(by, timeoutMS)
+        /// </summary>
+        /// <typeparam name="T">The class of the elements, should be Element or its derived class.</typeparam>
+        /// <param name="by">The selector to find the elements.</param>
+        /// <param name="timeoutMS">The timeout in milliseconds (default is 3000).</param>
+        /// <returns>A read-only collection of the found elements.</returns>
+        protected ReadOnlyCollection<T> FindAll<T>(By by, int timeoutMS = 3000)
+            where T : Element, new()
+        {
+            return this.Session.FindAll<T>(by, timeoutMS);
+        }
+
+        /// <summary>
+        /// Nested class for test initialization.
+        /// </summary>
+        private sealed class TestInit
+        {
+            private WindowsDriver<WindowsElement> Root { get; set; }
+
+            private WindowsDriver<WindowsElement>? Driver { get; set; }
+
+            private static Process? appDriver;
+
+            // Default session path is PowerToys settings dashboard
+            private static string sessionPath = ModuleConfigData.Instance.GetModulePath(PowerToysModule.PowerToysSettings);
+
+            public TestInit()
+            {
+                appDriver = Process.Start(new ProcessStartInfo
+                {
+                    FileName = "C:\\Program Files (x86)\\Windows Application Driver\\WinAppDriver.exe",
+                    Verb = "runas",
+                });
+
+                var desktopCapabilities = new AppiumOptions();
+                desktopCapabilities.AddAdditionalCapability("app", "Root");
+                this.Root = new WindowsDriver<WindowsElement>(new Uri(ModuleConfigData.Instance.GetWindowsApplicationDriverUrl()), desktopCapabilities);
+
+                // Set default timeout to 5 seconds
+                this.Root.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(5);
+            }
+
+            /// <summary>
+            /// Initializes the test environment.
+            /// </summary>
+            [UnconditionalSuppressMessage("SingleFile", "IL3000:Avoid accessing Assembly file path when publishing as a single file", Justification = "<Pending>")]
+            public void Init()
+            {
+                string? path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
+                this.StartExe(path + sessionPath);
+
+                Assert.IsNotNull(this.Driver, $"Failed to initialize the test environment. Driver is null.");
+
+                // Set default timeout to 5 seconds
+                this.Driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(5);
+            }
+
+            /// <summary>
+            /// Cleans up the test environment.
+            /// </summary>
+            public void Cleanup()
+            {
+                try
+                {
+                    appDriver?.Kill();
+                }
+                catch (Exception ex)
+                {
+                    // Handle exceptions if needed
+                    Debug.WriteLine($"Exception during Cleanup: {ex.Message}");
+                }
+            }
+
+            /// <summary>
+            /// Starts a new exe and takes control of it.
+            /// </summary>
+            /// <param name="appPath">The path to the application executable.</param>
+            public void StartExe(string appPath)
+            {
+                var opts = new AppiumOptions();
+                opts.AddAdditionalCapability("app", appPath);
+                this.Driver = new WindowsDriver<WindowsElement>(new Uri(ModuleConfigData.Instance.GetWindowsApplicationDriverUrl()), opts);
+            }
+
+            /// <summary>
+            /// Sets scope to the Test Class.
+            /// </summary>
+            /// <param name="scope">The PowerToys module to start.</param>
+            public void SetScope(PowerToysModule scope)
+            {
+                sessionPath = ModuleConfigData.Instance.GetModulePath(scope);
+            }
+
+            public WindowsDriver<WindowsElement> GetRoot() => this.Root;
+
+            public WindowsDriver<WindowsElement> GetDriver()
+            {
+                Assert.IsNotNull(this.Driver, $"Failed to get driver. Driver is null.");
+                return this.Driver;
+            }
+        }
+    }
+}

src/common/interop/shared_constants.h

@@ -128,6 +128,9 @@ namespace CommonSharedConstants
     const wchar_t ZOOMIT_REFRESH_SETTINGS_EVENT[] = L"Local\\PowerToysZoomIt-RefreshSettingsEvent-f053a563-d519-4b0d-8152-a54489c13324";
     const wchar_t ZOOMIT_EXIT_EVENT[] = L"Local\\PowerToysZoomIt-ExitEvent-36641ce6-df02-4eac-abea-a3fbf9138220";
 
+    // Path to the events used by CharacterMap
+    const wchar_t CHARACTER_MAP_TRIGGER_EVENT[] = L"Local\\PowerToysCharacterMap-TriggerEvent-4c45960f-1b0f-40b9-85a6-789cf45efde1";
+
     // Max DWORD for key code to disable keys.
     const DWORD VK_DISABLED = 0x100;
 }

src/common/logger/logger_settings.h

@@ -77,6 +77,7 @@ struct LogSettings
     inline const static std::string workspacesSnapshotToolLoggerName = "workspaces-snapshot-tool";
     inline const static std::wstring workspacesSnapshotToolLogPath = L"workspaces-snapshot-tool-log.txt";
     inline const static std::string zoomItLoggerName = "zoom-it";
+    inline const static std::string characterMapLoggerName = "CharacterMap";
     inline const static int retention = 30;
     std::wstring logLevel;
     LogSettings();

src/common/utils/gpo.h

@@ -62,6 +62,7 @@ namespace powertoys_gpo {
     const std::wstring POLICY_CONFIGURE_ENABLED_QOI_THUMBNAILS = L"ConfigureEnabledUtilityFileExplorerQOIThumbnails";
     const std::wstring POLICY_CONFIGURE_ENABLED_NEWPLUS = L"ConfigureEnabledUtilityNewPlus";
     const std::wstring POLICY_CONFIGURE_ENABLED_WORKSPACES = L"ConfigureEnabledUtilityWorkspaces";
+    const std::wstring POLICY_CONFIGURE_ENABLED_CHARACTERMAP = L"ConfigureEnabledUtilityCharacterMap";
 
     // The registry value names for PowerToys installer and update policies.
     const std::wstring POLICY_DISABLE_PER_USER_INSTALLATION = L"PerUserInstallationDisabled";
@@ -455,6 +456,11 @@ namespace powertoys_gpo {
     {
         return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_NEWPLUS);
     }
+
+    inline gpo_rule_configured_t getConfiguredCharacterMapEnabledValue()
+    {
+        return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_CHARACTERMAP);
+    }
 #pragma endregion UtilityEnabledStatePolicies
 
     // Individual module setting policies

src/gpo/assets/PowerToys.admx

@@ -465,6 +465,16 @@
       <disabledValue>
         <decimal value="0" />
       </disabledValue>
+    </policy>
+	<policy name="ConfigureEnabledUtilityCharacterMap" class="Both" displayName="$(string.ConfigureEnabledUtilityCharacterMap)" explainText="$(string.ConfigureEnabledUtilityDescription)" key="Software\Policies\PowerToys" valueName="ConfigureEnabledUtilityCharacterMap">
+      <parentCategory ref="PowerToys" />
+      <supportedOn ref="SUPPORTED_POWERTOYS_0_88_0" />
+      <enabledValue>
+        <decimal value="1" />
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0" />
+      </disabledValue>
     </policy>
     <policy name="DisablePerUserInstallation" class="Machine" displayName="$(string.DisablePerUserInstallation)" explainText="$(string.DisablePerUserInstallationDescription)" key="Software\Policies\PowerToys" valueName="PerUserInstallationDisabled">
       <parentCategory ref="InstallerUpdates" />

src/gpo/assets/en-US/PowerToys.adml

@@ -267,6 +267,7 @@ If you don't configure this policy, the user takes control over the setting and
       <string id="ConfigureEnabledUtilityTextExtractor">Text Extractor: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityVideoConferenceMute">Video Conference Mute: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityZoomIt">Zoom It: Configure enabled state</string>
+	  <string id="ConfigureEnabledUtilityCharacterMap">Character Map: Configure enabled state</string>
       <string id="DisablePerUserInstallation">Disable per-user installation</string>
       <string id="DisableAutomaticUpdateDownload">Disable automatic downloads</string>
       <string id="DoNotShowWhatsNewAfterUpdates">Do not show the release notes after updates</string>

src/modules/AdvancedPaste/AdvancedPaste.UnitTests/Mocks/NoOpKernelQueryCacheService.cs

@@ -2,6 +2,7 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Models.KernelQueryCache;

src/modules/AdvancedPaste/AdvancedPaste.UnitTests/Mocks/NoOpProgress.cs

@@ -0,0 +1,14 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+namespace AdvancedPaste.UnitTests.Mocks;
+
+internal sealed class NoOpProgress : IProgress<double>
+{
+    public void Report(double value)
+    {
+    }
+}

src/modules/AdvancedPaste/AdvancedPaste.UnitTests/ServicesTests/AIServiceBatchIntegrationTests.cs

@@ -8,6 +8,7 @@ using System.IO;
 using System.Linq;
 using System.Text.Json;
 using System.Text.Json.Serialization;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Helpers;
@@ -131,17 +132,18 @@ public sealed class AIServiceBatchIntegrationTests
     {
         VaultCredentialsProvider credentialsProvider = new();
         PromptModerationService promptModerationService = new(credentialsProvider);
+        NoOpProgress progress = new();
         CustomTextTransformService customTextTransformService = new(credentialsProvider, promptModerationService);
 
         switch (format)
         {
             case PasteFormats.CustomTextTransformation:
-                return DataPackageHelpers.CreateFromText(await customTextTransformService.TransformTextAsync(batchTestInput.Prompt, batchTestInput.Clipboard));
+                return DataPackageHelpers.CreateFromText(await customTextTransformService.TransformTextAsync(batchTestInput.Prompt, batchTestInput.Clipboard, CancellationToken.None, progress));
 
             case PasteFormats.KernelQuery:
                 var clipboardData = DataPackageHelpers.CreateFromText(batchTestInput.Clipboard).GetView();
                 KernelService kernelService = new(new NoOpKernelQueryCacheService(), credentialsProvider, promptModerationService, customTextTransformService);
-                return await kernelService.TransformClipboardAsync(batchTestInput.Prompt, clipboardData, isSavedQuery: false);
+                return await kernelService.TransformClipboardAsync(batchTestInput.Prompt, clipboardData, isSavedQuery: false, CancellationToken.None, progress);
 
             default:
                 throw new InvalidOperationException($"Unexpected format {format}");

src/modules/AdvancedPaste/AdvancedPaste.UnitTests/ServicesTests/KernelServiceIntegrationTests.cs

@@ -6,6 +6,7 @@ using System;
 using System.IO;
 using System.Linq;
 using System.Text.RegularExpressions;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Helpers;
@@ -130,7 +131,7 @@ public sealed class KernelServiceIntegrationTests : IDisposable
 
     private async Task<DataPackageView> GetKernelOutputAsync(string prompt, DataPackage input)
     {
-        var output = await _kernelService.TransformClipboardAsync(prompt, input.GetView(), isSavedQuery: false);
+        var output = await _kernelService.TransformClipboardAsync(prompt, input.GetView(), isSavedQuery: false, CancellationToken.None, new NoOpProgress());
 
         Assert.AreEqual(1, _eventListener.SemanticKernelEvents.Count);
         Assert.IsTrue(_eventListener.SemanticKernelTokens > 0);

src/modules/AdvancedPaste/AdvancedPaste.UnitTests/ServicesTests/TranscodeHelperIntegrationTests.cs

@@ -0,0 +1,109 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+using AdvancedPaste.Helpers;
+using AdvancedPaste.Models;
+using AdvancedPaste.UnitTests.Mocks;
+using ManagedCommon;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Windows.Storage;
+using Windows.Storage.FileProperties;
+
+namespace AdvancedPaste.UnitTests.ServicesTests;
+
+[TestClass]
+public sealed class TranscodeHelperIntegrationTests
+{
+    private sealed record class MediaProperties(BasicProperties Basic, MusicProperties Music, VideoProperties Video);
+
+    private const string InputRootFolder = @"%USERPROFILE%\AdvancedPasteTranscodeMediaTestData";
+
+    /// <summary> Tests transforming a folder of media files.
+    /// - Verifies that the output file has the same basic properties (e.g. duration) as the input file.
+    /// - Copies the output file to a subfolder of the input folder for manual inspection.
+    /// </summary>
+    [TestMethod]
+    [DataRow(@"audio", PasteFormats.TranscodeToMp3)]
+    [DataRow(@"video", PasteFormats.TranscodeToMp4)]
+    public async Task TestTransformFolder(string inputSubfolder, PasteFormats format)
+    {
+        var inputFolder = Environment.ExpandEnvironmentVariables(Path.Combine(InputRootFolder, inputSubfolder));
+
+        if (!Directory.Exists(inputFolder))
+        {
+            Assert.Inconclusive($"Skipping tests for {inputFolder} as it does not exist");
+        }
+
+        var outputPath = Path.Combine(inputFolder, $"test_output_{format}");
+
+        foreach (var inputPath in Directory.EnumerateFiles(inputFolder))
+        {
+            await RunTestTransformFileAsync(inputPath, outputPath, format);
+        }
+    }
+
+    private async Task RunTestTransformFileAsync(string inputPath, string finalOutputPath, PasteFormats format)
+    {
+        Logger.LogDebug($"Running {nameof(RunTestTransformFileAsync)} for {inputPath}/{format}");
+
+        Directory.CreateDirectory(finalOutputPath);
+
+        var inputPackage = await DataPackageHelpers.CreateFromFileAsync(inputPath);
+        var inputProperties = await GetPropertiesAsync(await StorageFile.GetFileFromPathAsync(inputPath));
+
+        var outputPackage = await TransformHelpers.TransformAsync(format, inputPackage.GetView(), CancellationToken.None, new NoOpProgress());
+
+        var outputItems = await outputPackage.GetView().GetStorageItemsAsync();
+        Assert.AreEqual(1, outputItems.Count);
+        var outputFile = outputItems.Single() as StorageFile;
+        Assert.IsNotNull(outputFile);
+        var outputProperties = await GetPropertiesAsync(outputFile);
+        AssertPropertiesMatch(format, inputProperties, outputProperties);
+
+        await outputFile.CopyAsync(await StorageFolder.GetFolderFromPathAsync(finalOutputPath), outputFile.Name, NameCollisionOption.ReplaceExisting);
+        await outputPackage.GetView().TryCleanupAfterDelayAsync(TimeSpan.Zero);
+    }
+
+    private static void AssertPropertiesMatch(PasteFormats format, MediaProperties inputProperties, MediaProperties outputProperties)
+    {
+        Assert.IsTrue(outputProperties.Basic.Size > 0);
+
+        Assert.AreEqual(inputProperties.Music.Title, outputProperties.Music.Title);
+        Assert.AreEqual(inputProperties.Music.Album, outputProperties.Music.Album);
+        Assert.AreEqual(inputProperties.Music.Artist, outputProperties.Music.Artist);
+        AssertDurationsApproxEqual(inputProperties.Music.Duration, outputProperties.Music.Duration);
+
+        if (format == PasteFormats.TranscodeToMp4)
+        {
+            Assert.AreEqual(inputProperties.Video.Title, outputProperties.Video.Title);
+            AssertDurationsApproxEqual(inputProperties.Video.Duration, outputProperties.Video.Duration);
+
+            var inputVideoDimensions = GetNormalizedDimensions(inputProperties.Video);
+            if (inputVideoDimensions != null)
+            {
+                Assert.AreEqual(inputVideoDimensions, GetNormalizedDimensions(outputProperties.Video));
+            }
+        }
+    }
+
+    private static async Task<MediaProperties> GetPropertiesAsync(StorageFile file) =>
+        new(await file.GetBasicPropertiesAsync(), await file.Properties.GetMusicPropertiesAsync(), await file.Properties.GetVideoPropertiesAsync());
+
+    private static void AssertDurationsApproxEqual(TimeSpan expected, TimeSpan actual) =>
+        Assert.AreEqual(expected.Ticks, actual.Ticks, delta: TimeSpan.FromSeconds(1).Ticks);
+
+    /// <summary>
+    /// Gets the dimensions of a video, if available. Accounts for the fact that the dimensions may sometimes be swapped.
+    /// </summary>
+    private static (uint Width, uint Height)? GetNormalizedDimensions(VideoProperties properties) =>
+        properties.Width == 0 || properties.Height == 0
+            ? null
+            : (Math.Max(properties.Width, properties.Height), Math.Min(properties.Width, properties.Height));
+}

src/modules/AdvancedPaste/AdvancedPaste/AdvancedPasteXAML/Controls/AnimatedContentControl/AnimatedContentControl.xaml

@@ -28,6 +28,7 @@
                                 Background="Transparent"
                                 BorderThickness="4"
                                 CornerRadius="{TemplateBinding CornerRadius}"
+                                IsHitTestVisible="False"
                                 Visibility="Collapsed">
                                 <!--  CornerRadius needs to be > 0  -->
                                 <Grid.BorderBrush>

src/modules/AdvancedPaste/AdvancedPaste/AdvancedPasteXAML/Controls/PromptBox.xaml

@@ -178,17 +178,36 @@
                                         Padding="0"
                                         HorizontalAlignment="Stretch"
                                         VerticalAlignment="Stretch">
-                                        <Image
-                                            x:Name="AIGlyphImage"
-                                            AutomationProperties.AccessibilityView="Raw"
-                                            Source="/Assets/AdvancedPaste/SemanticKernel.svg"
-                                            Visibility="{Binding DataContext.IsAdvancedAIEnabled, Mode=OneWay, RelativeSource={RelativeSource Mode=TemplatedParent}, Converter={StaticResource BoolToVisibilityConverter}}" />
-                                        <PathIcon
-                                            x:Name="AIGlyph"
-                                            AutomationProperties.AccessibilityView="Raw"
-                                            Data="M128 766q0-42 24-77t65-48l178-57q32-11 61-30t52-42q50-50 71-114l58-179q13-40 48-65t78-26q42 0 77 24t50 65l58 177q21 66 72 117 49 50 117 72l176 58q43 14 69 48t26 80q0 41-25 76t-64 49l-178 58q-66 21-117 72-32 32-51 73t-33 84-26 83-30 73-45 51-71 20q-42 0-77-24t-49-65l-58-178q-8-25-19-47t-28-43q-34-43-77-68t-89-41-89-27-78-29-55-45-21-75zm1149 7q-76-29-145-53t-129-60-104-88-73-138l-57-176-67 176q-18 48-42 89t-60 78q-34 34-76 61t-89 43l-177 57q75 29 144 53t127 60 103 89 73 137l57 176 67-176q37-97 103-168t168-103l177-57zm-125 759q0-31 20-57t49-36l99-32q34-11 53-34t30-51 20-59 20-54 33-41 58-16q32 0 59 19t38 50q6 20 11 40t13 40 17 38 25 34q16 17 39 26t48 18 49 16 44 20 31 32 12 50q0 33-18 60t-51 38q-19 6-39 11t-41 13-39 17-34 25q-24 25-35 62t-24 73-35 61-68 25q-32 0-59-19t-38-50q-6-18-11-39t-13-41-17-40-24-33q-18-17-41-27t-47-17-49-15-43-20-30-33-12-54zm583 4q-43-13-74-30t-55-41-40-55-32-74q-12 41-29 72t-42 55-55 42-71 31q81 23 128 71t71 129q15-43 31-74t40-54 53-40 75-32z"
-                                            Foreground="{ThemeResource TextFillColorSecondaryBrush}"
-                                            Visibility="{Binding DataContext.IsAdvancedAIEnabled, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BoolToInvertedVisibilityConverter}}" />
+                                        <ProgressRing
+                                            Width="30"
+                                            Height="30"
+                                            HorizontalAlignment="Right"
+                                            VerticalAlignment="Center"
+                                            IsActive="{Binding DataContext.IsBusy, Mode=OneWay, RelativeSource={RelativeSource Mode=TemplatedParent}}"
+                                            IsIndeterminate="{Binding DataContext.HasIndeterminateTransformProgress, Mode=OneWay, RelativeSource={RelativeSource Mode=TemplatedParent}}"
+                                            Maximum="100"
+                                            Minimum="0"
+                                            Visibility="{Binding DataContext.IsBusy, Mode=OneWay, RelativeSource={RelativeSource Mode=TemplatedParent}, Converter={StaticResource BoolToVisibilityConverter}}"
+                                            Value="{Binding DataContext.TransformProgress, Mode=OneWay, RelativeSource={RelativeSource Mode=TemplatedParent}}" />
+
+                                        <StackPanel
+                                            Margin="0"
+                                            Padding="0"
+                                            HorizontalAlignment="Stretch"
+                                            VerticalAlignment="Stretch"
+                                            Visibility="{Binding DataContext.IsBusy, Mode=OneWay, RelativeSource={RelativeSource Mode=TemplatedParent}, Converter={StaticResource BoolToInvertedVisibilityConverter}}">
+                                            <Image
+                                                x:Name="AIGlyphImage"
+                                                AutomationProperties.AccessibilityView="Raw"
+                                                Source="/Assets/AdvancedPaste/SemanticKernel.svg"
+                                                Visibility="{Binding DataContext.IsAdvancedAIEnabled, Mode=OneWay, RelativeSource={RelativeSource Mode=TemplatedParent}, Converter={StaticResource BoolToVisibilityConverter}}" />
+                                            <PathIcon
+                                                x:Name="AIGlyph"
+                                                AutomationProperties.AccessibilityView="Raw"
+                                                Data="M128 766q0-42 24-77t65-48l178-57q32-11 61-30t52-42q50-50 71-114l58-179q13-40 48-65t78-26q42 0 77 24t50 65l58 177q21 66 72 117 49 50 117 72l176 58q43 14 69 48t26 80q0 41-25 76t-64 49l-178 58q-66 21-117 72-32 32-51 73t-33 84-26 83-30 73-45 51-71 20q-42 0-77-24t-49-65l-58-178q-8-25-19-47t-28-43q-34-43-77-68t-89-41-89-27-78-29-55-45-21-75zm1149 7q-76-29-145-53t-129-60-104-88-73-138l-57-176-67 176q-18 48-42 89t-60 78q-34 34-76 61t-89 43l-177 57q75 29 144 53t127 60 103 89 73 137l57 176 67-176q37-97 103-168t168-103l177-57zm-125 759q0-31 20-57t49-36l99-32q34-11 53-34t30-51 20-59 20-54 33-41 58-16q32 0 59 19t38 50q6 20 11 40t13 40 17 38 25 34q16 17 39 26t48 18 49 16 44 20 31 32 12 50q0 33-18 60t-51 38q-19 6-39 11t-41 13-39 17-34 25q-24 25-35 62t-24 73-35 61-68 25q-32 0-59-19t-38-50q-6-18-11-39t-13-41-17-40-24-33q-18-17-41-27t-47-17-49-15-43-20-30-33-12-54zm583 4q-43-13-74-30t-55-41-40-55-32-74q-12 41-29 72t-42 55-55 42-71 31q81 23 128 71t71 129q15-43 31-74t40-54 53-40 75-32z"
+                                                Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                                                Visibility="{Binding DataContext.IsAdvancedAIEnabled, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource BoolToInvertedVisibilityConverter}}" />
+                                        </StackPanel>
                                     </StackPanel>
                                 </Viewbox>
                                 <ScrollViewer
@@ -572,6 +591,24 @@
                                 Duration="0:0:0.167" />
                         </animations:Implicit.HideAnimations>
                     </Button>
+                    <Button
+                        x:Name="CancelBtn"
+                        x:Uid="CancelBtnAutomation"
+                        Padding="0"
+                        HorizontalAlignment="Stretch"
+                        VerticalAlignment="Stretch"
+                        ui:VisualExtensions.NormalizedCenterPoint="0.5,0.5"
+                        Command="{x:Bind CancelPasteActionCommand}"
+                        Content="{ui:FontIcon Glyph=&#xE711;,
+                                              FontSize=16}"
+                        Foreground="{ThemeResource AccentTextFillColorPrimaryBrush}"
+                        IsEnabled="False"
+                        Style="{StaticResource SubtleButtonStyle}"
+                        Visibility="Collapsed">
+                        <ToolTipService.ToolTip>
+                            <TextBlock x:Uid="CancelBtnToolTip" TextWrapping="WrapWholeWords" />
+                        </ToolTipService.ToolTip>
+                    </Button>
                     <!--  Transparent overlay to show tooltip  -->
                     <Grid
                         x:Name="SendBtnOverlay"
@@ -679,6 +716,10 @@
                         <Setter Target="Loader.IsLoading" Value="True" />
                         <Setter Target="InputTxtBox.IsEnabled" Value="False" />
                         <Setter Target="SendBtn.IsEnabled" Value="False" />
+                        <Setter Target="SendBtn.Visibility" Value="Collapsed" />
+                        <Setter Target="SendBtnOverlay.Visibility" Value="Collapsed" />
+                        <Setter Target="CancelBtn.IsEnabled" Value="True" />
+                        <Setter Target="CancelBtn.Visibility" Value="Visible" />
                         <Setter Target="DisclaimerPresenter.Visibility" Value="Collapsed" />
                         <Setter Target="LoadingText.Visibility" Value="Visible" />
                     </VisualState.Setters>

src/modules/AdvancedPaste/AdvancedPaste/AdvancedPasteXAML/Controls/PromptBox.xaml.cs

