[GPO] Add policies for configuring utilities enabled states (#21411)

* Add GPOWrapper headers and C++/WinRT library

* Check GPO before starting utilities

* Show message on GPO having disabled preview panes.

* Don't generate thumbnails if GPO disabled

* Fix FancyZonesEditor unable to recognize GPOWrapper

* Move settings view models to the settings project

* Use GPO to block enabling utilities in Settings

* Hide context menu entries when gpo disables utilities

* Apply gpo policies when enabling PowerToys on runner

* Add version and metadata to dll

* Add GPOWrapper to the installer

* Fix MSBuild errors on WPF apps by using Projection

* Signing

* Add gpo files and publish them

* Add GPO policies to the bug report tool

* Add some documentation for using GPO

* Mention support to actual lowest supported version of Windows

* Move PowerToys to the root of administrative templates tree

* Save policies on Software\Policies\PowerToys

* Support both machine and user scopes

* Fix documentation to reference computer and user scopes

* Mention incompatibility with outlook in gpo

* Set a better folder structure for gpo assets

* Move PDF Handler warning to the description

* Update doc/gpo/README.md

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

* Add actual minimum version of PowerToys to gpo files

* Fix identation

* Remove GPOWrapper Readme

* Add Active Directory instructions to doc

Co-authored-by: Heiko <61519853+htcfreek@users.noreply.github.com>

src/modules/previewpane/SvgPreviewHandler/Properties/Resource.Designer.cs

@@ -77,5 +77,14 @@ namespace Microsoft.PowerToys.PreviewHandler.Svg.Properties {
                 return ResourceManager.GetString("SvgNotPreviewedError", resourceCulture);
             }
         }
+
+        /// <summary>
+        ///   Looks up a localized string for an error when Gpo has the utility disabled.
+        /// </summary>
+        internal static string GpoDisabledErrorText {
+            get {
+                return ResourceManager.GetString("GpoDisabledErrorText", resourceCulture);
+            }
+        }
     }
 }

src/modules/previewpane/SvgPreviewHandler/Properties/Resource.resx

@@ -123,4 +123,8 @@
   <data name="SvgNotPreviewedError" xml:space="preserve">
     <value>The Svg could not be preview due to an internal error in Svg Preview Handler.</value>
   </data>
+  <data name="GpoDisabledErrorText" xml:space="preserve">
+    <value>Tried to start with a GPO policy setting the utility to always be disabled. Please contact your systems administrator.</value>
+    <comment>GPO stands for the Windows Group Policy Object feature.</comment>
+  </data>
 </root>

src/modules/previewpane/SvgPreviewHandler/SvgPreviewControl.cs

@@ -11,6 +11,7 @@ using System.Runtime.InteropServices.ComTypes;
 using System.Windows.Forms;
 using Common;
 using Common.Utilities;
+using Microsoft.PowerToys.PreviewHandler.Svg.Properties;
 using Microsoft.PowerToys.PreviewHandler.Svg.Telemetry.Events;
 using Microsoft.PowerToys.Telemetry;
 using Microsoft.Web.WebView2.Core;
@@ -82,6 +83,20 @@ namespace Microsoft.PowerToys.PreviewHandler.Svg
         /// <param name="dataSource">Stream reference to access source file.</param>
         public override void DoPreview<T>(T dataSource)
         {
+            if (global::PowerToys.GPOWrapper.GPOWrapper.GetConfiguredSvgPreviewEnabledValue() == global::PowerToys.GPOWrapper.GpoRuleConfigured.Disabled)
+            {
+                // GPO is disabling this utility. Show an error message instead.
+                InvokeOnControlThread(() =>
+                {
+                    _infoBarAdded = true;
+                    AddTextBoxControl(Properties.Resource.GpoDisabledErrorText);
+                    Resize += FormResized;
+                    base.DoPreview(dataSource);
+                });
+
+                return;
+            }
+
             CleanupWebView2UserDataFolder();
 
             string svgData = null;