@@ -55,9 +55,9 @@ namespace AdvancedPaste.Controls
 
         private void ViewModel_PropertyChanged(object sender, PropertyChangedEventArgs e)
         {
-            if (e.PropertyName == nameof(ViewModel.Busy) || e.PropertyName == nameof(ViewModel.PasteActionError))
+            if (e.PropertyName is nameof(ViewModel.IsBusy) or nameof(ViewModel.PasteActionError))
             {
-                var state = ViewModel.Busy ? "LoadingState" : ViewModel.PasteActionError.HasText ? "ErrorState" : "DefaultState";
+                var state = ViewModel.IsBusy ? "LoadingState" : ViewModel.PasteActionError.HasText ? "ErrorState" : "DefaultState";
                 VisualStateManager.GoToState(this, state, true);
             }
         }
@@ -78,6 +78,9 @@ namespace AdvancedPaste.Controls
         [RelayCommand]
         private async Task GenerateCustomAIAsync() => await ViewModel.ExecuteCustomAIFormatFromCurrentQueryAsync(PasteActionSource.PromptBox);
 
+        [RelayCommand]
+        private async Task CancelPasteActionAsync() => await ViewModel.CancelPasteActionAsync();
+
         private async void InputTxtBox_KeyDown(object sender, Microsoft.UI.Xaml.Input.KeyRoutedEventArgs e)
         {
             if (e.Key == Windows.System.VirtualKey.Enter && InputTxtBox.Text.Length > 0 && ViewModel.IsCustomAIAvailable)

src/modules/AdvancedPaste/AdvancedPaste/AdvancedPasteXAML/MainWindow.xaml.cs

@@ -24,6 +24,7 @@ namespace AdvancedPaste
     {
         private readonly WindowMessageMonitor _msgMonitor;
         private readonly IUserSettings _userSettings;
+        private readonly OptionsViewModel _optionsViewModel;
 
         private bool _disposedValue;
 
@@ -32,8 +33,7 @@ namespace AdvancedPaste
             InitializeComponent();
 
             _userSettings = App.GetService<IUserSettings>();
-
-            var optionsViewModel = App.GetService<OptionsViewModel>();
+            _optionsViewModel = App.GetService<OptionsViewModel>();
 
             var baseHeight = MinHeight;
             var coreActionCount = PasteFormat.MetadataDict.Values.Count(metadata => metadata.IsCoreAction);
@@ -43,7 +43,7 @@ namespace AdvancedPaste
                 double GetHeight(int maxCustomActionCount) =>
                     baseHeight +
                     new PasteFormatsToHeightConverter().GetHeight(coreActionCount + _userSettings.AdditionalActions.Count) +
-                    new PasteFormatsToHeightConverter() { MaxItems = maxCustomActionCount }.GetHeight(optionsViewModel.IsCustomAIServiceEnabled ? _userSettings.CustomActions.Count : 0);
+                    new PasteFormatsToHeightConverter() { MaxItems = maxCustomActionCount }.GetHeight(_optionsViewModel.IsCustomAIServiceEnabled ? _userSettings.CustomActions.Count : 0);
 
                 MinHeight = GetHeight(1);
                 Height = GetHeight(5);
@@ -52,9 +52,9 @@ namespace AdvancedPaste
             UpdateHeight();
 
             _userSettings.Changed += (_, _) => UpdateHeight();
-            optionsViewModel.PropertyChanged += (_, e) =>
+            _optionsViewModel.PropertyChanged += (_, e) =>
             {
-                if (e.PropertyName == nameof(optionsViewModel.IsCustomAIServiceEnabled))
+                if (e.PropertyName == nameof(_optionsViewModel.IsCustomAIServiceEnabled))
                 {
                     UpdateHeight();
                 }
@@ -111,8 +111,9 @@ namespace AdvancedPaste
             GC.SuppressFinalize(this);
         }
 
-        private void WindowEx_Closed(object sender, Microsoft.UI.Xaml.WindowEventArgs args)
+        private async void WindowEx_Closed(object sender, Microsoft.UI.Xaml.WindowEventArgs args)
         {
+            await _optionsViewModel.CancelPasteActionAsync();
             Hide();
             args.Handled = true;
         }

src/modules/AdvancedPaste/AdvancedPaste/Helpers/DataPackageHelpers.cs

@@ -4,10 +4,14 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Models;
+using ManagedCommon;
+using Microsoft.Win32;
 using Windows.ApplicationModel.DataTransfer;
 using Windows.Data.Html;
 using Windows.Graphics.Imaging;
@@ -18,8 +22,6 @@ namespace AdvancedPaste.Helpers;
 
 internal static class DataPackageHelpers
 {
-    private static readonly Lazy<HashSet<string>> ImageFileTypes = new(GetImageFileTypes());
-
     private static readonly (string DataFormat, ClipboardFormat ClipboardFormat)[] DataFormats =
     [
         (StandardDataFormats.Text, ClipboardFormat.Text),
@@ -27,6 +29,14 @@ internal static class DataPackageHelpers
         (StandardDataFormats.Bitmap, ClipboardFormat.Image),
     ];
 
+    private static readonly Lazy<(ClipboardFormat Format, HashSet<string> FileTypes)[]> SupportedFileTypes =
+        new(() =>
+        [
+            (ClipboardFormat.Image, GetImageFileTypes()),
+            (ClipboardFormat.Audio, GetMediaFileTypes("audio")),
+            (ClipboardFormat.Video, GetMediaFileTypes("video")),
+        ]);
+
     internal static DataPackage CreateFromText(string text)
     {
         DataPackage dataPackage = new();
@@ -57,9 +67,12 @@ internal static class DataPackageHelpers
             {
                 availableFormats |= ClipboardFormat.File;
 
-                if (ImageFileTypes.Value.Contains(file.FileType))
+                foreach (var (format, fileTypes) in SupportedFileTypes.Value)
                 {
-                    availableFormats |= ClipboardFormat.Image;
+                    if (fileTypes.Contains(file.FileType))
+                    {
+                        availableFormats |= format;
+                    }
                 }
             }
         }
@@ -93,6 +106,60 @@ internal static class DataPackageHelpers
         return availableFormats == ClipboardFormat.Text ? !string.IsNullOrEmpty(await dataPackageView.GetTextAsync()) : availableFormats != ClipboardFormat.None;
     }
 
+    internal static async Task TryCleanupAfterDelayAsync(this DataPackageView dataPackageView, TimeSpan delay)
+    {
+        try
+        {
+            var tempFile = await GetSingleTempFileOrNullAsync(dataPackageView);
+
+            if (tempFile != null)
+            {
+                await Task.Delay(delay);
+
+                Logger.LogDebug($"Cleaning up temporary file with extension [{tempFile.Extension}] from data package after delay");
+
+                tempFile.Delete();
+                if (NormalizeDirectoryPath(tempFile.Directory?.Parent?.FullName) == NormalizeDirectoryPath(Path.GetTempPath()))
+                {
+                    tempFile.Directory?.Delete();
+                }
+            }
+        }
+        catch (Exception ex)
+        {
+            Logger.LogError("Failed to clean up temporary files", ex);
+        }
+    }
+
+    private static async Task<FileInfo> GetSingleTempFileOrNullAsync(this DataPackageView dataPackageView)
+    {
+        if (!dataPackageView.Contains(StandardDataFormats.StorageItems))
+        {
+            return null;
+        }
+
+        var storageItems = await dataPackageView.GetStorageItemsAsync();
+
+        if (storageItems.Count != 1 || storageItems.Single() is not StorageFile file)
+        {
+            return null;
+        }
+
+        FileInfo fileInfo = new(file.Path);
+        var tempPathDirectory = NormalizeDirectoryPath(Path.GetTempPath());
+
+        var directoryPaths = new[] { fileInfo.Directory, fileInfo.Directory?.Parent }
+                            .Where(directory => directory != null)
+                            .Select(directory => NormalizeDirectoryPath(directory.FullName));
+
+        return directoryPaths.Contains(NormalizeDirectoryPath(Path.GetTempPath())) ? fileInfo : null;
+    }
+
+    private static string NormalizeDirectoryPath(string path) =>
+        Path.GetFullPath(new Uri(path).LocalPath)
+            .TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar)
+            .ToUpperInvariant();
+
     internal static async Task<string> GetTextOrEmptyAsync(this DataPackageView dataPackageView) =>
         dataPackageView.Contains(StandardDataFormats.Text) ? await dataPackageView.GetTextAsync() : string.Empty;
 
@@ -153,4 +220,27 @@ internal static class DataPackageHelpers
                BitmapDecoder.GetDecoderInformationEnumerator()
                             .SelectMany(di => di.FileExtensions)
                             .ToHashSet(StringComparer.InvariantCultureIgnoreCase);
+
+    private static HashSet<string> GetMediaFileTypes(string mediaKind)
+    {
+        static string AssocQueryString(NativeMethods.AssocStr assocStr, string extension)
+        {
+            uint pcchOut = 0;
+
+            NativeMethods.AssocQueryString(NativeMethods.AssocF.None, assocStr, extension, null, null, ref pcchOut);
+
+            StringBuilder pszOut = new((int)pcchOut);
+            var hResult = NativeMethods.AssocQueryString(NativeMethods.AssocF.None, assocStr, extension, null, pszOut, ref pcchOut);
+            return hResult == NativeMethods.HResult.Ok ? pszOut.ToString() : string.Empty;
+        }
+
+        var comparison = StringComparison.OrdinalIgnoreCase;
+        var extensions = from extension in Registry.ClassesRoot.GetSubKeyNames()
+                         where extension.StartsWith('.')
+                         where AssocQueryString(NativeMethods.AssocStr.PerceivedType, extension).Equals(mediaKind, comparison) ||
+                               AssocQueryString(NativeMethods.AssocStr.ContentType, extension).StartsWith($"{mediaKind}/", comparison)
+                         select extension;
+
+        return extensions.ToHashSet(StringComparer.InvariantCultureIgnoreCase);
+    }
 }

src/modules/AdvancedPaste/AdvancedPaste/Helpers/KernelExtensions.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Models;
@@ -17,6 +18,8 @@ internal static class KernelExtensions
     private const string DataPackageKey = "DataPackage";
     private const string LastErrorKey = "LastError";
     private const string ActionChainKey = "ActionChain";
+    private const string CancellationTokenKey = "CancellationToken";
+    private const string ProgressKey = "Progress";
 
     internal static DataPackageView GetDataPackageView(this Kernel kernel)
     {
@@ -40,6 +43,14 @@ internal static class KernelExtensions
 
     internal static void SetDataPackageView(this Kernel kernel, DataPackageView dataPackageView) => kernel.Data[DataPackageKey] = dataPackageView;
 
+    internal static CancellationToken GetCancellationToken(this Kernel kernel) => kernel.Data.TryGetValue(CancellationTokenKey, out object value) ? (CancellationToken)value : CancellationToken.None;
+
+    internal static void SetCancellationToken(this Kernel kernel, CancellationToken cancellationToken) => kernel.Data[CancellationTokenKey] = cancellationToken;
+
+    internal static IProgress<double> GetProgress(this Kernel kernel) => kernel.Data.TryGetValue(ProgressKey, out object obj) ? obj as IProgress<double> : null;
+
+    internal static void SetProgress(this Kernel kernel, IProgress<double> progress) => kernel.Data[ProgressKey] = progress;
+
     internal static Exception GetLastError(this Kernel kernel) => kernel.Data.TryGetValue(LastErrorKey, out object obj) ? obj as Exception : null;
 
     internal static void SetLastError(this Kernel kernel, Exception error) => kernel.Data[LastErrorKey] = error;

src/modules/AdvancedPaste/AdvancedPaste/Helpers/NativeMethods.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.Runtime.InteropServices;
+using System.Text;
 
 namespace AdvancedPaste.Helpers
 {
@@ -83,6 +84,68 @@ namespace AdvancedPaste.Helpers
             Scancode = 0x0008,
         }
 
+        public enum HResult
+        {
+            Ok = 0x0000,
+            False = 0x0001,
+            InvalidArguments = unchecked((int)0x80070057),
+            OutOfMemory = unchecked((int)0x8007000E),
+            NoInterface = unchecked((int)0x80004002),
+            Fail = unchecked((int)0x80004005),
+            ExtractionFailed = unchecked((int)0x8004B200),
+            ElementNotFound = unchecked((int)0x80070490),
+            TypeElementNotFound = unchecked((int)0x8002802B),
+            NoObject = unchecked((int)0x800401E5),
+            Win32ErrorCanceled = 1223,
+            Canceled = unchecked((int)0x800704C7),
+            ResourceInUse = unchecked((int)0x800700AA),
+            AccessDenied = unchecked((int)0x80030005),
+        }
+
+        [Flags]
+        public enum AssocF
+        {
+            None = 0,
+            Init_NoRemapCLSID = 0x1,
+            Init_ByExeName = 0x2,
+            Open_ByExeName = 0x3,
+            Init_DefaultToStar = 0x4,
+            Init_DefaultToFolder = 0x8,
+            NoUserSettings = 0x10,
+            NoTruncate = 0x20,
+            Verify = 0x40,
+            RemapRunDll = 0x80,
+            NoFixUps = 0x100,
+            IgnoreBaseClass = 0x200,
+        }
+
+        public enum AssocStr
+        {
+            Command = 1,
+            Executable,
+            FriendlyDocName,
+            FriendlyAppName,
+            NoOpen,
+            ShellNewValue,
+            DDECommand,
+            DDEIfExec,
+            DDEApplication,
+            DDETopic,
+            InfoTip,
+            QuickTip,
+            TileInfo,
+            ContentType,
+            DefaultIcon,
+            ShellExtension,
+            PerceivedType,
+            DelegateExecute,
+            SupportedUriProtocols,
+            ProgId,
+            AppId,
+            AppPublisher,
+            AppIconReference,
+        }
+
         [DllImport("user32.dll")]
         internal static extern uint SendInput(uint nInputs, INPUT[] pInputs, int cbSize);
 
@@ -100,5 +163,8 @@ namespace AdvancedPaste.Helpers
 
         [DllImport("user32.dll")]
         internal static extern bool GetCursorPos(out PointInter lpPoint);
+
+        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Unicode)]
+        internal static extern HResult AssocQueryString(AssocF flags, AssocStr str, string pszAssoc, string pszExtra, [Out] StringBuilder pszOut, [In][Out] ref uint pcchOut);
     }
 }

src/modules/AdvancedPaste/AdvancedPaste/Helpers/OcrHelpers.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.Linq;
+using System.Threading;
 using System.Threading.Tasks;
 
 using Windows.Globalization;
@@ -15,11 +16,14 @@ namespace AdvancedPaste.Helpers;
 
 public static class OcrHelpers
 {
-    public static async Task<string> ExtractTextAsync(SoftwareBitmap bitmap)
+    public static async Task<string> ExtractTextAsync(SoftwareBitmap bitmap, CancellationToken cancellationToken)
     {
         var ocrLanguage = GetOCRLanguage() ?? throw new InvalidOperationException("Unable to determine OCR language");
+        cancellationToken.ThrowIfCancellationRequested();
 
         var ocrEngine = OcrEngine.TryCreateFromLanguage(ocrLanguage) ?? throw new InvalidOperationException("Unable to create OCR engine");
+        cancellationToken.ThrowIfCancellationRequested();
+
         var ocrResult = await ocrEngine.RecognizeAsync(bitmap);
 
         return string.IsNullOrWhiteSpace(ocrResult.Text)

src/modules/AdvancedPaste/AdvancedPaste/Helpers/TranscodeHelpers.cs

@@ -0,0 +1,167 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+using AdvancedPaste.Models;
+using ManagedCommon;
+using Windows.ApplicationModel.DataTransfer;
+using Windows.Media.MediaProperties;
+using Windows.Media.Transcoding;
+using Windows.Storage;
+
+namespace AdvancedPaste.Helpers;
+
+internal static class TranscodeHelpers
+{
+    public static async Task<DataPackage> TranscodeToMp3Async(DataPackageView clipboardData, CancellationToken cancellationToken, IProgress<double> progress) =>
+        await TranscodeMediaAsync(clipboardData, MediaEncodingProfile.CreateMp3(AudioEncodingQuality.High), ".mp3", cancellationToken, progress);
+
+    public static async Task<DataPackage> TranscodeToMp4Async(DataPackageView clipboardData, CancellationToken cancellationToken, IProgress<double> progress) =>
+        await TranscodeMediaAsync(clipboardData, MediaEncodingProfile.CreateMp4(VideoEncodingQuality.HD1080p), ".mp4", cancellationToken, progress);
+
+    private static async Task<DataPackage> TranscodeMediaAsync(DataPackageView clipboardData, MediaEncodingProfile baseOutputProfile, string extension, CancellationToken cancellationToken, IProgress<double> progress)
+    {
+        Logger.LogTrace();
+
+        var inputFiles = await clipboardData.GetStorageItemsAsync();
+
+        if (inputFiles.Count != 1)
+        {
+            throw new InvalidOperationException($"{nameof(TranscodeMediaAsync)} does not support multiple files");
+        }
+
+        var inputFile = inputFiles.Single() as StorageFile ?? throw new InvalidOperationException($"{nameof(TranscodeMediaAsync)} only supports files");
+        var inputFileNameWithoutExtension = Path.GetFileNameWithoutExtension(inputFile.Path);
+
+        var inputProfile = await MediaEncodingProfile.CreateFromFileAsync(inputFile);
+        var outputProfile = CreateOutputProfile(inputProfile, baseOutputProfile);
+
+#if DEBUG
+        static string ProfileToString(MediaEncodingProfile profile) => System.Text.Json.JsonSerializer.Serialize(profile, options: new() { WriteIndented = true });
+        Logger.LogDebug($"{nameof(inputProfile)}: {ProfileToString(inputProfile)}");
+        Logger.LogDebug($"{nameof(outputProfile)}: {ProfileToString(outputProfile)}");
+#endif
+
+        var outputFolder = await Task.Run(() => Directory.CreateTempSubdirectory("PowerToys_AdvancedPaste_"), cancellationToken);
+        var outputFileName = StringComparer.OrdinalIgnoreCase.Equals(Path.GetExtension(inputFile.Path), extension) ? inputFileNameWithoutExtension + "_1" : inputFileNameWithoutExtension;
+        var outputFilePath = Path.Combine(outputFolder.FullName, Path.ChangeExtension(outputFileName, extension));
+        await File.WriteAllBytesAsync(outputFilePath, [], cancellationToken); // TranscodeAsync seems to require the output file to exist
+
+        await TranscodeMediaAsync(inputFile, await StorageFile.GetFileFromPathAsync(outputFilePath), outputProfile, cancellationToken, progress);
+
+        return await DataPackageHelpers.CreateFromFileAsync(outputFilePath);
+    }
+
+    private static MediaEncodingProfile CreateOutputProfile(MediaEncodingProfile inputProfile, MediaEncodingProfile baseOutputProfile)
+    {
+        MediaEncodingProfile outputProfile = new()
+        {
+            Video = null,
+            Audio = null,
+        };
+
+        outputProfile.Container = baseOutputProfile.Container.Copy();
+
+        if (inputProfile.Video != null && baseOutputProfile.Video != null)
+        {
+            outputProfile.Video = baseOutputProfile.Video.Copy();
+
+            if (inputProfile.Video.Bitrate != 0)
+            {
+                outputProfile.Video.Bitrate = inputProfile.Video.Bitrate;
+            }
+
+            if (inputProfile.Video.FrameRate.Numerator != 0)
+            {
+                outputProfile.Video.FrameRate.Numerator = inputProfile.Video.FrameRate.Numerator;
+            }
+
+            if (inputProfile.Video.FrameRate.Denominator != 0)
+            {
+                outputProfile.Video.FrameRate.Denominator = inputProfile.Video.FrameRate.Denominator;
+            }
+
+            if (inputProfile.Video.PixelAspectRatio.Numerator != 0)
+            {
+                outputProfile.Video.PixelAspectRatio.Numerator = inputProfile.Video.PixelAspectRatio.Numerator;
+            }
+
+            if (inputProfile.Video.PixelAspectRatio.Denominator != 0)
+            {
+                outputProfile.Video.PixelAspectRatio.Denominator = inputProfile.Video.PixelAspectRatio.Denominator;
+            }
+
+            outputProfile.Video.Width = inputProfile.Video.Width;
+            outputProfile.Video.Height = inputProfile.Video.Height;
+        }
+
+        if (inputProfile.Audio != null && baseOutputProfile.Audio != null)
+        {
+            outputProfile.Audio = baseOutputProfile.Audio.Copy();
+
+            if (inputProfile.Audio.Bitrate != 0)
+            {
+                outputProfile.Audio.Bitrate = inputProfile.Audio.Bitrate;
+            }
+
+            if (inputProfile.Audio.BitsPerSample != 0)
+            {
+                outputProfile.Audio.BitsPerSample = inputProfile.Audio.BitsPerSample;
+            }
+
+            if (inputProfile.Audio.ChannelCount != 0)
+            {
+                outputProfile.Audio.ChannelCount = inputProfile.Audio.ChannelCount;
+            }
+
+            if (inputProfile.Audio.SampleRate != 0)
+            {
+                outputProfile.Audio.SampleRate = inputProfile.Audio.SampleRate;
+            }
+        }
+
+        return outputProfile;
+    }
+
+    private static async Task TranscodeMediaAsync(StorageFile inputFile, StorageFile outputFile, MediaEncodingProfile outputProfile, CancellationToken cancellationToken, IProgress<double> progress)
+    {
+        if (outputProfile.Video == null && outputProfile.Audio == null)
+        {
+            throw new InvalidOperationException("Target profile does not contain media");
+        }
+
+        async Task<PrepareTranscodeResult> GetPrepareResult(bool hardwareAccelerationEnabled)
+        {
+            MediaTranscoder transcoder = new()
+            {
+                AlwaysReencode = false,
+                HardwareAccelerationEnabled = hardwareAccelerationEnabled,
+            };
+
+            return await transcoder.PrepareFileTranscodeAsync(inputFile, outputFile, outputProfile);
+        }
+
+        var prepareResult = await GetPrepareResult(hardwareAccelerationEnabled: true);
+
+        if (!prepareResult.CanTranscode)
+        {
+            Logger.LogWarning($"Unable to transcode with hardware acceleration enabled, falling back to software; {nameof(prepareResult.FailureReason)}={prepareResult.FailureReason}");
+
+            prepareResult = await GetPrepareResult(hardwareAccelerationEnabled: false);
+        }
+
+        if (!prepareResult.CanTranscode)
+        {
+            var message = ResourceLoaderInstance.ResourceLoader.GetString(prepareResult.FailureReason == TranscodeFailureReason.CodecNotFound ? "TranscodeErrorUnsupportedCodec" : "TranscodeErrorGeneral");
+            throw new PasteActionException(message, new InvalidOperationException($"Error transcoding; {nameof(prepareResult.FailureReason)}={prepareResult.FailureReason}"));
+        }
+
+        await prepareResult.TranscodeAsync().AsTask(cancellationToken, progress);
+    }
+}

src/modules/AdvancedPaste/AdvancedPaste/Helpers/TransformHelpers.cs

@@ -5,6 +5,7 @@
 using System;
 using System.Globalization;
 using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Models;
@@ -17,17 +18,19 @@ namespace AdvancedPaste.Helpers;
 
 public static class TransformHelpers
 {
-    public static async Task<DataPackage> TransformAsync(PasteFormats format, DataPackageView clipboardData)
+    public static async Task<DataPackage> TransformAsync(PasteFormats format, DataPackageView clipboardData, CancellationToken cancellationToken, IProgress<double> progress)
     {
         return format switch
         {
             PasteFormats.PlainText => await ToPlainTextAsync(clipboardData),
             PasteFormats.Markdown => await ToMarkdownAsync(clipboardData),
             PasteFormats.Json => await ToJsonAsync(clipboardData),
-            PasteFormats.ImageToText => await ImageToTextAsync(clipboardData),
-            PasteFormats.PasteAsTxtFile => await ToTxtFileAsync(clipboardData),
-            PasteFormats.PasteAsPngFile => await ToPngFileAsync(clipboardData),
-            PasteFormats.PasteAsHtmlFile => await ToHtmlFileAsync(clipboardData),
+            PasteFormats.ImageToText => await ImageToTextAsync(clipboardData, cancellationToken),
+            PasteFormats.PasteAsTxtFile => await ToTxtFileAsync(clipboardData, cancellationToken),
+            PasteFormats.PasteAsPngFile => await ToPngFileAsync(clipboardData, cancellationToken),
+            PasteFormats.PasteAsHtmlFile => await ToHtmlFileAsync(clipboardData, cancellationToken),
+            PasteFormats.TranscodeToMp3 => await TranscodeHelpers.TranscodeToMp3Async(clipboardData, cancellationToken, progress),
+            PasteFormats.TranscodeToMp4 => await TranscodeHelpers.TranscodeToMp4Async(clipboardData, cancellationToken, progress),
             PasteFormats.KernelQuery => throw new ArgumentException($"Unsupported format {format}", nameof(format)),
             PasteFormats.CustomTextTransformation => throw new ArgumentException($"Unsupported format {format}", nameof(format)),
             _ => throw new ArgumentException($"Unknown value {format}", nameof(format)),
@@ -52,16 +55,16 @@ public static class TransformHelpers
         return CreateDataPackageFromText(await JsonHelper.ToJsonFromXmlOrCsvAsync(clipboardData));
     }
 
-    private static async Task<DataPackage> ImageToTextAsync(DataPackageView clipboardData)
+    private static async Task<DataPackage> ImageToTextAsync(DataPackageView clipboardData, CancellationToken cancellationToken)
     {
         Logger.LogTrace();
 
         var bitmap = await clipboardData.GetImageContentAsync() ?? throw new ArgumentException("No image content found in clipboard", nameof(clipboardData));
-        var text = await OcrHelpers.ExtractTextAsync(bitmap);
+        var text = await OcrHelpers.ExtractTextAsync(bitmap, cancellationToken);
         return CreateDataPackageFromText(text);
     }
 
-    private static async Task<DataPackage> ToPngFileAsync(DataPackageView clipboardData)
+    private static async Task<DataPackage> ToPngFileAsync(DataPackageView clipboardData, CancellationToken cancellationToken)
     {
         Logger.LogTrace();
 
@@ -72,25 +75,25 @@ public static class TransformHelpers
         encoder.SetSoftwareBitmap(clipboardBitmap);
         await encoder.FlushAsync();
 
-        return await CreateDataPackageFromFileContentAsync(pngStream.AsStreamForRead(), "png");
+        return await CreateDataPackageFromFileContentAsync(pngStream.AsStreamForRead(), "png", cancellationToken);
     }
 
-    private static async Task<DataPackage> ToTxtFileAsync(DataPackageView clipboardData)
+    private static async Task<DataPackage> ToTxtFileAsync(DataPackageView clipboardData, CancellationToken cancellationToken)
     {
         Logger.LogTrace();
 
         var text = await clipboardData.GetTextOrHtmlTextAsync();
-        return await CreateDataPackageFromFileContentAsync(text, "txt");
+        return await CreateDataPackageFromFileContentAsync(text, "txt", cancellationToken);
     }
 
-    private static async Task<DataPackage> ToHtmlFileAsync(DataPackageView clipboardData)
+    private static async Task<DataPackage> ToHtmlFileAsync(DataPackageView clipboardData, CancellationToken cancellationToken)
     {
         Logger.LogTrace();
 
         var cfHtml = await clipboardData.GetHtmlContentAsync();
         var html = RemoveHtmlMetadata(cfHtml);
 
-        return await CreateDataPackageFromFileContentAsync(html, "html");
+        return await CreateDataPackageFromFileContentAsync(html, "html", cancellationToken);
     }
 
     /// <summary>
@@ -114,7 +117,7 @@ public static class TransformHelpers
         return (startFragmentIndex == null || endFragmentIndex == null) ? cfHtml : cfHtml[startFragmentIndex.Value..endFragmentIndex.Value];
     }
 
-    private static async Task<DataPackage> CreateDataPackageFromFileContentAsync(string data, string fileExtension)
+    private static async Task<DataPackage> CreateDataPackageFromFileContentAsync(string data, string fileExtension, CancellationToken cancellationToken)
     {
         if (string.IsNullOrEmpty(data))
         {
@@ -123,16 +126,16 @@ public static class TransformHelpers
 
         var path = GetPasteAsFileTempFilePath(fileExtension);
 
-        await File.WriteAllTextAsync(path, data);
+        await File.WriteAllTextAsync(path, data, cancellationToken);
         return await DataPackageHelpers.CreateFromFileAsync(path);
     }
 
-    private static async Task<DataPackage> CreateDataPackageFromFileContentAsync(Stream stream, string fileExtension)
+    private static async Task<DataPackage> CreateDataPackageFromFileContentAsync(Stream stream, string fileExtension, CancellationToken cancellationToken)
     {
         var path = GetPasteAsFileTempFilePath(fileExtension);
 
         using var fileStream = File.Create(path);
-        await stream.CopyToAsync(fileStream);
+        await stream.CopyToAsync(fileStream, cancellationToken);
 
         return await DataPackageHelpers.CreateFromFileAsync(path);
     }

src/modules/AdvancedPaste/AdvancedPaste/Helpers/UserSettings.cs

@@ -108,7 +108,9 @@ namespace AdvancedPaste.Settings
                                     (PasteFormats.ImageToText, [sourceAdditionalActions.ImageToText]),
                                     (PasteFormats.PasteAsTxtFile, [sourceAdditionalActions.PasteAsFile, sourceAdditionalActions.PasteAsFile.PasteAsTxtFile]),
                                     (PasteFormats.PasteAsPngFile, [sourceAdditionalActions.PasteAsFile, sourceAdditionalActions.PasteAsFile.PasteAsPngFile]),
-                                    (PasteFormats.PasteAsHtmlFile, [sourceAdditionalActions.PasteAsFile, sourceAdditionalActions.PasteAsFile.PasteAsHtmlFile])
+                                    (PasteFormats.PasteAsHtmlFile, [sourceAdditionalActions.PasteAsFile, sourceAdditionalActions.PasteAsFile.PasteAsHtmlFile]),
+                                    (PasteFormats.TranscodeToMp3, [sourceAdditionalActions.Transcode, sourceAdditionalActions.Transcode.TranscodeToMp3]),
+                                    (PasteFormats.TranscodeToMp4, [sourceAdditionalActions.Transcode, sourceAdditionalActions.Transcode.TranscodeToMp4]),
                                 ];
 
                                 _additionalActions.Clear();

src/modules/AdvancedPaste/AdvancedPaste/Models/ClipboardFormat.cs

@@ -13,6 +13,7 @@ public enum ClipboardFormat
     Text = 1 << 0,
     Html = 1 << 1,
     Audio = 1 << 2,
-    Image = 1 << 3,
-    File = 1 << 4, // output only for now
+    Video = 1 << 3,
+    Image = 1 << 4,
+    File = 1 << 5, // output only for now
 }

src/modules/AdvancedPaste/AdvancedPaste/Models/PasteActionError.cs

@@ -30,7 +30,7 @@ public sealed class PasteActionError
     public static PasteActionError FromException(Exception ex) =>
         new()
         {
-            Text = ex is PasteActionException ? ex.Message : ResourceLoaderInstance.ResourceLoader.GetString("PasteError"),
+            Text = ex is PasteActionException ? ex.Message : ResourceLoaderInstance.ResourceLoader.GetString(ex is OperationCanceledException ? "PasteActionCanceled" : "PasteError"),
             Details = (ex as PasteActionException)?.AIServiceMessage ?? string.Empty,
         };
 }

src/modules/AdvancedPaste/AdvancedPaste/Models/PasteFormats.cs

@@ -82,12 +82,34 @@ public enum PasteFormats
         KernelFunctionDescription = "Takes HTML data in the clipboard and transforms it to an HTML file.")]
     PasteAsHtmlFile,
 
+    [PasteFormatMetadata(
+        IsCoreAction = false,
+        ResourceId = "TranscodeToMp3",
+        IconGlyph = "\uE8D6",
+        RequiresAIService = false,
+        CanPreview = false,
+        SupportedClipboardFormats = ClipboardFormat.Audio | ClipboardFormat.Video,
+        IPCKey = AdvancedPasteTranscodeAction.PropertyNames.TranscodeToMp3,
+        KernelFunctionDescription = "Takes an audio or video file in the clipboard and transcodes it to MP3.")]
+    TranscodeToMp3,
+
+    [PasteFormatMetadata(
+        IsCoreAction = false,
+        ResourceId = "TranscodeToMp4",
+        IconGlyph = "\uE714",
+        RequiresAIService = false,
+        CanPreview = false,
+        SupportedClipboardFormats = ClipboardFormat.Video,
+        IPCKey = AdvancedPasteTranscodeAction.PropertyNames.TranscodeToMp4,
+        KernelFunctionDescription = "Takes a video file in the clipboard and transcodes it to MP4 (H.264/AAC).")]
+    TranscodeToMp4,
+
     [PasteFormatMetadata(
         IsCoreAction = false,
         IconGlyph = "\uE945",
         RequiresAIService = true,
         CanPreview = true,
-        SupportedClipboardFormats = ClipboardFormat.Text | ClipboardFormat.Html | ClipboardFormat.Audio | ClipboardFormat.Image,
+        SupportedClipboardFormats = ClipboardFormat.Text | ClipboardFormat.Html | ClipboardFormat.Audio | ClipboardFormat.Video | ClipboardFormat.Image,
         RequiresPrompt = true)]
     KernelQuery,
 

src/modules/AdvancedPaste/AdvancedPaste/Services/ICustomTextTransformService.cs

@@ -2,11 +2,13 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace AdvancedPaste.Services;
 
 public interface ICustomTextTransformService
 {
-    Task<string> TransformTextAsync(string prompt, string inputText);
+    Task<string> TransformTextAsync(string prompt, string inputText, CancellationToken cancellationToken, IProgress<double> progress);
 }

src/modules/AdvancedPaste/AdvancedPaste/Services/IKernelService.cs

@@ -2,6 +2,8 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System;
+using System.Threading;
 using System.Threading.Tasks;
 
 using Windows.ApplicationModel.DataTransfer;
@@ -10,5 +12,5 @@ namespace AdvancedPaste.Services;
 
 public interface IKernelService
 {
-    Task<DataPackage> TransformClipboardAsync(string prompt, DataPackageView clipboardData, bool isSavedQuery);
+    Task<DataPackage> TransformClipboardAsync(string prompt, DataPackageView clipboardData, bool isSavedQuery, CancellationToken cancellationToken, IProgress<double> progress);
 }

src/modules/AdvancedPaste/AdvancedPaste/Services/IPasteFormatExecutor.cs

@@ -2,6 +2,8 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Models;
@@ -11,5 +13,5 @@ namespace AdvancedPaste.Services;
 
 public interface IPasteFormatExecutor
 {
-    Task<DataPackage> ExecutePasteFormatAsync(PasteFormat pasteFormat, PasteActionSource source);
+    Task<DataPackage> ExecutePasteFormatAsync(PasteFormat pasteFormat, PasteActionSource source, CancellationToken cancellationToken, IProgress<double> progress);
 }

src/modules/AdvancedPaste/AdvancedPaste/Services/IPromptModerationService.cs

@@ -2,11 +2,12 @@
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace AdvancedPaste.Services;
 
 public interface IPromptModerationService
 {
-    Task ValidateAsync(string fullPrompt);
+    Task ValidateAsync(string fullPrompt, CancellationToken cancellationToken);
 }

src/modules/AdvancedPaste/AdvancedPaste/Services/KernelServiceBase.cs

@@ -6,6 +6,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text.Json;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Helpers;
@@ -36,12 +37,14 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
 
     protected abstract AIServiceUsage GetAIServiceUsage(ChatMessageContent chatMessage);
 
-    public async Task<DataPackage> TransformClipboardAsync(string prompt, DataPackageView clipboardData, bool isSavedQuery)
+    public async Task<DataPackage> TransformClipboardAsync(string prompt, DataPackageView clipboardData, bool isSavedQuery, CancellationToken cancellationToken, IProgress<double> progress)
     {
         Logger.LogTrace();
 
         var kernel = CreateKernel();
         kernel.SetDataPackageView(clipboardData);
+        kernel.SetCancellationToken(cancellationToken);
+        kernel.SetProgress(progress);
 
         CacheKey cacheKey = new() { Prompt = prompt, AvailableFormats = await clipboardData.GetAvailableFormatsAsync() };
         var maybeCacheValue = _queryCacheService.ReadOrNull(cacheKey);
@@ -51,7 +54,7 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
 
         try
         {
-            (chatHistory, var usage) = cacheUsed ? await ExecuteCachedActionChain(kernel, maybeCacheValue.ActionChain) : await ExecuteAICompletion(kernel, prompt);
+            (chatHistory, var usage) = cacheUsed ? await ExecuteCachedActionChain(kernel, maybeCacheValue.ActionChain) : await ExecuteAICompletion(kernel, prompt, cancellationToken);
 
             LogResult(cacheUsed, isSavedQuery, kernel.GetOrAddActionChain(), usage);
 
@@ -84,7 +87,7 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
             AdvancedPasteSemanticKernelErrorEvent errorEvent = new(ex is PasteActionModeratedException ? PasteActionModeratedException.ErrorDescription : ex.Message);
             PowerToysTelemetry.Log.WriteEvent(errorEvent);
 
-            if (ex is PasteActionException)
+            if (ex is PasteActionException or OperationCanceledException)
             {
                 throw;
             }
@@ -127,7 +130,7 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
         return $"{combinedSystemMessage}{newLine}{newLine}User instructions:{newLine}{userPromptMessage.Content}";
     }
 
-    private async Task<(ChatHistory ChatHistory, AIServiceUsage Usage)> ExecuteAICompletion(Kernel kernel, string prompt)
+    private async Task<(ChatHistory ChatHistory, AIServiceUsage Usage)> ExecuteAICompletion(Kernel kernel, string prompt, CancellationToken cancellationToken)
     {
         ChatHistory chatHistory = [];
 
@@ -141,10 +144,10 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
         chatHistory.AddSystemMessage($"Available clipboard formats: {await kernel.GetDataFormatsAsync()}");
         chatHistory.AddUserMessage(prompt);
 
-        await _promptModerationService.ValidateAsync(GetFullPrompt(chatHistory));
+        await _promptModerationService.ValidateAsync(GetFullPrompt(chatHistory), cancellationToken);
 
         var chatResult = await kernel.GetRequiredService<IChatCompletionService>()
-                                     .GetChatMessageContentAsync(chatHistory, PromptExecutionSettings, kernel);
+                                     .GetChatMessageContentAsync(chatHistory, PromptExecutionSettings, kernel, cancellationToken);
         chatHistory.Add(chatResult);
 
         var totalUsage = chatHistory.Select(GetAIServiceUsage)
@@ -157,6 +160,8 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
     {
         foreach (var item in actionChain)
         {
+            kernel.GetCancellationToken().ThrowIfCancellationRequested();
+
             if (item.Arguments.Count > 0)
             {
                 await ExecutePromptTransformAsync(kernel, item.Format, item.Arguments[PromptParameterName]);
@@ -208,14 +213,14 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
             async dataPackageView =>
             {
                 var input = await dataPackageView.GetTextAsync();
-                string output = await GetPromptBasedOutput(format, prompt, input);
+                string output = await GetPromptBasedOutput(format, prompt, input, kernel.GetCancellationToken(), kernel.GetProgress());
                 return DataPackageHelpers.CreateFromText(output);
             });
 
-    private async Task<string> GetPromptBasedOutput(PasteFormats format, string prompt, string input) =>
+    private async Task<string> GetPromptBasedOutput(PasteFormats format, string prompt, string input, CancellationToken cancellationToken, IProgress<double> progress) =>
         format switch
         {
-            PasteFormats.CustomTextTransformation => await _customTextTransformService.TransformTextAsync(prompt, input),
+            PasteFormats.CustomTextTransformation => await _customTextTransformService.TransformTextAsync(prompt, input, cancellationToken, progress),
             _ => throw new ArgumentException($"Unsupported format {format} for prompt transform", nameof(format)),
         };
 
@@ -223,7 +228,7 @@ public abstract class KernelServiceBase(IKernelQueryCacheService queryCacheServi
         ExecuteTransformAsync(
            kernel,
            new ActionChainItem(format, Arguments: []),
-           async dataPackageView => await TransformHelpers.TransformAsync(format, dataPackageView));
+           async dataPackageView => await TransformHelpers.TransformAsync(format, dataPackageView, kernel.GetCancellationToken(), kernel.GetProgress()));
 
     private static async Task<string> ExecuteTransformAsync(Kernel kernel, ActionChainItem actionChainItem, Func<DataPackageView, Task<DataPackage>> transformFunc)
     {

src/modules/AdvancedPaste/AdvancedPaste/Services/OpenAI/CustomTextTransformService.cs

@@ -4,6 +4,7 @@
 
 using System;
 using System.Text.Json;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Helpers;
@@ -23,11 +24,11 @@ public sealed class CustomTextTransformService(IAICredentialsProvider aiCredenti
     private readonly IAICredentialsProvider _aiCredentialsProvider = aiCredentialsProvider;
     private readonly IPromptModerationService _promptModerationService = promptModerationService;
 
-    private async Task<Completions> GetAICompletionAsync(string systemInstructions, string userMessage)
+    private async Task<Completions> GetAICompletionAsync(string systemInstructions, string userMessage, CancellationToken cancellationToken)
     {
         var fullPrompt = systemInstructions + "\n\n" + userMessage;
 
-        await _promptModerationService.ValidateAsync(fullPrompt);
+        await _promptModerationService.ValidateAsync(fullPrompt, cancellationToken);
 
         OpenAIClient azureAIClient = new(_aiCredentialsProvider.Key);
 
@@ -41,7 +42,8 @@ public sealed class CustomTextTransformService(IAICredentialsProvider aiCredenti
                 },
                 Temperature = 0.01F,
                 MaxTokens = 2000,
-            });
+            },
+            cancellationToken);
 
         if (response.Value.Choices[0].FinishReason == "length")
         {
@@ -51,7 +53,7 @@ public sealed class CustomTextTransformService(IAICredentialsProvider aiCredenti
         return response;
     }
 
-    public async Task<string> TransformTextAsync(string prompt, string inputText)
+    public async Task<string> TransformTextAsync(string prompt, string inputText, CancellationToken cancellationToken, IProgress<double> progress)
     {
         if (string.IsNullOrWhiteSpace(prompt))
         {
@@ -80,7 +82,7 @@ Output:
 
         try
         {
-            var response = await GetAICompletionAsync(systemInstructions, userMessage);
+            var response = await GetAICompletionAsync(systemInstructions, userMessage, cancellationToken);
 
             var usage = response.Usage;
             AdvancedPasteGenerateCustomFormatEvent telemetryEvent = new(usage.PromptTokens, usage.CompletionTokens, ModelName);
@@ -98,7 +100,7 @@ Output:
             AdvancedPasteGenerateCustomErrorEvent errorEvent = new(ex is PasteActionModeratedException ? PasteActionModeratedException.ErrorDescription : ex.Message);
             PowerToysTelemetry.Log.WriteEvent(errorEvent);
 
-            if (ex is PasteActionException)
+            if (ex is PasteActionException or OperationCanceledException)
             {
                 throw;
             }

src/modules/AdvancedPaste/AdvancedPaste/Services/OpenAI/PromptModerationService.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System.ClientModel;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Helpers;
@@ -18,12 +19,12 @@ public sealed class PromptModerationService(IAICredentialsProvider aiCredentials
 
     private readonly IAICredentialsProvider _aiCredentialsProvider = aiCredentialsProvider;
 
-    public async Task ValidateAsync(string fullPrompt)
+    public async Task ValidateAsync(string fullPrompt, CancellationToken cancellationToken)
     {
         try
         {
             ModerationClient moderationClient = new(ModelName, _aiCredentialsProvider.Key);
-            var moderationClientResult = await moderationClient.ClassifyTextAsync(fullPrompt);
+            var moderationClientResult = await moderationClient.ClassifyTextAsync(fullPrompt, cancellationToken);
             var moderationResult = moderationClientResult.Value;
 
             Logger.LogDebug($"{nameof(PromptModerationService)}.{nameof(ValidateAsync)} complete; {nameof(moderationResult.Flagged)}={moderationResult.Flagged}");

src/modules/AdvancedPaste/AdvancedPaste/Services/PasteFormatExecutor.cs

@@ -3,6 +3,7 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Helpers;
@@ -17,7 +18,7 @@ public sealed class PasteFormatExecutor(IKernelService kernelService, ICustomTex
     private readonly IKernelService _kernelService = kernelService;
     private readonly ICustomTextTransformService _customTextTransformService = customTextTransformService;
 
-    public async Task<DataPackage> ExecutePasteFormatAsync(PasteFormat pasteFormat, PasteActionSource source)
+    public async Task<DataPackage> ExecutePasteFormatAsync(PasteFormat pasteFormat, PasteActionSource source, CancellationToken cancellationToken, IProgress<double> progress)
     {
         if (!pasteFormat.IsEnabled)
         {
@@ -34,9 +35,9 @@ public sealed class PasteFormatExecutor(IKernelService kernelService, ICustomTex
         return await Task.Run(async () =>
             pasteFormat.Format switch
             {
-                PasteFormats.KernelQuery => await _kernelService.TransformClipboardAsync(pasteFormat.Prompt, clipboardData, pasteFormat.IsSavedQuery),
-                PasteFormats.CustomTextTransformation => DataPackageHelpers.CreateFromText(await _customTextTransformService.TransformTextAsync(pasteFormat.Prompt, await clipboardData.GetTextAsync())),
-                _ => await TransformHelpers.TransformAsync(format, clipboardData),
+                PasteFormats.KernelQuery => await _kernelService.TransformClipboardAsync(pasteFormat.Prompt, clipboardData, pasteFormat.IsSavedQuery, cancellationToken, progress),
+                PasteFormats.CustomTextTransformation => DataPackageHelpers.CreateFromText(await _customTextTransformService.TransformTextAsync(pasteFormat.Prompt, await clipboardData.GetTextAsync(), cancellationToken, progress)),
+                _ => await TransformHelpers.TransformAsync(format, clipboardData, cancellationToken, progress),
             });
     }
 

src/modules/AdvancedPaste/AdvancedPaste/Strings/en-us/Resources.resw

@@ -135,6 +135,9 @@
   <data name="OpenAIApiKeyError" xml:space="preserve">
     <value>OpenAI request failed with status code: </value>
   </data>
+  <data name="PasteActionCanceled" xml:space="preserve">
+    <value>The paste operation was canceled</value>
+  </data>
   <data name="PasteError" xml:space="preserve">
     <value>An error occurred during the paste operation</value>
   </data>
@@ -188,7 +191,19 @@
   </data>
   <data name="PasteAsHtmlFile" xml:space="preserve">
     <value>Paste as .html file</value>
+  </data>
+  <data name="TranscodeToMp3" xml:space="preserve">
+    <value>Transcode to .mp3</value>
   </data>  
+  <data name="TranscodeToMp4" xml:space="preserve">
+    <value>Transcode to .mp4 (H.264/AAC)</value>
+  </data>
+  <data name="TranscodeErrorGeneral" xml:space="preserve">
+    <value>An error occurred while transcoding media file</value>
+  </data>
+  <data name="TranscodeErrorUnsupportedCodec" xml:space="preserve">
+    <value>The media file contains an unsupported codec</value>
+  </data>
   <data name="PasteButtonAutomation.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
     <value>Paste</value>
   </data>
@@ -207,6 +222,9 @@
   <data name="SendBtnToolTip.Text" xml:space="preserve">
     <value>Generate and paste data</value>
   </data>
+  <data name="CancelBtnToolTip.Text" xml:space="preserve">
+    <value>Cancel paste operation</value>
+  </data>
   <data name="RegenerateBtnToolTip.Text" xml:space="preserve">
     <value>Regenerate</value>
   </data>
@@ -216,6 +234,9 @@
   <data name="SendButtonAutomation.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
     <value>Generate and paste data</value>
   </data>
+  <data name="CancelBtnAutomation.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
+    <value>Cancel paste operation</value>
+  </data>
   <data name="SettingsBtn.Content" xml:space="preserve">
     <value>Open settings</value>
   </data>

src/modules/AdvancedPaste/AdvancedPaste/ViewModels/OptionsViewModel.cs

@@ -8,6 +8,8 @@ using System.Collections.ObjectModel;
 using System.Diagnostics;
 using System.IO.Abstractions;
 using System.Linq;
+using System.Runtime.InteropServices;
+using System.Threading;
 using System.Threading.Tasks;
 
 using AdvancedPaste.Helpers;
@@ -29,7 +31,7 @@ using DispatcherQueue = Microsoft.UI.Dispatching.DispatcherQueue;
 
 namespace AdvancedPaste.ViewModels
 {
-    public sealed partial class OptionsViewModel : ObservableObject, IDisposable
+    public sealed partial class OptionsViewModel : ObservableObject, IProgress<double>, IDisposable
     {
         private readonly DispatcherQueue _dispatcherQueue = DispatcherQueue.GetForCurrentThread();
         private readonly DispatcherTimer _clipboardTimer;
@@ -37,6 +39,8 @@ namespace AdvancedPaste.ViewModels
         private readonly IPasteFormatExecutor _pasteFormatExecutor;
         private readonly IAICredentialsProvider _aiCredentialsProvider;
 
+        private CancellationTokenSource _pasteActionCancellationTokenSource;
+
         public DataPackageView ClipboardData { get; set; }
 
         [ObservableProperty]
@@ -65,7 +69,11 @@ namespace AdvancedPaste.ViewModels
         private bool _pasteFormatsDirty;
 
         [ObservableProperty]
-        private bool _busy;
+        private bool _isBusy;
+
+        [ObservableProperty]
+        [NotifyPropertyChangedFor(nameof(HasIndeterminateTransformProgress))]
+        private double _transformProgress = double.NaN;
 
         public ObservableCollection<PasteFormat> StandardPasteFormats { get; } = [];
 
@@ -81,9 +89,24 @@ namespace AdvancedPaste.ViewModels
 
         public bool ClipboardHasDataForCustomAI => PasteFormat.SupportsClipboardFormats(CustomAIFormat, AvailableClipboardFormats);
 
+        public bool HasIndeterminateTransformProgress => double.IsNaN(TransformProgress);
+
         private PasteFormats CustomAIFormat => _userSettings.IsAdvancedAIEnabled ? PasteFormats.KernelQuery : PasteFormats.CustomTextTransformation;
 
-        private bool Visible => GetMainWindow()?.Visible is true;
+        private bool Visible
+        {
+            get
+            {
+                try
+                {
+                    return GetMainWindow()?.Visible is true;
+                }
+                catch (COMException)
+                {
+                    return false; // window is closed
+                }
+            }
+        }
 
         public event EventHandler PreviewRequested;
 
@@ -189,7 +212,12 @@ namespace AdvancedPaste.ViewModels
 
             void UpdateFormats(ObservableCollection<PasteFormat> collection, IEnumerable<PasteFormat> pasteFormats)
             {
-                collection.Clear();
+                // Hack: Clear collection via repeated RemoveAt to avoid this crash, which seems to occasionally occur when using Clear:
+                // https://github.com/microsoft/microsoft-ui-xaml/issues/8684
+                while (collection.Count > 0)
+                {
+                    collection.RemoveAt(collection.Count - 1);
+                }
 
                 foreach (var format in FilterAndSort(pasteFormats))
                 {
@@ -214,12 +242,13 @@ namespace AdvancedPaste.ViewModels
         public void Dispose()
         {
             _clipboardTimer.Stop();
+            _pasteActionCancellationTokenSource?.Dispose();
             GC.SuppressFinalize(this);
         }
 
         public async Task ReadClipboardAsync()
         {
-            if (Busy)
+            if (IsBusy)
             {
                 return;
             }
@@ -324,6 +353,10 @@ namespace AdvancedPaste.ViewModels
         {
             await ClipboardHelper.TryCopyPasteAsync(package, HideWindow);
             Query = string.Empty;
+
+            // Delete any temp files created. A delay is needed to ensure the file is not in use by the target application -
+            // for example, when pasting onto File Explorer, the paste operation will trigger a file copy.
+            _ = Task.Run(() => package.GetView().TryCleanupAfterDelayAsync(TimeSpan.FromSeconds(30)));
         }
 
         // Command to select the previous custom format
@@ -362,7 +395,7 @@ namespace AdvancedPaste.ViewModels
 
         internal async Task ExecutePasteFormatAsync(PasteFormat pasteFormat, PasteActionSource source)
         {
-            if (Busy)
+            if (IsBusy)
             {
                 Logger.LogWarning($"Execution of {pasteFormat.Format} from {source} suppressed as busy");
                 return;
@@ -377,16 +410,18 @@ namespace AdvancedPaste.ViewModels
             var elapsedWatch = Stopwatch.StartNew();
             Logger.LogDebug($"Started executing {pasteFormat.Format} from source {source}");
 
-            Busy = true;
+            IsBusy = true;
+            _pasteActionCancellationTokenSource = new();
+            TransformProgress = double.NaN;
             PasteActionError = PasteActionError.None;
             Query = pasteFormat.Query;
 
             try
             {
                 // Minimum time to show busy spinner for AI actions when triggered by global keyboard shortcut.
-                var aiActionMinTaskTime = TimeSpan.FromSeconds(2);
+                var aiActionMinTaskTime = TimeSpan.FromSeconds(1.5);
                 var delayTask = (Visible && source == PasteActionSource.GlobalKeyboardShortcut) ? Task.Delay(aiActionMinTaskTime) : Task.CompletedTask;
-                var dataPackage = await _pasteFormatExecutor.ExecutePasteFormatAsync(pasteFormat, source);
+                var dataPackage = await _pasteFormatExecutor.ExecutePasteFormatAsync(pasteFormat, source, _pasteActionCancellationTokenSource.Token, this);
 
                 await delayTask;
 
@@ -410,7 +445,9 @@ namespace AdvancedPaste.ViewModels
                 PasteActionError = PasteActionError.FromException(ex);
             }
 
-            Busy = false;
+            IsBusy = false;
+            _pasteActionCancellationTokenSource?.Dispose();
+            _pasteActionCancellationTokenSource = null;
             elapsedWatch.Stop();
             Logger.LogDebug($"Finished executing {pasteFormat.Format} from source {source}; timeTakenMs={elapsedWatch.ElapsedMilliseconds}");
         }
@@ -484,5 +521,26 @@ namespace AdvancedPaste.ViewModels
 
             return IsAllowedByGPO && _aiCredentialsProvider.Refresh();
         }
+
+        public async Task CancelPasteActionAsync()
+        {
+            if (_pasteActionCancellationTokenSource != null)
+            {
+                await _pasteActionCancellationTokenSource.CancelAsync();
+            }
+        }
+
+        void IProgress<double>.Report(double value)
+        {
+            ReportProgress(value);
+        }
+
+        private void ReportProgress(double value)
+        {
+            _dispatcherQueue.TryEnqueue(() =>
+            {
+                TransformProgress = value;
+            });
+        }
     }
 }

src/modules/AdvancedPaste/AdvancedPasteModuleInterface/trace.cpp

@@ -88,6 +88,8 @@ void Trace::AdvancedPaste_SettingsTelemetry(const PowertoyModuleIface::Hotkey& p
         TraceLoggingWideString(getAdditionalActionHotkeyCStr(L"ImageToText"), "ImageToTextHotkey"),
         TraceLoggingWideString(getAdditionalActionHotkeyCStr(L"PasteAsTxtFile"), "PasteAsTxtFileHotkey"),
         TraceLoggingWideString(getAdditionalActionHotkeyCStr(L"PasteAsPngFile"), "PasteAsPngFileHotkey"),
-        TraceLoggingWideString(getAdditionalActionHotkeyCStr(L"PasteAsHtmlFile"), "PasteAsHtmlFileHotkey")
+        TraceLoggingWideString(getAdditionalActionHotkeyCStr(L"PasteAsHtmlFile"), "PasteAsHtmlFileHotkey"),
+        TraceLoggingWideString(getAdditionalActionHotkeyCStr(L"TranscodeToMp3"), "TranscodeToMp3Hotkey"),
+        TraceLoggingWideString(getAdditionalActionHotkeyCStr(L"TranscodeToMp4"), "TranscodeToMp4Hotkey")
     );
 }

src/modules/CharacterMap/CharacterMapModuleInterface/CharacterMapModuleInterface.rc

@@ -0,0 +1,40 @@
+#include <windows.h>
+#include "resource.h"
+#include "../../../common/version/version.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+#include "winres.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+1 VERSIONINFO
+FILEVERSION FILE_VERSION
+PRODUCTVERSION PRODUCT_VERSION
+FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+FILEFLAGS VS_FF_DEBUG
+#else
+FILEFLAGS 0x0L
+#endif
+FILEOS VOS_NT_WINDOWS32
+FILETYPE VFT_DLL
+FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0" // US English (0x0409), Unicode (0x04B0) charset
+        BEGIN
+            VALUE "CompanyName", COMPANY_NAME
+            VALUE "FileDescription", FILE_DESCRIPTION
+            VALUE "FileVersion", FILE_VERSION_STRING
+            VALUE "InternalName", INTERNAL_NAME
+            VALUE "LegalCopyright", COPYRIGHT_NOTE
+            VALUE "OriginalFilename", ORIGINAL_FILENAME
+            VALUE "ProductName", PRODUCT_NAME
+            VALUE "ProductVersion", PRODUCT_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200 // US English (0x0409), Unicode (1200) charset
+    END
+END

src/modules/CharacterMap/CharacterMapModuleInterface/CharacterMapModuleInterface.vcxproj

@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{4D6155E2-055B-4B0F-85E8-C3A1AAA54C82}</ProjectGuid>
+    <RootNamespace>CharacterMapModuleInterface</RootNamespace>
+    <ProjectName>CharacterMapModuleInterface</ProjectName>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <OutDir>..\..\..\..\$(Platform)\$(Configuration)\</OutDir>
+    <TargetName>PowerToys.CharacterMapModuleInterface</TargetName>
+  </PropertyGroup>
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <AdditionalIncludeDirectories>..\;$(SolutionDir)src\common\Telemetry;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <OutputFile>$(OutDir)$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+    <ClInclude Include="resource.h" />
+    <ClInclude Include="trace.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="CharacterMapModuleInterface.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="dllmain.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(UsePrecompiledHeaders)' != 'false'">Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="trace.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\common\logger\logger.vcxproj">
+      <Project>{d9b8fc84-322a-4f9f-bbb9-20915c47ddfd}</Project>
+    </ProjectReference>
+    <ProjectReference Include="..\..\..\common\SettingsAPI\SettingsAPI.vcxproj">
+      <Project>{6955446d-23f7-4023-9bb3-8657f904af99}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" />
+  </ImportGroup>
+  <Import Project="..\..\..\..\deps\spdlog.props" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props'))" />
+  </Target>
+</Project>

src/modules/CharacterMap/CharacterMapModuleInterface/CharacterMapModuleInterface.vcxproj.filters

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{f5f15d18-c8fd-4f95-9bdd-d7229f26bcfe}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{cf528697-5153-4e00-802d-18b371bbe659}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{88e6c746-6a4b-47a4-b5da-a78a9b3e92f6}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="resource.h">
+      <Filter>Resource Files</Filter>
+    </ClInclude>
+    <ClInclude Include="pch.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="trace.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="CharacterMapModuleInterface.rc">
+      <Filter>Resource Files</Filter>
+    </ResourceCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="dllmain.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="pch.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="trace.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>

src/modules/CharacterMap/CharacterMapModuleInterface/dllmain.cpp

@@ -0,0 +1,270 @@
+#include "pch.h"
+
+#include <modules/interface/powertoy_module_interface.h>
+#include <common/SettingsAPI/settings_objects.h>
+
+#include "trace.h"
+#include <common/logger/logger.h>
+#include <common/utils/logger_helper.h>
+#include <common/utils/EventWaiter.h>
+#include <common/utils/resources.h>
+#include <common/utils/winapi_error.h>
+
+#include <shellapi.h>
+#include <common/interop/shared_constants.h>
+
+namespace NonLocalizable
+{
+    //const wchar_t ModulePath[] = L"PowerToys.CharacterMap.exe";
+    const inline wchar_t ModuleKey[] = L"CharacterMap";
+}
+
+BOOL APIENTRY DllMain( HMODULE /*hModule*/,
+                       DWORD  ul_reason_for_call,
+                       LPVOID /*lpReserved*/
+                     )
+{
+    switch (ul_reason_for_call)
+    {
+    case DLL_PROCESS_ATTACH:
+        Trace::RegisterProvider();
+        break;
+    case DLL_THREAD_ATTACH:
+    case DLL_THREAD_DETACH:
+        break;
+    case DLL_PROCESS_DETACH:
+        Trace::UnregisterProvider();
+        break;
+    }
+    return TRUE;
+
+}
+
+class CharacterMapModuleInterface : public PowertoyModuleIface
+{
+public:
+    // Return the localized display name of the powertoy
+    virtual PCWSTR get_name() override
+    {
+        return app_name.c_str();
+    }
+
+    // Return the non localized key of the powertoy, this will be cached by the runner
+    virtual const wchar_t* get_key() override
+    {
+        return app_key.c_str();
+    }
+
+    // Return the configured status for the gpo policy for the module
+    virtual powertoys_gpo::gpo_rule_configured_t gpo_policy_enabled_configuration() override
+    {
+        return powertoys_gpo::getConfiguredCharacterMapEnabledValue();
+    }
+
+    // Return JSON with the configuration options.
+    // These are the settings shown on the settings page along with their current values.
+    virtual bool get_config(wchar_t* buffer, int* buffer_size) override
+    {
+        HINSTANCE hinstance = reinterpret_cast<HINSTANCE>(&__ImageBase);
+
+        // TODO: Read settings from Registry.
+
+        // Create a Settings object.
+        PowerToysSettings::Settings settings(hinstance, get_name());
+
+        return settings.serialize_to_buffer(buffer, buffer_size);
+    }
+
+    // Passes JSON with the configuration settings for the powertoy.
+    // This is called when the user hits Save on the settings page.
+    virtual void set_config(const wchar_t*) override
+    {
+        try
+        {
+            // Parse the input JSON string.
+            // TODO: Save settings to registry.
+        }
+        catch (std::exception&)
+        {
+            // Improper JSON.
+        }
+    }
+
+    // Enable the powertoy
+    virtual void enable()
+    {
+        Logger::info("CharacterMap enabling");
+        Enable();
+    }
+
+    // Disable the powertoy
+    virtual void disable()
+    {
+        Logger::info("CharacterMap disabling");
+        Disable(true);
+    }
+
+    // Returns if the powertoy is enabled
+    virtual bool is_enabled() override
+    {
+        return m_enabled;
+    }
+
+    // Destroy the powertoy and free memory
+    virtual void destroy() override
+    {
+        Disable(false);
+        delete this;
+    }
+
+    CharacterMapModuleInterface()
+    {
+        app_name = L"CharacterMap";
+        app_key = NonLocalizable::ModuleKey;
+        LoggerHelpers::init_logger(app_key, L"ModuleInterface", LogSettings::characterMapLoggerName);
+        //m_reload_settings_event_handle = CreateDefaultEvent(CommonSharedConstants::ZOOMIT_REFRESH_SETTINGS_EVENT);
+        //m_exit_event_handle = CreateDefaultEvent(CommonSharedConstants::ZOOMIT_EXIT_EVENT);
+        triggerEvent = CreateEvent(nullptr, false, false, CommonSharedConstants::CHARACTER_MAP_TRIGGER_EVENT);
+        triggerEventWaiter = EventWaiter(CommonSharedConstants::CHARACTER_MAP_TRIGGER_EVENT, [this](int) {
+            on_hotkey(0);
+        });
+    }
+    ~CharacterMapModuleInterface()
+    {
+        if (m_enabled)
+        {
+            terminate_process();
+        }
+        m_enabled = false;
+    }
+
+private:  
+    bool is_process_running()
+    {
+        return WaitForSingleObject(m_hProcess, 0) == WAIT_TIMEOUT;
+    }
+    void launch_process()
+    {
+        if (m_enabled)
+        {
+            Logger::trace(L"Starting Character Map process");
+            //Get current process id
+            unsigned long powertoys_pid = GetCurrentProcessId();
+            std::wstring executable_args = std::to_wstring(powertoys_pid);
+
+            // Initiate SHELLEXECUTEINFOW structure
+            SHELLEXECUTEINFOW sei{ sizeof(sei) };
+            sei.fMask = SEE_MASK_NOCLOSEPROCESS | SEE_MASK_FLAG_NO_UI;
+            sei.lpFile = L"shell:AppsFolder\\PowerToys.CharacterMap_8wekyb3d8bbwe!App"; // UWP App ID
+            sei.nShow = SW_SHOWNORMAL;
+            sei.lpParameters = executable_args.c_str(); 
+
+            // start the app
+            if (ShellExecuteExW(&sei) == FALSE)
+            {
+              
+                Logger::error(L"Character Map failed to start. {}", get_last_error_or_default(GetLastError())); 
+                
+            }
+            else
+            {
+                Logger::trace("PowerToys.CharacterMap started successfully!");
+                m_hProcess = sei.hProcess;
+            }
+        }
+    }
+    virtual void call_custom_action(const wchar_t* action) override
+    {
+        try
+        {
+            PowerToysSettings::CustomActionObject action_object =
+                PowerToysSettings::CustomActionObject::from_json_string(action);
+
+            if (action_object.get_name() == L"Launch")
+            {
+                launch_process();
+                Trace::ActivateEditor();
+            }
+        }
+        catch (std::exception&)
+        {
+            Logger::error(L"Failed to parse action. {}", action);
+        }
+    }
+    void terminate_process()
+    {
+        TerminateProcess(m_hProcess, 1);
+    }
+
+
+    bool is_enabled_by_default() const override
+    {
+        return false;
+    }
+
+    void Enable()
+    {
+        m_enabled = true;
+
+        // Log telemetry
+        Trace::EnableCharacterMap(true);
+    }
+
+    void Disable(bool const traceEvent)
+    {
+        m_enabled = false;
+        // Log telemetry
+        if (traceEvent)
+        {
+            Trace::EnableCharacterMap(false);
+        }
+        if (m_enabled)
+        {
+            // let the DLL disable the app
+            terminate_process();
+
+            Logger::trace(L"Disabling Registry Preview...");
+        }
+
+        m_enabled = false;
+
+    }
+
+    virtual bool on_hotkey(size_t /*hotkeyId*/) override
+    {
+        if (m_enabled)
+        {
+            Logger::trace(L"Character Map hotkey pressed");
+            if (is_process_running())
+            {
+                terminate_process();
+            }
+            else
+            {
+                launch_process();
+            }
+
+            return true;
+        }
+
+        return false;
+    }
+    
+
+    std::wstring app_name;
+    std::wstring app_key; //contains the non localized key of the powertoy
+
+    bool m_enabled = false;
+    HANDLE m_hProcess = nullptr;
+
+    HANDLE triggerEvent;
+    EventWaiter triggerEventWaiter;
+
+    //HANDLE m_reload_settings_event_handle = NULL;
+    //HANDLE m_exit_event_handle = NULL;
+};
+
+extern "C" __declspec(dllexport) PowertoyModuleIface* __cdecl powertoy_create()
+{
+    return new CharacterMapModuleInterface();
+}

src/modules/CharacterMap/CharacterMapModuleInterface/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.240111.5" targetFramework="native" />
+</packages>

src/modules/CharacterMap/CharacterMapModuleInterface/pch.cpp

@@ -0,0 +1,5 @@
+// pch.cpp: source file corresponding to the pre-compiled header
+
+#include "pch.h"
+
+// When you are using pre-compiled headers, this source file is necessary for compilation to succeed.

src/modules/CharacterMap/CharacterMapModuleInterface/pch.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
+#include <windows.h>
+#include <Unknwn.h>
+#include <winrt/base.h>
+#include <winrt/Windows.Foundation.h>
+#include <winrt/Windows.Foundation.Collections.h>
+#include <ProjectTelemetry.h>
+#include <TraceLoggingActivity.h>

src/modules/CharacterMap/CharacterMapModuleInterface/resource.h

@@ -0,0 +1,13 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by ZoomItModuleInterface.rc
+
+//////////////////////////////
+// Non-localizable
+
+#define FILE_DESCRIPTION "PowerToys CharacterMapModuleInterface"
+#define INTERNAL_NAME "PowerToys.CharacterMapModuleInterface"
+#define ORIGINAL_FILENAME "PowerToys.CharacterMapModuleInterface.dll"
+
+// Non-localizable
+//////////////////////////////

src/modules/CharacterMap/CharacterMapModuleInterface/trace.cpp

@@ -0,0 +1,40 @@
+#include "pch.h"
+#include "trace.h"
+
+TRACELOGGING_DEFINE_PROVIDER(
+    g_hProvider,
+    "Microsoft.PowerToys",
+    // {38e8889b-9731-53f5-e901-e8a7c1753074}
+    (0x38e8889b, 0x9731, 0x53f5, 0xe9, 0x01, 0xe8, 0xa7, 0xc1, 0x75, 0x30, 0x74),
+    TraceLoggingOptionProjectTelemetry());
+
+void Trace::RegisterProvider()
+{
+    TraceLoggingRegister(g_hProvider);
+}
+
+void Trace::UnregisterProvider()
+{
+    TraceLoggingUnregister(g_hProvider);
+}
+
+// Log if the user has ZoomIt enabled or disabled
+void Trace::EnableCharacterMap(const bool enabled) noexcept
+{
+    TraceLoggingWrite(
+        g_hProvider,
+        "EnableCharacterMap_EnableZoomIt",
+        ProjectTelemetryPrivacyDataTag(ProjectTelemetryTag_ProductAndServicePerformance),
+        TraceLoggingKeyword(PROJECT_KEYWORD_MEASURE),
+        TraceLoggingBoolean(enabled, "Enabled"));
+}
+
+// Log that the user tried to activate the app
+void Trace::ActivateEditor() noexcept
+{
+    TraceLoggingWrite(
+        g_hProvider,
+        "EnableCharacterMap_Activate",
+        ProjectTelemetryPrivacyDataTag(ProjectTelemetryTag_ProductAndServicePerformance),
+        TraceLoggingKeyword(PROJECT_KEYWORD_MEASURE));
+}

src/modules/CharacterMap/CharacterMapModuleInterface/trace.h

@@ -0,0 +1,13 @@
+#pragma once
+
+class Trace
+{
+public:
+    static void RegisterProvider();
+    static void UnregisterProvider();
+
+    // Log if the user has ZoomIt enabled or disabled
+    static void EnableCharacterMap(const bool enabled) noexcept;
+    // Log that the user tried to activate the app
+    static void ActivateEditor() noexcept;
+};

src/modules/Hosts/Hosts.FuzzTests/Fuzz.md

@@ -0,0 +1,35 @@
+# Create Fuzzing Tests in your .NET Code Project
+
+This document provides a step-by-step guide for integrating fuzzing tests into your .NET project.
+
+### Step1: Add a Fuzzing Test Project
+Create a new test project within your module folder. Ensure the project name follows the format *.FuzzTests*.
+
+### step2:  Add FuzzTests and OneFuzzConfig.json to your fuzzing test project
+Follow the instructions in [Fuzz.md](https://github.com/microsoft/PowerToys/blob/main/src/modules/AdvancedPaste/AdvancedPaste.FuzzTests/Fuzz.md) from AdvancedPaste.FuzzTests to properly integrate fuzzing tests into your project.
+
+Configuring **OneFuzzConfig.json**:
+1. Update the dll, class, method, and FuzzingTargetBinaries field in the fuzzers list.
+2. Modify the AssignedTo field in the adoTemplate list.
+3. Set the jobNotificationEmail to your Microsoft email account.
+4. Update the projectName and targetName fields in the oneFuzzJobs list.
+5. Define job dependencies in the following directory:
+Example:
+```PowerToys\x64\Debug\tests\Hosts.FuzzTests\net8.0-windows10.0.19041.0```
+
+
+# step3: Configure the OneFuzz Pipeline
+Modify the patterns in the job steps within [job-fuzz.yml](https://github.com/microsoft/PowerToys/blob/main/.pipelines/v2/templates/job-fuzz.yml) to match your fuzzing project name.
+
+Example:
+```
+ - download: current
+        displayName: Download artifacts
+        artifact: $(ArtifactName)
+        patterns: |-
+          **/tests/Hosts.FuzzTests/**
+```
+
+
+# step4:  Submit OneFuzz Pipeline and Verify Results on the OneFuzz Platform 
+After executing the tests, check your email for the job link. Click the link to review the fuzzing test results.

src/modules/Hosts/Hosts.FuzzTests/FuzzTests.cs

@@ -0,0 +1,101 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+using System;
+using System.IO;
+using System.IO.Abstractions.TestingHelpers;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+using Hosts.Tests.Mocks;
+using HostsUILib.Helpers;
+using HostsUILib.Models;
+using HostsUILib.Settings;
+using Moq;
+
+namespace Hosts.FuzzTests
+{
+    public class FuzzTests
+    {
+        private static Mock<IUserSettings> _userSettings;
+        private static Mock<IElevationHelper> _elevationHelper;
+
+        // Case1： Fuzzing method for ValidIPv4
+        public static void FuzzValidIPv4(ReadOnlySpan<byte> input)
+        {
+            try
+            {
+                string address = System.Text.Encoding.UTF8.GetString(input);
+                bool isValid = ValidationHelper.ValidIPv4(address);
+            }
+            catch (Exception ex) when (ex is RegexMatchTimeoutException)
+            {
+                throw;
+            }
+        }
+
+        // Case2: fuzzing method for ValidIPv6
+        public static void FuzzValidIPv6(ReadOnlySpan<byte> input)
+        {
+            try
+            {
+                string address = System.Text.Encoding.UTF8.GetString(input);
+                bool isValid = ValidationHelper.ValidIPv6(address);
+            }
+            catch (Exception ex) when (ex is RegexMatchTimeoutException)
+            {
+                throw;
+            }
+        }
+
+        // Case3: fuzzing method for ValidHosts
+        public static void FuzzValidHosts(ReadOnlySpan<byte> input)
+        {
+            try
+            {
+                string hosts = System.Text.Encoding.UTF8.GetString(input);
+                bool isValid = ValidationHelper.ValidHosts(hosts, true);
+            }
+            catch (Exception ex) when (ex is RegexMatchTimeoutException)
+            {
+                // It's important to filter out any *expected* exceptions from our code here.
+                // However, catching all exceptions is considered an anti-pattern because it may suppress legitimate
+                // issues, such as a NullReferenceException thrown by our code. In this case, we still re-throw
+                // the exception, as the ToJsonFromXmlOrCsvAsync method is not expected to throw any exceptions.
+                throw;
+            }
+        }
+
+        public static void FuzzWriteAsync(ReadOnlySpan<byte> data)
+        {
+            try
+            {
+                _userSettings = new Mock<IUserSettings>();
+                _elevationHelper = new Mock<IElevationHelper>();
+                _elevationHelper.Setup(m => m.IsElevated).Returns(true);
+
+                var fileSystem = new CustomMockFileSystem();
+                var service = new HostsService(fileSystem, _userSettings.Object, _elevationHelper.Object);
+
+                string input = System.Text.Encoding.UTF8.GetString(data);
+
+                // Since the WriteAsync method does not involve content parsing, we won't fuzz the additionalLines in the hosts file.
+                string additionalLines = " ";
+                string hosts = input;
+                string address = input;
+                string comments = input;
+                var entries = new List<Entry>
+                {
+                    new Entry(1, hosts, address, comments, true),
+                };
+
+                // fuzzing WriteAsync
+                _ = Task.Run(async () => await service.WriteAsync(additionalLines, entries));
+            }
+            catch (Exception ex) when (ex is ArgumentException)
+            {
+                throw;
+            }
+        }
+    }
+}

src/modules/Hosts/Hosts.FuzzTests/Hosts.FuzzTests.csproj

@@ -0,0 +1,51 @@
+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<TargetFramework>net8.0-windows10.0.19041.0</TargetFramework>
+		<LangVersion>latest</LangVersion>
+		<ImplicitUsings>enable</ImplicitUsings>
+	</PropertyGroup>
+	
+	<PropertyGroup>
+		<OutputPath>..\..\..\..\$(Platform)\$(Configuration)\tests\Hosts.FuzzTests\</OutputPath>
+	</PropertyGroup>
+	
+	<ItemGroup>
+	  <Compile Include="..\Hosts.Tests\Mocks\CustomMockFileSystem.cs" Link="CustomMockFileSystem.cs" />
+	  <Compile Include="..\Hosts.Tests\Mocks\MockFileSystemWatcher.cs" Link="MockFileSystemWatcher.cs" />
+	  <Compile Include="..\Hosts.Tests\Mocks\MockFileSystemWatcherFactory.cs" Link="MockFileSystemWatcherFactory.cs" />
+	  <Compile Include="..\HostsUILib\Consts.cs" Link="Consts.cs" />
+	  <Compile Include="..\HostsUILib\Helpers\ValidationHelper.cs" Link="ValidationHelper.cs" />
+	  <Compile Include="..\HostsUILib\Exceptions\NotRunningElevatedException.cs" Link="NotRunningElevatedException.cs" />
+	  <Compile Include="..\HostsUILib\Exceptions\ReadOnlyHostsException.cs" Link="ReadOnlyHostsException.cs" />
+	  <Compile Include="..\HostsUILib\Helpers\HostsService.cs" Link="HostsService.cs" />
+	  <Compile Include="..\HostsUILib\Helpers\IElevationHelper.cs" Link="IElevationHelper.cs" />
+	  <Compile Include="..\HostsUILib\Helpers\IHostsService.cs" Link="IHostsService.cs" />
+	  <Compile Include="..\HostsUILib\Helpers\ILogger.cs" Link="ILogger.cs" />
+	  <Compile Include="..\HostsUILib\Helpers\LoggerInstance.cs" Link="LoggerInstance.cs" />
+	  <Compile Include="..\HostsUILib\Models\AddressType.cs" Link="AddressType.cs" />
+	  <Compile Include="..\HostsUILib\Models\Entry.cs" Link="Entry.cs" />
+	  <Compile Include="..\HostsUILib\Models\HostsData.cs" Link="HostsData.cs" />
+	  <Compile Include="..\HostsUILib\Settings\HostsAdditionalLinesPosition.cs" Link="HostsAdditionalLinesPosition.cs" />
+	  <Compile Include="..\HostsUILib\Settings\HostsEncoding.cs" Link="HostsEncoding.cs" />
+	  <Compile Include="..\HostsUILib\Settings\IUserSettings.cs" Link="IUserSettings.cs" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<PackageReference Include="Moq" />
+		<PackageReference Include="MSTest" />
+		<PackageReference Include="System.IO.Abstractions" />
+		<PackageReference Include="CommunityToolkit.Mvvm" />
+		<PackageReference Include="System.IO.Abstractions.TestingHelpers" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<Using Include="Microsoft.VisualStudio.TestTools.UnitTesting" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<Content Include="OneFuzzConfig.json">
+			<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+		</Content>
+	</ItemGroup>
+	
+</Project>

src/modules/Hosts/Hosts.FuzzTests/MSTestSettings.cs

@@ -0,0 +1,5 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+[assembly: Parallelize(Scope = ExecutionScope.MethodLevel)]

src/modules/Hosts/Hosts.FuzzTests/OneFuzzConfig.json

@@ -0,0 +1,178 @@
+{
+  "configVersion": 3,
+  "entries": [
+    {
+      "fuzzer": {
+        "$type": "libfuzzerDotNet",
+        "dll": "Hosts.FuzzTests.dll",
+        "class": "Hosts.FuzzTests.FuzzTests",
+        "method": "FuzzValidIPv4",
+        "FuzzingTargetBinaries": [
+          "PowerToys.Hosts.dll"
+        ]
+      },
+      "adoTemplate": {
+        // supply the values appropriate to your
+        // project, where bugs will be filed 
+        "org": "microsoft",
+        "project": "OS",
+        "AssignedTo": "mengyuanchen@microsoft.com",
+        "AreaPath": "OS\\Windows Client and Services\\WinPD\\DEEP-Developer Experience, Ecosystem and Partnerships\\SHINE\\PowerToys",
+        "IterationPath": "OS\\Future"
+      },
+      "jobNotificationEmail": "mengyuanchen@microsoft.com",
+      "skip": false,
+      "rebootAfterSetup": false,
+      "oneFuzzJobs": [
+        // at least one job is required
+        {
+          "projectName": "Hosts",
+          "targetName": "Hosts-dotnet-fuzzer-Ipv4"
+        }
+      ],
+      "jobDependencies": [
+        // this should contain, at minimum,
+        // the DLL and PDB files
+        // you will need to add any other files required
+        // (globs are supported)
+        "Hosts.FuzzTests.dll",
+        "Hosts.FuzzTests.pdb",
+        "Microsoft.Windows.SDK.NET.dll",
+        "WinRT.Runtime.dll"
+      ],
+      "SdlWorkItemId": 49911822
+    },
+    {
+      "fuzzer": {
+        "$type": "libfuzzerDotNet",
+        "dll": "Hosts.FuzzTests.dll",
+        "class": "Hosts.FuzzTests.FuzzTests",
+        "method": "FuzzValidIPv6",
+        "FuzzingTargetBinaries": [
+          "PowerToys.Hosts.dll"
+        ]
+      },
+      "adoTemplate": {
+        // supply the values appropriate to your
+        // project, where bugs will be filed 
+        "org": "microsoft",
+        "project": "OS",
+        "AssignedTo": "mengyuanchen@microsoft.com",
+        "AreaPath": "OS\\Windows Client and Services\\WinPD\\DEEP-Developer Experience, Ecosystem and Partnerships\\SHINE\\PowerToys",
+        "IterationPath": "OS\\Future"
+      },
+      "jobNotificationEmail": "mengyuanchen@microsoft.com",
+      "skip": false,
+      "rebootAfterSetup": false,
+      "oneFuzzJobs": [
+        // at least one job is required
+        {
+          "projectName": "Hosts",
+          "targetName": "Hosts-dotnet-fuzzer-Ipv6"
+        }
+      ],
+      "jobDependencies": [
+        // this should contain, at minimum,
+        // the DLL and PDB files
+        // you will need to add any other files required
+        // (globs are supported)
+        "Hosts.FuzzTests.dll",
+        "Hosts.FuzzTests.pdb",
+        "Microsoft.Windows.SDK.NET.dll",
+        "WinRT.Runtime.dll"
+      ],
+      "SdlWorkItemId": 49911822
+    },
+    {
+      "fuzzer": {
+        "$type": "libfuzzerDotNet",
+        "dll": "Hosts.FuzzTests.dll",
+        "class": "Hosts.FuzzTests.FuzzTests",
+        "method": "FuzzValidHosts",
+        "FuzzingTargetBinaries": [
+          "PowerToys.Hosts.dll"
+        ]
+      },
+      "adoTemplate": {
+        // supply the values appropriate to your
+        // project, where bugs will be filed 
+        "org": "microsoft",
+        "project": "OS",
+        "AssignedTo": "mengyuanchen@microsoft.com",
+        "AreaPath": "OS\\Windows Client and Services\\WinPD\\DEEP-Developer Experience, Ecosystem and Partnerships\\SHINE\\PowerToys",
+        "IterationPath": "OS\\Future"
+      },
+      "jobNotificationEmail": "mengyuanchen@microsoft.com",
+      "skip": false,
+      "rebootAfterSetup": false,
+      "oneFuzzJobs": [
+        // at least one job is required
+        {
+          "projectName": "Hosts",
+          "targetName": "Hosts-dotnet-fuzzer-hosts"
+        }
+      ],
+      "jobDependencies": [
+        // this should contain, at minimum,
+        // the DLL and PDB files
+        // you will need to add any other files required
+        // (globs are supported)
+        "Hosts.FuzzTests.dll",
+        "Hosts.FuzzTests.pdb",
+        "Microsoft.Windows.SDK.NET.dll",
+        "WinRT.Runtime.dll"
+      ],
+      "SdlWorkItemId": 49911822
+    },
+    {
+      "fuzzer": {
+        "$type": "libfuzzerDotNet",
+        "dll": "Hosts.FuzzTests.dll",
+        "class": "Hosts.FuzzTests.FuzzTests",
+        "method": "FuzzWriteAsync",
+        "FuzzingTargetBinaries": [
+          "PowerToys.Hosts.dll"
+        ]
+      },
+      "adoTemplate": {
+        // supply the values appropriate to your
+        // project, where bugs will be filed 
+        "org": "microsoft",
+        "project": "OS",
+        "AssignedTo": "mengyuanchen@microsoft.com",
+        "AreaPath": "OS\\Windows Client and Services\\WinPD\\DEEP-Developer Experience, Ecosystem and Partnerships\\SHINE\\PowerToys",
+        "IterationPath": "OS\\Future"
+      },
+      "jobNotificationEmail": "mengyuanchen@microsoft.com",
+      "skip": false,
+      "rebootAfterSetup": false,
+      "oneFuzzJobs": [
+        // at least one job is required
+        {
+          "projectName": "Hosts",
+          "targetName": "Hosts-dotnet-fuzzer-WriteAsync"
+        }
+      ],
+      "jobDependencies": [
+        // this should contain, at minimum,
+        // the DLL and PDB files
+        // you will need to add any other files required
+        // (globs are supported)
+        "Hosts.FuzzTests.dll",
+        "Hosts.FuzzTests.pdb",
+        "Microsoft.Windows.SDK.NET.dll",
+        "WinRT.Runtime.dll",
+        "Moq.dll",
+        "testhost.dll",
+        "Castle.Core.dll",
+        "System.IO.Abstractions.dll",
+        "CommunityToolkit.Mvvm.dll",
+        "System.IO.Abstractions.TestingHelpers.dll",
+        "TestableIO.System.IO.Abstractions.dll",
+        "TestableIO.System.IO.Abstractions.TestingHelpers.dll",
+        "TestableIO.System.IO.Abstractions.Wrappers.dll"
+      ],
+      "SdlWorkItemId": 49911822
+    }
+  ]
+}

src/modules/Hosts/Hosts.UITests/HostModuleTests.cs

@@ -0,0 +1,108 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Threading.Tasks;
+using Microsoft.PowerToys.UITest;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Hosts.UITests
+{
+    [TestClass]
+    public class HostModuleTests : UITestBase
+    {
+        public HostModuleTests()
+            : base(PowerToysModule.Hosts)
+        {
+        }
+
+        /// <summary>
+        /// Test if Empty-view is shown when no entries are present.
+        /// And 'Add an entry' button from Empty-view is functional.
+        /// </summary>
+        [TestMethod]
+        public void TestEmptyView()
+        {
+            this.CloseWarningDialog();
+            this.RemoveAllEntries();
+
+            // 'Add an entry' button (only show-up when list is empty) should be visible
+            Assert.IsTrue(this.FindAll<Button>(By.Name("Add an entry")).Count == 1, "'Add an entry' button should be visible in the empty view");
+
+            // Click 'Add an entry' from empty-view for adding Host override rule
+            this.Find<Button>(By.Name("Add an entry")).Click();
+
+            this.AddEntry("192.168.0.1", "localhost", false, false);
+
+            // Should have one row now and not more empty view
+            Assert.IsTrue(this.FindAll<Button>(By.Name("Delete")).Count == 1, "Should have one row now");
+            Assert.IsTrue(this.FindAll<Button>(By.Name("Add an entry")).Count == 0, "'Add an entry' button should be invisible if not empty view");
+        }
+
+        /// <summary>
+        /// Test if 'New entry' button is functional
+        /// </summary>
+        [TestMethod]
+        public void TestAddingEntry()
+        {
+            this.CloseWarningDialog();
+            this.RemoveAllEntries();
+
+            Assert.IsTrue(this.FindAll<Button>(By.Name("Delete")).Count == 0, "Should have no row after removing all");
+
+            this.AddEntry("192.168.0.1", "localhost", true);
+
+            Assert.IsTrue(this.FindAll<Button>(By.Name("Delete")).Count == 1, "Should have one row now");
+        }
+
+        private void AddEntry(string ip, string host, bool active = true, bool clickAddEntryButton = true)
+        {
+            if (clickAddEntryButton)
+            {
+                // Click 'Add an entry' for adding Host override rule
+                this.Find<Button>(By.Name("New entry")).Click();
+            }
+
+            // Adding a new host override localhost -> 192.168.0.1
+            Assert.IsFalse(this.Find<Button>(By.Name("Add")).Enabled, "Add button should be Disabled by default");
+
+            Assert.IsTrue(this.Find<TextBox>(By.Name("Address")).SetText(ip, false).Text == ip);
+            Assert.IsTrue(this.Find<TextBox>(By.Name("Hosts")).SetText(host, false).Text == host);
+
+            this.Find<ToggleSwitch>(By.Name("Active")).Toggle(active);
+
+            Assert.IsTrue(this.Find<Button>(By.Name("Add")).Enabled, "Add button should be Enabled after providing valid inputs");
+
+            // Add the entry
+            this.Find<Button>(By.Name("Add")).Click();
+
+            // 0.5 second delay after adding an entry
+            Task.Delay(500).Wait();
+        }
+
+        private void CloseWarningDialog()
+        {
+            // Find 'Accept' button which come in 'Warning' dialog
+            if (this.FindAll<Window>(By.Name("Warning")).Count > 0 &&
+                this.FindAll<Button>(By.Name("Accept")).Count > 0)
+            {
+                // Hide Warning dialog if any
+                this.Find<Button>(By.Name("Accept")).Click();
+            }
+        }
+
+        private void RemoveAllEntries()
+        {
+            // Delete all existing host-override rules
+            foreach (var deleteBtn in this.FindAll<Button>(By.Name("Delete")))
+            {
+                deleteBtn.Click();
+                this.Find<Button>(By.Name("Yes")).Click();
+            }
+
+            // Should have no row left, and no more delete button
+            Assert.IsTrue(this.FindAll<Button>(By.Name("Delete")).Count == 0);
+        }
+    }
+}

src/modules/Hosts/Hosts.UITests/Hosts.UITests.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- Look at Directory.Build.props in root for common stuff as well -->
+  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+
+  <PropertyGroup>
+    <ProjectGuid>{4E0AE3A4-2EE0-44D7-A2D0-8769977254A0}</ProjectGuid>
+      <RootNamespace>PowerToys.Hosts.UITests</RootNamespace>
+      <AssemblyName>PowerToys.Hosts.UITests</AssemblyName>
+      <IsPackable>false</IsPackable>
+      <IsTestProject>true</IsTestProject>
+      <Nullable>enable</Nullable>
+      <OutputType>Library</OutputType>
+
+      <!-- This is a UI test, so don't run as part of MSBuild -->
+      <RunVSTest>false</RunVSTest>
+    </PropertyGroup>
+    <PropertyGroup>
+      <OutputPath>$(SolutionDir)$(Platform)\$(Configuration)\tests\Hosts.UITests\</OutputPath>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="MSTest" />
+      <ProjectReference Include="..\..\..\common\UITestAutomation\UITestAutomation.csproj" />
+    </ItemGroup>
+</Project>

src/modules/MouseUtils/MouseHighlighter/MouseHighlighter.cpp

@@ -233,6 +233,12 @@ void Highlighter::ClearDrawingPoint(MouseButton _button)
 {
     winrt::Windows::UI::Composition::CompositionSpriteShape circleShape{ nullptr };
 
+    if (nullptr == m_alwaysPointer)
+    {
+        // Guard against alwaysPointer not being initialized.
+        return;
+    }
+
     // always
     circleShape = m_alwaysPointer;
 
@@ -265,6 +271,11 @@ LRESULT CALLBACK Highlighter::MouseHookProc(int nCode, WPARAM wParam, LPARAM lPa
                     // Clear AlwaysPointer only when it's enabled and RightPointer is not active
                     instance->ClearDrawingPoint(MouseButton::None);
                 }
+                if (instance->m_leftButtonPressed)
+                {
+                    // There might be a stray point from the user releasing the mouse button on an elevated window, which wasn't caught by us.
+                    instance->StartDrawingPointFading(MouseButton::Left);
+                }
                 instance->AddDrawingPoint(MouseButton::Left);
                 instance->m_leftButtonPressed = true;
                 // start a timer for the scenario, when the user clicks a pinned window which has no focus.
@@ -284,6 +295,11 @@ LRESULT CALLBACK Highlighter::MouseHookProc(int nCode, WPARAM wParam, LPARAM lPa
                     // Clear AlwaysPointer only when it's enabled and LeftPointer is not active
                     instance->ClearDrawingPoint(MouseButton::None);
                 }
+                if (instance->m_rightButtonPressed)
+                {
+                    // There might be a stray point from the user releasing the mouse button on an elevated window, which wasn't caught by us.
+                    instance->StartDrawingPointFading(MouseButton::Right);
+                }
                 instance->AddDrawingPoint(MouseButton::Right);
                 instance->m_rightButtonPressed = true;
                 // same as for the left button, start a timer for reposition ourselves to topmost position

src/modules/MouseWithoutBorders/App/Class/Common.Clipboard.cs

@@ -431,7 +431,7 @@ namespace MouseWithoutBorders
                 if (!IsConnectedByAClientSocketTo(remoteMachine))
                 {
                     Logger.Log($"No potential inbound connection from {MachineName} to {remoteMachine}, ask for a push back instead.");
-                    ID machineId = MachinePool.ResolveID(remoteMachine);
+                    ID machineId = MachineStuff.MachinePool.ResolveID(remoteMachine);
 
                     if (machineId != ID.NONE)
                     {
@@ -840,7 +840,7 @@ namespace MouseWithoutBorders
 
                         Logger.LogDebug($"{nameof(ShakeHand)}: Connection from {name}:{package.Src}");
 
-                        if (Common.MachinePool.ResolveID(name) == package.Src && Common.IsConnectedTo(package.Src))
+                        if (MachineStuff.MachinePool.ResolveID(name) == package.Src && Common.IsConnectedTo(package.Src))
                         {
                             clientPushData = package.Type == PackageType.ClipboardPush;
                             postAction = package.PostAction;

src/modules/MouseWithoutBorders/App/Class/Common.DragDrop.cs

@@ -1,409 +0,0 @@
-// Copyright (c) Microsoft Corporation
-// The Microsoft Corporation licenses this file to you under the MIT license.
-// See the LICENSE file in the project root for more information.
-
-using System;
-using System.Drawing;
-using System.Globalization;
-using System.IO;
-using System.Threading;
-using System.Windows.Forms;
-
-using Microsoft.PowerToys.Telemetry;
-
-// <summary>
-//     Drag/Drop implementation.
-// </summary>
-// <history>
-//     2008 created by Truong Do (ductdo).
-//     2009-... modified by Truong Do (TruongDo).
-//     2023- Included in PowerToys.
-// </history>
-using MouseWithoutBorders.Class;
-using MouseWithoutBorders.Core;
-
-using Thread = MouseWithoutBorders.Core.Thread;
-
-namespace MouseWithoutBorders
-{
-    /* Common.DragDrop.cs
-     * Drag&Drop is one complicated implementation of the tool with some tricks.
-     *
-     * SEQUENCE OF EVENTS:
-     * DragDropStep01: MachineX: Remember mouse down state since it could be a start of a dragging
-     * DragDropStep02: MachineY: Send an message to the MachineX to ask it to check if it is
-     *                           doing drag/drop
-     * DragDropStep03: MachineX: Got explorerDragDrop, send WM_CHECK_EXPLORER_DRAG_DROP to its mainForm
-     * DragDropStep04: MachineX: Show Mouse Without Borders Helper form at mouse cursor to get DragEnter event.
-     * DragDropStepXX: MachineX: Mouse Without Borders Helper: Called by DragEnter, check if dragging a single file,
-     *                           remember the file (set as its window caption)
-     * DragDropStep05: MachineX: Get the file name from Mouse Without Borders Helper, hide Mouse Without Borders Helper window
-     * DragDropStep06: MachineX: Broadcast a message saying that it has some drag file.
-     * DragDropStep08: MachineY: Got ClipboardDragDrop, isDropping set, get the MachineX name from the package.
-     * DragDropStep09: MachineY: Since isDropping is true, show up the drop form (looks like an icon).
-     * DragDropStep10: MachineY: MouseUp, set isDropping to false, hide the drop "icon" and get data.
-     * DragDropStep11: MachineX: Mouse move back without drop event, cancelling drag/dop
-     *                           SendClipboardBeatDragDropEnd
-     * DragDropStep12: MachineY: Hide the drop "icon" when received ClipboardDragDropEnd.
-     *
-     * FROM VERSION 1.6.3: Drag/Drop is temporary removed, Drop action cannot be done from a lower integrity app to a higher one.
-     * We have to run a helper process...
-     * http://forums.microsoft.com/MSDN/ShowPost.aspx?PageIndex=1&SiteID=1&PageID=1&PostID=736086
-     *
-     * 2008.10.28: Trying to restore the Drag/Drop feature by adding the drag/drop helper process. Coming in version
-     * 1.6.5
-     * */
-
-    internal partial class Common
-    {
-        private static bool isDragging;
-
-        internal static bool IsDragging
-        {
-            get => Common.isDragging;
-            set => Common.isDragging = value;
-        }
-
-        internal static void DragDropStep01(int wParam)
-        {
-            if (!Setting.Values.TransferFile)
-            {
-                return;
-            }
-
-            if (wParam == WM_LBUTTONDOWN)
-            {
-                MouseDown = true;
-                DragMachine = desMachineID;
-                dropMachineID = ID.NONE;
-                Logger.LogDebug("DragDropStep01: MouseDown");
-            }
-            else if (wParam == WM_LBUTTONUP)
-            {
-                MouseDown = false;
-                Logger.LogDebug("DragDropStep01: MouseUp");
-            }
-
-            if (wParam == WM_RBUTTONUP && IsDropping)
-            {
-                IsDropping = false;
-                LastIDWithClipboardData = ID.NONE;
-            }
-        }
-
-        internal static void DragDropStep02()
-        {
-            if (desMachineID == MachineID)
-            {
-                Logger.LogDebug("DragDropStep02: SendCheckExplorerDragDrop sent to myself");
-                DoSomethingInUIThread(() =>
-                {
-                    _ = NativeMethods.PostMessage(MainForm.Handle, NativeMethods.WM_CHECK_EXPLORER_DRAG_DROP, (IntPtr)0, (IntPtr)0);
-                });
-            }
-            else
-            {
-                SendCheckExplorerDragDrop();
-                Logger.LogDebug("DragDropStep02: SendCheckExplorerDragDrop sent");
-            }
-        }
-
-        internal static void DragDropStep03(DATA package)
-        {
-            if (RunOnLogonDesktop || RunOnScrSaverDesktop)
-            {
-                return;
-            }
-
-            if (package.Des == MachineID || package.Des == ID.ALL)
-            {
-                Logger.LogDebug("DragDropStep03: ExplorerDragDrop Received.");
-                dropMachineID = package.Src; // Drop machine is the machine that sent ExplorerDragDrop
-                if (MouseDown || IsDropping)
-                {
-                    Logger.LogDebug("DragDropStep03: Mouse is down, check if dragging...sending WM_CHECK_EXPLORER_DRAG_DROP to myself...");
-                    DoSomethingInUIThread(() =>
-                    {
-                        _ = NativeMethods.PostMessage(MainForm.Handle, NativeMethods.WM_CHECK_EXPLORER_DRAG_DROP, (IntPtr)0, (IntPtr)0);
-                    });
-                }
-            }
-        }
-
-        private static int dragDropStep05ExCalledByIpc;
-
-        internal static void DragDropStep04()
-        {
-            if (!IsDropping)
-            {
-                IntPtr h = (IntPtr)NativeMethods.FindWindow(null, Common.HELPER_FORM_TEXT);
-                if (h.ToInt32() > 0)
-                {
-                    _ = Interlocked.Exchange(ref dragDropStep05ExCalledByIpc, 0);
-
-                    MainForm.Hide();
-                    MainFormVisible = false;
-
-                    Point p = default;
-
-                    // NativeMethods.SetWindowText(h, "");
-                    _ = NativeMethods.SetWindowPos(h, NativeMethods.HWND_TOPMOST, 0, 0, 0, 0, NativeMethods.SWP_SHOWWINDOW);
-
-                    for (int i = -10; i < 10; i++)
-                    {
-                        if (dragDropStep05ExCalledByIpc > 0)
-                        {
-                            Logger.LogDebug("DragDropStep04: DragDropStep05ExCalledByIpc.");
-                            break;
-                        }
-
-                        _ = NativeMethods.GetCursorPos(ref p);
-                        Logger.LogDebug("DragDropStep04: Moving Mouse Without Borders Helper to (" + p.X.ToString(CultureInfo.CurrentCulture) + ", " + p.Y.ToString(CultureInfo.CurrentCulture) + ")");
-                        _ = NativeMethods.SetWindowPos(h, NativeMethods.HWND_TOPMOST, p.X - 100 + i, p.Y - 100 + i, 200, 200, 0);
-                        _ = NativeMethods.SendMessage(h, 0x000F, IntPtr.Zero, IntPtr.Zero); // WM_PAINT
-                        Thread.Sleep(20);
-                        Application.DoEvents();
-
-                        // if (GetText(h).Length > 1) break;
-                    }
-                }
-                else
-                {
-                    Logger.LogDebug("DragDropStep04: Mouse without Borders Helper not found!");
-                }
-            }
-            else
-            {
-                Logger.LogDebug("DragDropStep04: IsDropping == true, skip checking");
-            }
-
-            Logger.LogDebug("DragDropStep04: Got WM_CHECK_EXPLORER_DRAG_DROP, done with processing jump to DragDropStep05...");
-        }
-
-        internal static void DragDropStep05Ex(string dragFileName)
-        {
-            Logger.LogDebug("DragDropStep05 called.");
-
-            _ = Interlocked.Exchange(ref dragDropStep05ExCalledByIpc, 1);
-
-            if (RunOnLogonDesktop || RunOnScrSaverDesktop)
-            {
-                return;
-            }
-
-            if (!IsDropping)
-            {
-                _ = Common.ImpersonateLoggedOnUserAndDoSomething(() =>
-                {
-                    if (!string.IsNullOrEmpty(dragFileName) && (File.Exists(dragFileName) || Directory.Exists(dragFileName)))
-                    {
-                        Common.LastDragDropFile = dragFileName;
-                        /*
-                         * possibleDropMachineID is used as desID sent in DragDropStep06();
-                         * */
-                        if (dropMachineID == ID.NONE)
-                        {
-                            dropMachineID = newDesMachineID;
-                        }
-
-                        DragDropStep06();
-                        Logger.LogDebug("DragDropStep05: File dragging: " + dragFileName);
-                        _ = NativeMethods.PostMessage(MainForm.Handle, NativeMethods.WM_HIDE_DD_HELPER, (IntPtr)1, (IntPtr)0);
-                    }
-                    else
-                    {
-                        Logger.LogDebug("DragDropStep05: File not found: [" + dragFileName + "]");
-                        _ = NativeMethods.PostMessage(MainForm.Handle, NativeMethods.WM_HIDE_DD_HELPER, (IntPtr)0, (IntPtr)0);
-                    }
-
-                    Logger.LogDebug("DragDropStep05: WM_HIDE_DDHelper sent");
-                });
-            }
-            else
-            {
-                Logger.LogDebug("DragDropStep05: IsDropping == true, change drop machine...");
-                IsDropping = false;
-                MainFormVisible = true; // WM_HIDE_DRAG_DROP
-                SendDropBegin(); // To dropMachineID set in DragDropStep03
-            }
-
-            MouseDown = false;
-        }
-
-        internal static void DragDropStep06()
-        {
-            IsDragging = true;
-            Logger.LogDebug("DragDropStep06: SendClipboardBeatDragDrop");
-            SendClipboardBeatDragDrop();
-            SendDropBegin();
-        }
-
-        internal static void DragDropStep08(DATA package)
-        {
-            Receiver.GetNameOfMachineWithClipboardData(package);
-            Logger.LogDebug("DragDropStep08: ClipboardDragDrop Received. machine with drag file was set");
-        }
-
-        internal static void DragDropStep08_2(DATA package)
-        {
-            if (package.Des == MachineID && !RunOnLogonDesktop && !RunOnScrSaverDesktop)
-            {
-                IsDropping = true;
-                dropMachineID = MachineID;
-                Logger.LogDebug("DragDropStep08_2: ClipboardDragDropOperation Received. IsDropping set");
-            }
-        }
-
-        internal static void DragDropStep09(int wParam)
-        {
-            if (wParam == WM_MOUSEMOVE && IsDropping)
-            {
-                // Show/Move form
-                DoSomethingInUIThread(() =>
-                {
-                    _ = NativeMethods.PostMessage(MainForm.Handle, NativeMethods.WM_SHOW_DRAG_DROP, (IntPtr)0, (IntPtr)0);
-                });
-            }
-            else if (wParam == WM_LBUTTONUP && (IsDropping || IsDragging))
-            {
-                if (IsDropping)
-                {
-                    // Hide form, get data
-                    DragDropStep10();
-                }
-                else
-                {
-                    IsDragging = false;
-                    LastIDWithClipboardData = ID.NONE;
-                }
-            }
-        }
-
-        internal static void DragDropStep10()
-        {
-            Logger.LogDebug("DragDropStep10: Hide the form and get data...");
-            IsDropping = false;
-            IsDragging = false;
-            LastIDWithClipboardData = ID.NONE;
-
-            DoSomethingInUIThread(() =>
-            {
-                _ = NativeMethods.PostMessage(MainForm.Handle, NativeMethods.WM_HIDE_DRAG_DROP, (IntPtr)0, (IntPtr)0);
-            });
-
-            PowerToysTelemetry.Log.WriteEvent(new MouseWithoutBorders.Telemetry.MouseWithoutBordersDragAndDropEvent());
-            GetRemoteClipboard("desktop");
-        }
-
-        internal static void DragDropStep11()
-        {
-            Logger.LogDebug("DragDropStep11: Mouse drag coming back, canceling drag/drop");
-            SendClipboardBeatDragDropEnd();
-            IsDropping = false;
-            IsDragging = false;
-            DragMachine = (ID)1;
-            LastIDWithClipboardData = ID.NONE;
-            LastDragDropFile = null;
-            MouseDown = false;
-        }
-
-        internal static void DragDropStep12()
-        {
-            Logger.LogDebug("DragDropStep12: ClipboardDragDropEnd received");
-            IsDropping = false;
-            LastIDWithClipboardData = ID.NONE;
-
-            DoSomethingInUIThread(() =>
-            {
-                _ = NativeMethods.PostMessage(MainForm.Handle, NativeMethods.WM_HIDE_DRAG_DROP, (IntPtr)0, (IntPtr)0);
-            });
-        }
-
-        internal static void SendCheckExplorerDragDrop()
-        {
-            DATA package = new();
-            package.Type = PackageType.ExplorerDragDrop;
-
-            /*
-             * package.src = newDesMachineID:
-             * sent from the master machine but the src must be the
-             * new des machine since the previous des machine will get this and set
-             * to possibleDropMachineID in DragDropStep3()
-             * */
-            package.Src = newDesMachineID;
-
-            package.Des = desMachineID;
-            package.MachineName = MachineName;
-
-            SkSend(package, null, false);
-        }
-
-        private static void ChangeDropMachine()
-        {
-            // desMachineID = current drop machine
-            // newDesMachineID = new drop machine
-
-            // 1. Cancelling dropping in current drop machine
-            if (dropMachineID == MachineID)
-            {
-                // Drag/Drop coming through me
-                IsDropping = false;
-            }
-            else
-            {
-                // Drag/Drop coming back
-                SendClipboardBeatDragDropEnd();
-            }
-
-            // 2. SendClipboardBeatDragDrop to new drop machine
-            // new drop machine is not me
-            if (newDesMachineID != MachineID)
-            {
-                dropMachineID = newDesMachineID;
-                SendDropBegin();
-            }
-
-            // New drop machine is me
-            else
-            {
-                IsDropping = true;
-            }
-        }
-
-        internal static void SendClipboardBeatDragDrop()
-        {
-            SendPackage(ID.ALL, PackageType.ClipboardDragDrop);
-        }
-
-        internal static void SendDropBegin()
-        {
-            Logger.LogDebug("SendDropBegin...");
-            SendPackage(dropMachineID, PackageType.ClipboardDragDropOperation);
-        }
-
-        internal static void SendClipboardBeatDragDropEnd()
-        {
-            if (desMachineID != MachineID)
-            {
-                SendPackage(desMachineID, PackageType.ClipboardDragDropEnd);
-            }
-        }
-
-        private static bool isDropping;
-        private static ID dragMachine;
-
-        internal static ID DragMachine
-        {
-            get => Common.dragMachine;
-            set => Common.dragMachine = value;
-        }
-
-        internal static bool IsDropping
-        {
-            get => Common.isDropping;
-            set => Common.isDropping = value;
-        }
-
-        internal static bool MouseDown { get; set; }
-    }
-}

src/modules/MouseWithoutBorders/App/Class/Common.Event.cs

@@ -72,7 +72,7 @@ namespace MouseWithoutBorders
 
                 if (switchByMouseEnabled && Sk != null && (DesMachineID == MachineID || !Setting.Values.MoveMouseRelatively) && e.dwFlags == WM_MOUSEMOVE)
                 {
-                    Point p = MoveToMyNeighbourIfNeeded(e.X, e.Y, desMachineID);
+                    Point p = MachineStuff.MoveToMyNeighbourIfNeeded(e.X, e.Y, MachineStuff.desMachineID);
 
                     if (!p.IsEmpty)
                     {
@@ -81,20 +81,20 @@ namespace MouseWithoutBorders
                         Logger.LogDebug(string.Format(
                             CultureInfo.CurrentCulture,
                             "***** Host Machine: newDesMachineIdEx set = [{0}]. Mouse is now at ({1},{2})",
-                            newDesMachineIdEx,
+                            MachineStuff.newDesMachineIdEx,
                             e.X,
                             e.Y));
 
                         myLastX = e.X;
                         myLastY = e.Y;
 
-                        PrepareToSwitchToMachine(newDesMachineIdEx, p);
+                        PrepareToSwitchToMachine(MachineStuff.newDesMachineIdEx, p);
                     }
                 }
 
-                if (desMachineID != MachineID && SwitchLocation.Count <= 0)
+                if (MachineStuff.desMachineID != MachineID && MachineStuff.SwitchLocation.Count <= 0)
                 {
-                    MousePackage.Des = desMachineID;
+                    MousePackage.Des = MachineStuff.desMachineID;
                     MousePackage.Type = PackageType.Mouse;
                     MousePackage.Md.dwFlags = e.dwFlags;
                     MousePackage.Md.WheelDelta = e.WheelDelta;
@@ -107,8 +107,8 @@ namespace MouseWithoutBorders
                     }
                     else
                     {
-                        MousePackage.Md.X = (e.X - primaryScreenBounds.Left) * 65535 / screenWidth;
-                        MousePackage.Md.Y = (e.Y - primaryScreenBounds.Top) * 65535 / screenHeight;
+                        MousePackage.Md.X = (e.X - MachineStuff.primaryScreenBounds.Left) * 65535 / screenWidth;
+                        MousePackage.Md.Y = (e.Y - MachineStuff.primaryScreenBounds.Top) * 65535 / screenHeight;
                     }
 
                     SkSend(MousePackage, null, false);
@@ -156,15 +156,15 @@ namespace MouseWithoutBorders
         {
             Logger.LogDebug($"PrepareToSwitchToMachine: newDesMachineID = {newDesMachineID}, desMachineXY = {desMachineXY}");
 
-            if (((GetTick() - lastJump < 100) && (GetTick() - lastJump > 0)) || desMachineID == ID.ALL)
+            if (((GetTick() - MachineStuff.lastJump < 100) && (GetTick() - MachineStuff.lastJump > 0)) || MachineStuff.desMachineID == ID.ALL)
             {
                 Logger.LogDebug("PrepareToSwitchToMachine: lastJump");
                 return;
             }
 
-            lastJump = GetTick();
+            MachineStuff.lastJump = GetTick();
 
-            string newDesMachineName = NameFromID(newDesMachineID);
+            string newDesMachineName = MachineStuff.NameFromID(newDesMachineID);
 
             if (!IsConnectedTo(newDesMachineID))
             {// Connection lost, cancel switching
@@ -174,46 +174,46 @@ namespace MouseWithoutBorders
             }
             else
             {
-                Common.newDesMachineID = newDesMachineID;
-                SwitchLocation.X = desMachineXY.X;
-                SwitchLocation.Y = desMachineXY.Y;
-                SwitchLocation.ResetCount();
+                MachineStuff.newDesMachineID = newDesMachineID;
+                MachineStuff.SwitchLocation.X = desMachineXY.X;
+                MachineStuff.SwitchLocation.Y = desMachineXY.Y;
+                MachineStuff.SwitchLocation.ResetCount();
                 _ = EvSwitch.Set();
 
                 // PostMessage(mainForm.Handle, WM_SWITCH, IntPtr.Zero, IntPtr.Zero);
-                if (newDesMachineID != DragMachine)
+                if (newDesMachineID != DragDrop.DragMachine)
                 {
-                    if (!IsDragging && !IsDropping)
+                    if (!DragDrop.IsDragging && !DragDrop.IsDropping)
                     {
-                        if (MouseDown && !RunOnLogonDesktop && !RunOnScrSaverDesktop)
+                        if (DragDrop.MouseDown && !RunOnLogonDesktop && !RunOnScrSaverDesktop)
                         {
-                            DragDropStep02();
+                            DragDrop.DragDropStep02();
                         }
                     }
-                    else if (DragMachine != (ID)1)
+                    else if (DragDrop.DragMachine != (ID)1)
                     {
-                        ChangeDropMachine();
+                        DragDrop.ChangeDropMachine();
                     }
                 }
                 else
                 {
-                    DragDropStep11();
+                    DragDrop.DragDropStep11();
                 }
 
                 // Change des machine
-                if (desMachineID != newDesMachineID)
+                if (MachineStuff.desMachineID != newDesMachineID)
                 {
                     Logger.LogDebug("MouseEvent: Switching to new machine:" + newDesMachineName);
 
                     // Ask current machine to hide the Mouse cursor
-                    if (newDesMachineID != ID.ALL && desMachineID != MachineID)
+                    if (newDesMachineID != ID.ALL && MachineStuff.desMachineID != MachineID)
                     {
-                        SendPackage(desMachineID, PackageType.HideMouse);
+                        SendPackage(MachineStuff.desMachineID, PackageType.HideMouse);
                     }
 
                     DesMachineID = newDesMachineID;
 
-                    if (desMachineID == MachineID)
+                    if (MachineStuff.desMachineID == MachineID)
                     {
                         if (GetTick() - clipboardCopiedTime < BIG_CLIPBOARD_DATA_TIMEOUT)
                         {
@@ -224,7 +224,7 @@ namespace MouseWithoutBorders
                     else
                     {
                         // Ask the new active machine to get clipboard data (if the data is too big)
-                        SendPackage(desMachineID, PackageType.MachineSwitched);
+                        SendPackage(MachineStuff.desMachineID, PackageType.MachineSwitched);
                     }
 
                     _ = Interlocked.Increment(ref switchCount);
@@ -249,15 +249,15 @@ namespace MouseWithoutBorders
             try
             {
                 PaintCount = 0;
-                if (desMachineID != newDesMachineID)
+                if (MachineStuff.desMachineID != MachineStuff.newDesMachineID)
                 {
                     Logger.LogDebug("KeybdEvent: Switching to new machine...");
-                    DesMachineID = newDesMachineID;
+                    DesMachineID = MachineStuff.newDesMachineID;
                 }
 
-                if (desMachineID != MachineID)
+                if (MachineStuff.desMachineID != MachineID)
                 {
-                    KeybdPackage.Des = desMachineID;
+                    KeybdPackage.Des = MachineStuff.desMachineID;
                     KeybdPackage.Type = PackageType.Keyboard;
                     KeybdPackage.Kd = e;
                     KeybdPackage.DateTime = GetTick();

src/modules/MouseWithoutBorders/App/Class/Common.Helper.cs

@@ -9,6 +9,7 @@ using System.Drawing;
 using System.Globalization;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Security.Principal;
 using System.Windows.Forms;
 
@@ -87,35 +88,35 @@ namespace MouseWithoutBorders
                         break;
                     }
 
-                    if (Common.NewDesMachineID != Common.MachineID && Common.NewDesMachineID != ID.ALL)
+                    if (MachineStuff.NewDesMachineID != Common.MachineID && MachineStuff.NewDesMachineID != ID.ALL)
                     {
                         HideMouseCursor(false);
                         Common.MainFormDotEx(true);
                     }
                     else
                     {
-                        if (Common.SwitchLocation.Count > 0)
+                        if (MachineStuff.SwitchLocation.Count > 0)
                         {
-                            Common.SwitchLocation.Count--;
+                            MachineStuff.SwitchLocation.Count--;
 
                             // When we want to move mouse by pixels, we add 300k to x and y (search for XY_BY_PIXEL for other related code).
-                            Logger.LogDebug($"+++++ Moving mouse to {Common.SwitchLocation.X}, {Common.SwitchLocation.Y}");
+                            Logger.LogDebug($"+++++ Moving mouse to {MachineStuff.SwitchLocation.X}, {MachineStuff.SwitchLocation.Y}");
 
                             // MaxXY = 65535 so 100k is safe.
-                            if (Common.SwitchLocation.X > XY_BY_PIXEL - 100000 || Common.SwitchLocation.Y > XY_BY_PIXEL - 100000)
+                            if (MachineStuff.SwitchLocation.X > XY_BY_PIXEL - 100000 || MachineStuff.SwitchLocation.Y > XY_BY_PIXEL - 100000)
                             {
-                                InputSimulation.MoveMouse(Common.SwitchLocation.X - XY_BY_PIXEL, Common.SwitchLocation.Y - XY_BY_PIXEL);
+                                InputSimulation.MoveMouse(MachineStuff.SwitchLocation.X - XY_BY_PIXEL, MachineStuff.SwitchLocation.Y - XY_BY_PIXEL);
                             }
                             else
                             {
-                                InputSimulation.MoveMouseEx(Common.SwitchLocation.X, Common.SwitchLocation.Y);
+                                InputSimulation.MoveMouseEx(MachineStuff.SwitchLocation.X, MachineStuff.SwitchLocation.Y);
                             }
 
                             Common.MainFormDot();
                         }
                     }
 
-                    if (Common.NewDesMachineID == Common.MachineID)
+                    if (MachineStuff.NewDesMachineID == Common.MachineID)
                     {
                         ReleaseAllKeys();
                     }
@@ -136,8 +137,8 @@ namespace MouseWithoutBorders
 
             if (!Common.RunOnLogonDesktop && !Common.RunOnScrSaverDesktop)
             {
-                int left = Common.PrimaryScreenBounds.Left + ((Common.PrimaryScreenBounds.Right - Common.PrimaryScreenBounds.Left) / 2) - 1;
-                int top = Setting.Values.HideMouse ? 3 : Common.PrimaryScreenBounds.Top + ((Common.PrimaryScreenBounds.Bottom - Common.PrimaryScreenBounds.Top) / 2);
+                int left = MachineStuff.PrimaryScreenBounds.Left + ((MachineStuff.PrimaryScreenBounds.Right - MachineStuff.PrimaryScreenBounds.Left) / 2) - 1;
+                int top = Setting.Values.HideMouse ? 3 : MachineStuff.PrimaryScreenBounds.Top + ((MachineStuff.PrimaryScreenBounds.Bottom - MachineStuff.PrimaryScreenBounds.Top) / 2);
 
                 Common.MainFormVisible = true;
 
@@ -197,8 +198,8 @@ namespace MouseWithoutBorders
             DoSomethingInUIThread(
                 () =>
             {
-                MainForm.Left = Common.PrimaryScreenBounds.Left + ((Common.PrimaryScreenBounds.Right - Common.PrimaryScreenBounds.Left) / 2) - 2;
-                MainForm.Top = Setting.Values.HideMouse ? 3 : Common.PrimaryScreenBounds.Top + ((Common.PrimaryScreenBounds.Bottom - Common.PrimaryScreenBounds.Top) / 2) - 1;
+                MainForm.Left = MachineStuff.PrimaryScreenBounds.Left + ((MachineStuff.PrimaryScreenBounds.Right - MachineStuff.PrimaryScreenBounds.Left) / 2) - 2;
+                MainForm.Top = Setting.Values.HideMouse ? 3 : MachineStuff.PrimaryScreenBounds.Top + ((MachineStuff.PrimaryScreenBounds.Bottom - MachineStuff.PrimaryScreenBounds.Top) / 2) - 1;
                 MainForm.Width = 3;
                 MainForm.Height = 3;
                 MainForm.Opacity = 0.11D;
@@ -229,8 +230,8 @@ namespace MouseWithoutBorders
                 {
                     _ = Common.SendMessageToHelper(0x408, IntPtr.Zero, IntPtr.Zero, false);
 
-                    MainForm.Left = Common.PrimaryScreenBounds.Left + ((Common.PrimaryScreenBounds.Right - Common.PrimaryScreenBounds.Left) / 2) - 1;
-                    MainForm.Top = Setting.Values.HideMouse ? 3 : Common.PrimaryScreenBounds.Top + ((Common.PrimaryScreenBounds.Bottom - Common.PrimaryScreenBounds.Top) / 2);
+                    MainForm.Left = MachineStuff.PrimaryScreenBounds.Left + ((MachineStuff.PrimaryScreenBounds.Right - MachineStuff.PrimaryScreenBounds.Left) / 2) - 1;
+                    MainForm.Top = Setting.Values.HideMouse ? 3 : MachineStuff.PrimaryScreenBounds.Top + ((MachineStuff.PrimaryScreenBounds.Bottom - MachineStuff.PrimaryScreenBounds.Top) / 2);
                     MainForm.Width = 1;
                     MainForm.Height = 1;
                     MainForm.Opacity = 0.15;
@@ -380,7 +381,7 @@ namespace MouseWithoutBorders
             log += $"{Setting.Values.Username}/{GetDebugInfo(MyKey)}\r\n";
             log += $"{MachineName}/{MachineID}/{DesMachineID}\r\n";
             log += $"Id: {Setting.Values.DeviceId}\r\n";
-            log += $"Matrix: {string.Join(",", MachineMatrix)}\r\n";
+            log += $"Matrix: {string.Join(",", MachineStuff.MachineMatrix)}\r\n";
             log += $"McPool: {Setting.Values.MachinePoolString}\r\n";
 
             log += "\r\nOPTIONS:\r\n";
@@ -443,7 +444,31 @@ namespace MouseWithoutBorders
                 {
                     _ = Common.ImpersonateLoggedOnUserAndDoSomething(() =>
                     {
-                        Setting.Values.Username = WindowsIdentity.GetCurrent(true).Name;
+                        // See: https://stackoverflow.com/questions/19487541/how-to-get-windows-user-name-from-sessionid
+                        static string GetUsernameBySessionId(int sessionId)
+                        {
+                            string username = "SYSTEM";
+                            if (NativeMethods.WTSQuerySessionInformation(IntPtr.Zero, sessionId, NativeMethods.WTSInfoClass.WTSUserName, out nint buffer, out int strLen) && strLen > 1)
+                            {
+                                username = Marshal.PtrToStringAnsi(buffer);
+                                NativeMethods.WTSFreeMemory(buffer);
+
+                                if (NativeMethods.WTSQuerySessionInformation(IntPtr.Zero, sessionId, NativeMethods.WTSInfoClass.WTSDomainName, out buffer, out strLen) && strLen > 1)
+                                {
+                                    username = @$"{Marshal.PtrToStringAnsi(buffer)}\{username}";
+                                    NativeMethods.WTSFreeMemory(buffer);
+                                }
+                            }
+
+                            return username;
+                        }
+
+                        // The most direct way to fetch the username is WindowsIdentity.GetCurrent(true).Name
+                        // but GetUserName can run within an ExecutionContext.SuppressFlow block, which creates issues
+                        // with WindowsIdentity.GetCurrent.
+                        // See: https://stackoverflow.com/questions/76998988/exception-when-using-executioncontext-suppressflow-in-net-7
+                        // So we use WTSQuerySessionInformation as a workaround.
+                        Setting.Values.Username = GetUsernameBySessionId(Process.GetCurrentProcess().SessionId);
                     });
                 }
                 else

src/modules/MouseWithoutBorders/App/Class/Common.InitAndCleanup.cs

@@ -46,7 +46,7 @@ namespace MouseWithoutBorders
         internal static void UpdateMachineTimeAndID()
         {
             Common.MachineName = Common.MachineName.Trim();
-            _ = Common.MachinePool.TryUpdateMachineID(Common.MachineName, Common.MachineID, true);
+            _ = MachineStuff.MachinePool.TryUpdateMachineID(Common.MachineName, Common.MachineID, true);
         }
 
         private static void InitializeMachinePoolFromSettings()
@@ -59,13 +59,13 @@ namespace MouseWithoutBorders
                     info[i].Name = info[i].Name.Trim();
                 }
 
-                Common.MachinePool.Initialize(info);
-                Common.MachinePool.ResetIPAddressesForDeadMachines(true);
+                MachineStuff.MachinePool.Initialize(info);
+                MachineStuff.MachinePool.ResetIPAddressesForDeadMachines(true);
             }
             catch (Exception ex)
             {
                 Logger.Log(ex);
-                Common.MachinePool.Clear();
+                MachineStuff.MachinePool.Clear();
             }
         }
 
@@ -74,16 +74,16 @@ namespace MouseWithoutBorders
             try
             {
                 GetMachineName();
-                DesMachineID = NewDesMachineID = MachineID;
+                DesMachineID = MachineStuff.NewDesMachineID = MachineID;
 
                 // MessageBox.Show(machineID.ToString(CultureInfo.CurrentCulture)); // For test
                 InitializeMachinePoolFromSettings();
 
                 Common.MachineName = Common.MachineName.Trim();
-                _ = Common.MachinePool.LearnMachine(Common.MachineName);
-                _ = Common.MachinePool.TryUpdateMachineID(Common.MachineName, Common.MachineID, true);
+                _ = MachineStuff.MachinePool.LearnMachine(Common.MachineName);
+                _ = MachineStuff.MachinePool.TryUpdateMachineID(Common.MachineName, Common.MachineID, true);
 
-                Common.UpdateMachinePoolStringSetting();
+                MachineStuff.UpdateMachinePoolStringSetting();
             }
             catch (Exception e)
             {
@@ -154,7 +154,7 @@ namespace MouseWithoutBorders
             {
                 Logger.TelemetryLogTrace($"{nameof(SystemEvents_PowerModeChanged)}: {e.Mode}", SeverityLevel.Information);
                 LastResumeSuspendTime = DateTime.UtcNow;
-                SwitchToMultipleMode(false, true);
+                MachineStuff.SwitchToMultipleMode(false, true);
             }
         }
 

src/modules/MouseWithoutBorders/App/Class/Common.Launch.cs

@@ -5,7 +5,6 @@
 using System;
 using System.ComponentModel;
 using System.Diagnostics;
-using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
 using System.Runtime.InteropServices;
 using System.Security.Principal;
@@ -39,23 +38,31 @@ namespace MouseWithoutBorders
             }
             else
             {
+                // SuppressFlow fixes an issue on service mode, where WTSQueryUserToken runs successfully once and then fails
+                // on subsequent calls. The reason appears to be an unknown issue with reverting the impersonation,
+                // meaning that subsequent impersonation attempts run as the logged-on user and fail.
+                // This is a workaround.
+                using var asyncFlowControl = System.Threading.ExecutionContext.SuppressFlow();
+
                 uint dwSessionId;
                 IntPtr hUserToken = IntPtr.Zero, hUserTokenDup = IntPtr.Zero;
                 try
                 {
                     dwSessionId = (uint)Process.GetCurrentProcess().SessionId;
                     uint rv = NativeMethods.WTSQueryUserToken(dwSessionId, ref hUserToken);
-                    Logger.LogDebug("WTSQueryUserToken returned " + rv.ToString(CultureInfo.CurrentCulture));
+                    var lastError = rv == 0 ? Marshal.GetLastWin32Error() : 0;
+
+                    Logger.LogDebug($"{nameof(NativeMethods.WTSQueryUserToken)} returned {rv.ToString(CultureInfo.CurrentCulture)}");
 
                     if (rv == 0)
                     {
-                        Logger.LogDebug($"WTSQueryUserToken failed with: {Marshal.GetLastWin32Error()}.");
+                        Logger.Log($"{nameof(NativeMethods.WTSQueryUserToken)} failed with: {lastError}.");
                         return false;
                     }
 
                     if (!NativeMethods.DuplicateToken(hUserToken, (int)NativeMethods.SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation, ref hUserTokenDup))
                     {
-                        Logger.TelemetryLogTrace($"DuplicateToken Failed! {Logger.GetStackTrace(new StackTrace())}", SeverityLevel.Warning);
+                        Logger.TelemetryLogTrace($"{nameof(NativeMethods.DuplicateToken)} Failed! {Logger.GetStackTrace(new StackTrace())}", SeverityLevel.Warning);
                         _ = NativeMethods.CloseHandle(hUserToken);
                         _ = NativeMethods.CloseHandle(hUserTokenDup);
                         return false;

src/modules/MouseWithoutBorders/App/Class/Common.WinAPI.cs

@@ -41,7 +41,7 @@ namespace MouseWithoutBorders
             GetScreenConfig();
         }
 
-        private static readonly List<Point> SensitivePoints = new();
+        internal static readonly List<Point> SensitivePoints = new();
 
         private static bool MonitorEnumProc(IntPtr hMonitor, IntPtr hdcMonitor, ref NativeMethods.RECT lprcMonitor, IntPtr dwData)
         {
@@ -162,21 +162,21 @@ namespace MouseWithoutBorders
 
                 // 1000 calls to EnumDisplayMonitors cost a dozen of milliseconds
 #endif
-                Interlocked.Exchange(ref desktopBounds, newDesktopBounds);
-                Interlocked.Exchange(ref primaryScreenBounds, newPrimaryScreenBounds);
+                Interlocked.Exchange(ref MachineStuff.desktopBounds, newDesktopBounds);
+                Interlocked.Exchange(ref MachineStuff.primaryScreenBounds, newPrimaryScreenBounds);
 
                 Logger.Log(string.Format(
                     CultureInfo.CurrentCulture,
                     "logon = {0} PrimaryScreenBounds = {1},{2},{3},{4} desktopBounds = {5},{6},{7},{8}",
                     Common.RunOnLogonDesktop,
-                    Common.PrimaryScreenBounds.Left,
-                    Common.PrimaryScreenBounds.Top,
-                    Common.PrimaryScreenBounds.Right,
-                    Common.PrimaryScreenBounds.Bottom,
-                    Common.DesktopBounds.Left,
-                    Common.DesktopBounds.Top,
-                    Common.DesktopBounds.Right,
-                    Common.DesktopBounds.Bottom));
+                    MachineStuff.PrimaryScreenBounds.Left,
+                    MachineStuff.PrimaryScreenBounds.Top,
+                    MachineStuff.PrimaryScreenBounds.Right,
+                    MachineStuff.PrimaryScreenBounds.Bottom,
+                    MachineStuff.DesktopBounds.Left,
+                    MachineStuff.DesktopBounds.Top,
+                    MachineStuff.DesktopBounds.Right,
+                    MachineStuff.DesktopBounds.Bottom));
 
                 Logger.Log("==================== GetScreenConfig ended");
             }

src/modules/MouseWithoutBorders/App/Class/Common.cs

@@ -112,7 +112,7 @@ namespace MouseWithoutBorders
         internal const int JUST_GOT_BACK_FROM_SCREEN_SAVER = 9999;
 
         internal const int NETWORK_STREAM_BUF_SIZE = 1024 * 1024;
-        private static readonly EventWaitHandle EvSwitch = new(false, EventResetMode.AutoReset);
+        internal static readonly EventWaitHandle EvSwitch = new(false, EventResetMode.AutoReset);
         private static Point lastPos;
         private static int switchCount;
         private static long lastReconnectByHotKeyTime;
@@ -236,12 +236,12 @@ namespace MouseWithoutBorders
 
         internal static ID DesMachineID
         {
-            get => Common.desMachineID;
+            get => MachineStuff.desMachineID;
 
             set
             {
-                Common.desMachineID = value;
-                Common.DesMachineName = Common.NameFromID(Common.desMachineID);
+                MachineStuff.desMachineID = value;
+                MachineStuff.DesMachineName = MachineStuff.NameFromID(MachineStuff.desMachineID);
             }
         }
 
@@ -351,7 +351,7 @@ namespace MouseWithoutBorders
                     Logger.TelemetryLogTrace($"[{actionName}] took more than {(long)timeout.TotalSeconds}, restarting the process.", SeverityLevel.Warning, true);
 
                     string desktop = Common.GetMyDesktop();
-                    oneInstanceCheck?.Close();
+                    MachineStuff.oneInstanceCheck?.Close();
                     _ = Process.Start(Application.ExecutablePath, desktop);
                     Logger.LogDebug($"Started on desktop {desktop}");
 
@@ -619,12 +619,12 @@ namespace MouseWithoutBorders
 
         internal static void ProcessByeByeMessage(DATA package)
         {
-            if (package.Src == desMachineID)
+            if (package.Src == MachineStuff.desMachineID)
             {
-                SwitchToMachine(MachineName.Trim());
+                MachineStuff.SwitchToMachine(MachineName.Trim());
             }
 
-            _ = RemoveDeadMachines(package.Src);
+            _ = MachineStuff.RemoveDeadMachines(package.Src);
         }
 
         internal static long GetTick() // ms
@@ -644,12 +644,12 @@ namespace MouseWithoutBorders
             try
             {
                 string fileName = GetMyStorageDir() + @"ScreenCaptureByMouseWithoutBorders.png";
-                int w = desktopBounds.Right - desktopBounds.Left;
-                int h = desktopBounds.Bottom - desktopBounds.Top;
+                int w = MachineStuff.desktopBounds.Right - MachineStuff.desktopBounds.Left;
+                int h = MachineStuff.desktopBounds.Bottom - MachineStuff.desktopBounds.Top;
                 Bitmap bm = new(w, h);
                 Graphics g = Graphics.FromImage(bm);
                 Size s = new(w, h);
-                g.CopyFromScreen(desktopBounds.Left, desktopBounds.Top, 0, 0, s);
+                g.CopyFromScreen(MachineStuff.desktopBounds.Left, MachineStuff.desktopBounds.Top, 0, 0, s);
                 bm.Save(fileName, ImageFormat.Png);
                 bm.Dispose();
                 return fileName;
@@ -665,7 +665,7 @@ namespace MouseWithoutBorders
         {
             Common.DoSomethingInUIThread(() =>
             {
-                if (!MouseDown && Common.SendMessageToHelper(0x401, IntPtr.Zero, IntPtr.Zero) > 0)
+                if (!DragDrop.MouseDown && Common.SendMessageToHelper(0x401, IntPtr.Zero, IntPtr.Zero) > 0)
                 {
                     Common.MMSleep(0.2);
                     InputSimulation.SendKey(new KEYBDDATA() { wVk = (int)VK.SNAPSHOT });
@@ -675,10 +675,10 @@ namespace MouseWithoutBorders
 
                     _ = NativeMethods.MoveWindow(
                         (IntPtr)NativeMethods.FindWindow(null, Common.HELPER_FORM_TEXT),
-                        Common.DesktopBounds.Left,
-                        Common.DesktopBounds.Top,
-                        Common.DesktopBounds.Right - Common.DesktopBounds.Left,
-                        Common.DesktopBounds.Bottom - Common.DesktopBounds.Top,
+                        MachineStuff.DesktopBounds.Left,
+                        MachineStuff.DesktopBounds.Top,
+                        MachineStuff.DesktopBounds.Right - MachineStuff.DesktopBounds.Left,
+                        MachineStuff.DesktopBounds.Bottom - MachineStuff.DesktopBounds.Top,
                         false);
 
                     _ = Common.SendMessageToHelper(0x406, IntPtr.Zero, IntPtr.Zero, false);
@@ -729,7 +729,7 @@ namespace MouseWithoutBorders
             }
             else
             {
-                ID id = Common.MachinePool.ResolveID(machine);
+                ID id = MachineStuff.MachinePool.ResolveID(machine);
                 if (id != ID.NONE)
                 {
                     SendPackage(id, PackageType.ClipboardCapture);
@@ -753,7 +753,7 @@ namespace MouseWithoutBorders
                 {
                     if (Setting.Values.FirstRun)
                     {
-                        Common.Settings?.ShowTip(icon, tip, timeOutInMilliseconds);
+                        MachineStuff.Settings?.ShowTip(icon, tip, timeOutInMilliseconds);
                     }
 
                     Common.MatrixForm?.ShowTip(icon, tip, timeOutInMilliseconds);
@@ -882,7 +882,7 @@ namespace MouseWithoutBorders
 
             if (updateClientSockets)
             {
-                UpdateClientSockets(nameof(IsConnectedTo));
+                MachineStuff.UpdateClientSockets(nameof(IsConnectedTo));
             }
 
             return false;
@@ -921,7 +921,7 @@ namespace MouseWithoutBorders
                         {
                             if (t != null && t.BackingSocket != null && (t.Status == SocketStatus.Connected || (t.Status == SocketStatus.Handshaking && includeHandShakingSockets)))
                             {
-                                if (t.MachineId == (uint)data.Des || (data.Des == ID.ALL && t.MachineId != exceptDes && InMachineMatrix(t.MachineName)))
+                                if (t.MachineId == (uint)data.Des || (data.Des == ID.ALL && t.MachineId != exceptDes && MachineStuff.InMachineMatrix(t.MachineName)))
                                 {
                                     try
                                     {
@@ -952,20 +952,20 @@ namespace MouseWithoutBorders
                     {
                         Logger.LogDebug("********** No active connection found for the remote machine! **********" + data.Des.ToString());
 
-                        if (data.Des == ID.NONE || RemoveDeadMachines(data.Des))
+                        if (data.Des == ID.NONE || MachineStuff.RemoveDeadMachines(data.Des))
                         {
                             // SwitchToMachine(MachineName.Trim());
-                            NewDesMachineID = DesMachineID = MachineID;
-                            SwitchLocation.X = XY_BY_PIXEL + myLastX;
-                            SwitchLocation.Y = XY_BY_PIXEL + myLastY;
-                            SwitchLocation.ResetCount();
+                            MachineStuff.NewDesMachineID = DesMachineID = MachineID;
+                            MachineStuff.SwitchLocation.X = XY_BY_PIXEL + myLastX;
+                            MachineStuff.SwitchLocation.Y = XY_BY_PIXEL + myLastY;
+                            MachineStuff.SwitchLocation.ResetCount();
                             EvSwitch.Set();
                         }
                     }
 
                     if (updateClientSockets)
                     {
-                        UpdateClientSockets("SkSend");
+                        MachineStuff.UpdateClientSockets("SkSend");
                     }
                 }
                 catch (Exception e)
@@ -1203,7 +1203,7 @@ namespace MouseWithoutBorders
         {
             int machineCt = 0;
 
-            foreach (string m in Common.MachineMatrix)
+            foreach (string m in MachineStuff.MachineMatrix)
             {
                 if (!string.IsNullOrEmpty(m.Trim()))
                 {
@@ -1211,15 +1211,15 @@ namespace MouseWithoutBorders
                 }
             }
 
-            if (machineCt < 2 && Common.Settings != null && (Common.Settings.GetCurrentPage() is SetupPage1 || Common.Settings.GetCurrentPage() is SetupPage2b))
+            if (machineCt < 2 && MachineStuff.Settings != null && (MachineStuff.Settings.GetCurrentPage() is SetupPage1 || MachineStuff.Settings.GetCurrentPage() is SetupPage2b))
             {
-                Common.MachineMatrix = new string[Common.MAX_MACHINE] { Common.MachineName.Trim(), desMachine, string.Empty, string.Empty };
-                Logger.LogDebug("UpdateSetupMachineMatrix: " + string.Join(",", Common.MachineMatrix));
+                MachineStuff.MachineMatrix = new string[MachineStuff.MAX_MACHINE] { Common.MachineName.Trim(), desMachine, string.Empty, string.Empty };
+                Logger.LogDebug("UpdateSetupMachineMatrix: " + string.Join(",", MachineStuff.MachineMatrix));
 
                 Common.DoSomethingInUIThread(
                     () =>
                     {
-                        Common.Settings.SetControlPage(new SetupPage4());
+                        MachineStuff.Settings.SetControlPage(new SetupPage4());
                     },
                     true);
             }
@@ -1255,7 +1255,7 @@ namespace MouseWithoutBorders
                         SocketStuff.ClearBadIPs();
                     }
 
-                    UpdateClientSockets("ReopenSockets");
+                    MachineStuff.UpdateClientSockets("ReopenSockets");
                 }
             },
                 true);
@@ -1473,17 +1473,17 @@ namespace MouseWithoutBorders
         {
             Logger.LogDebug("+++++ MoveMouseToCenter");
             InputSimulation.MoveMouse(
-                Common.PrimaryScreenBounds.Left + ((Common.PrimaryScreenBounds.Right - Common.PrimaryScreenBounds.Left) / 2),
-                Common.PrimaryScreenBounds.Top + ((Common.PrimaryScreenBounds.Bottom - Common.PrimaryScreenBounds.Top) / 2));
+                MachineStuff.PrimaryScreenBounds.Left + ((MachineStuff.PrimaryScreenBounds.Right - MachineStuff.PrimaryScreenBounds.Left) / 2),
+                MachineStuff.PrimaryScreenBounds.Top + ((MachineStuff.PrimaryScreenBounds.Bottom - MachineStuff.PrimaryScreenBounds.Top) / 2));
         }
 
         internal static void HideMouseCursor(bool byHideMouseMessage)
         {
             Common.LastPos = new Point(
-                Common.PrimaryScreenBounds.Left + ((Common.PrimaryScreenBounds.Right - Common.PrimaryScreenBounds.Left) / 2),
-                Setting.Values.HideMouse ? 4 : Common.PrimaryScreenBounds.Top + ((Common.PrimaryScreenBounds.Bottom - Common.PrimaryScreenBounds.Top) / 2));
+                MachineStuff.PrimaryScreenBounds.Left + ((MachineStuff.PrimaryScreenBounds.Right - MachineStuff.PrimaryScreenBounds.Left) / 2),
+                Setting.Values.HideMouse ? 4 : MachineStuff.PrimaryScreenBounds.Top + ((MachineStuff.PrimaryScreenBounds.Bottom - MachineStuff.PrimaryScreenBounds.Top) / 2));
 
-            if ((desMachineID != MachineID && desMachineID != ID.ALL) || byHideMouseMessage)
+            if ((MachineStuff.desMachineID != MachineID && MachineStuff.desMachineID != ID.ALL) || byHideMouseMessage)
             {
                 _ = NativeMethods.SetCursorPos(Common.LastPos.X, Common.LastPos.Y);
                 _ = NativeMethods.GetCursorPos(ref Common.lastPos);

src/modules/MouseWithoutBorders/App/Class/IClipboardHelper.cs

@@ -154,7 +154,7 @@ namespace MouseWithoutBorders
 
         public void SendDragFile(string fileName)
         {
-            Common.DragDropStep05Ex(fileName);
+            DragDrop.DragDropStep05Ex(fileName);
         }
 
         public void SendClipboardData(ByteArrayOrString data, bool isFilePath)

src/modules/MouseWithoutBorders/App/Class/InputHook.cs

@@ -222,10 +222,10 @@ namespace MouseWithoutBorders.Class
                 {
                     Common.RealInputEventCount++;
 
-                    if (Common.NewDesMachineID == Common.MachineID || Common.NewDesMachineID == ID.ALL)
+                    if (MachineStuff.NewDesMachineID == Common.MachineID || MachineStuff.NewDesMachineID == ID.ALL)
                     {
                         local = true;
-                        if (Common.MainFormVisible && !Common.IsDropping)
+                        if (Common.MainFormVisible && !DragDrop.IsDropping)
                         {
                             Common.MainFormDot();
                         }
@@ -265,19 +265,19 @@ namespace MouseWithoutBorders.Class
                         }
                         else
                         {
-                            if (Common.SwitchLocation.Count > 0 && Common.NewDesMachineID != Common.MachineID && Common.NewDesMachineID != ID.ALL)
+                            if (MachineStuff.SwitchLocation.Count > 0 && MachineStuff.NewDesMachineID != Common.MachineID && MachineStuff.NewDesMachineID != ID.ALL)
                             {
-                                Common.SwitchLocation.Count--;
+                                MachineStuff.SwitchLocation.Count--;
 
-                                if (Common.SwitchLocation.X > Common.XY_BY_PIXEL - 100000 || Common.SwitchLocation.Y > Common.XY_BY_PIXEL - 100000)
+                                if (MachineStuff.SwitchLocation.X > Common.XY_BY_PIXEL - 100000 || MachineStuff.SwitchLocation.Y > Common.XY_BY_PIXEL - 100000)
                                 {
-                                    hookCallbackMouseData.X = Common.SwitchLocation.X - Common.XY_BY_PIXEL;
-                                    hookCallbackMouseData.Y = Common.SwitchLocation.Y - Common.XY_BY_PIXEL;
+                                    hookCallbackMouseData.X = MachineStuff.SwitchLocation.X - Common.XY_BY_PIXEL;
+                                    hookCallbackMouseData.Y = MachineStuff.SwitchLocation.Y - Common.XY_BY_PIXEL;
                                 }
                                 else
                                 {
-                                    hookCallbackMouseData.X = (Common.SwitchLocation.X * Common.ScreenWidth / 65535) + Common.PrimaryScreenBounds.Left;
-                                    hookCallbackMouseData.Y = (Common.SwitchLocation.Y * Common.ScreenHeight / 65535) + Common.PrimaryScreenBounds.Top;
+                                    hookCallbackMouseData.X = (MachineStuff.SwitchLocation.X * Common.ScreenWidth / 65535) + MachineStuff.PrimaryScreenBounds.Left;
+                                    hookCallbackMouseData.Y = (MachineStuff.SwitchLocation.Y * Common.ScreenHeight / 65535) + MachineStuff.PrimaryScreenBounds.Top;
                                 }
 
                                 Common.HideMouseCursor(false);
@@ -290,22 +290,22 @@ namespace MouseWithoutBorders.Class
                                 hookCallbackMouseData.X += dx;
                                 hookCallbackMouseData.Y += dy;
 
-                                if (hookCallbackMouseData.X < Common.PrimaryScreenBounds.Left)
+                                if (hookCallbackMouseData.X < MachineStuff.PrimaryScreenBounds.Left)
                                 {
-                                    hookCallbackMouseData.X = Common.PrimaryScreenBounds.Left - 1;
+                                    hookCallbackMouseData.X = MachineStuff.PrimaryScreenBounds.Left - 1;
                                 }
-                                else if (hookCallbackMouseData.X > Common.PrimaryScreenBounds.Right)
+                                else if (hookCallbackMouseData.X > MachineStuff.PrimaryScreenBounds.Right)
                                 {
-                                    hookCallbackMouseData.X = Common.PrimaryScreenBounds.Right + 1;
+                                    hookCallbackMouseData.X = MachineStuff.PrimaryScreenBounds.Right + 1;
                                 }
 
-                                if (hookCallbackMouseData.Y < Common.PrimaryScreenBounds.Top)
+                                if (hookCallbackMouseData.Y < MachineStuff.PrimaryScreenBounds.Top)
                                 {
-                                    hookCallbackMouseData.Y = Common.PrimaryScreenBounds.Top - 1;
+                                    hookCallbackMouseData.Y = MachineStuff.PrimaryScreenBounds.Top - 1;
                                 }
-                                else if (hookCallbackMouseData.Y > Common.PrimaryScreenBounds.Bottom)
+                                else if (hookCallbackMouseData.Y > MachineStuff.PrimaryScreenBounds.Bottom)
                                 {
-                                    hookCallbackMouseData.Y = Common.PrimaryScreenBounds.Bottom + 1;
+                                    hookCallbackMouseData.Y = MachineStuff.PrimaryScreenBounds.Bottom + 1;
                                 }
 
                                 dx += dx < 0 ? -Common.MOVE_MOUSE_RELATIVE : Common.MOVE_MOUSE_RELATIVE;
@@ -315,8 +315,8 @@ namespace MouseWithoutBorders.Class
 
                         MouseEvent(hookCallbackMouseData, dx, dy);
 
-                        Common.DragDropStep01(wParam);
-                        Common.DragDropStep09(wParam);
+                        DragDrop.DragDropStep01(wParam);
+                        DragDrop.DragDropStep09(wParam);
                     }
 
                     if (local)
@@ -432,7 +432,7 @@ namespace MouseWithoutBorders.Class
 
                             if (Common.DesMachineID != ID.ALL)
                             {
-                                Common.SwitchToMachine(Common.MachineName.Trim());
+                                MachineStuff.SwitchToMachine(Common.MachineName.Trim());
                             }
 
                             /*
@@ -518,7 +518,7 @@ namespace MouseWithoutBorders.Class
             if (Common.HotkeyMatched(vkCode, winDown, CtrlDown, altDown, shiftDown, Setting.Values.HotKeySwitch2AllPC))
             {
                 ResetLastSwitchKeys();
-                Common.SwitchToMultipleMode(Common.DesMachineID != ID.ALL, true);
+                MachineStuff.SwitchToMultipleMode(Common.DesMachineID != ID.ALL, true);
             }
 
             if (Common.HotkeyMatched(vkCode, winDown, CtrlDown, altDown, shiftDown, Setting.Values.HotKeyToggleEasyMouse))
@@ -543,7 +543,7 @@ namespace MouseWithoutBorders.Class
                 {
                     if (Common.GetTick() - lastHotKeyLockMachine < 500)
                     {
-                        Common.SwitchToMultipleMode(true, true);
+                        MachineStuff.SwitchToMultipleMode(true, true);
 
                         var codes = GetVkCodesList(Setting.Values.HotKeyLockMachine);
 
@@ -561,7 +561,7 @@ namespace MouseWithoutBorders.Class
                             KeyboardEvent(hookCallbackKeybdData);
                         }
 
-                        Common.SwitchToMultipleMode(false, true);
+                        MachineStuff.SwitchToMultipleMode(false, true);
 
                         _ = NativeMethods.LockWorkStation();
                     }
@@ -625,9 +625,9 @@ namespace MouseWithoutBorders.Class
 
         private static bool Switch2(int index)
         {
-            if (Common.MachineMatrix != null && Common.MachineMatrix.Length > index)
+            if (MachineStuff.MachineMatrix != null && MachineStuff.MachineMatrix.Length > index)
             {
-                string mcName = Common.MachineMatrix[index].Trim();
+                string mcName = MachineStuff.MachineMatrix[index].Trim();
                 if (!string.IsNullOrEmpty(mcName))
                 {
                     // Common.DoSomethingInUIThread(delegate()
@@ -636,7 +636,7 @@ namespace MouseWithoutBorders.Class
                     }
 
                     // );
-                    Common.SwitchToMachine(mcName);
+                    MachineStuff.SwitchToMachine(mcName);
 
                     if (!Common.RunOnLogonDesktop && !Common.RunOnScrSaverDesktop)
                     {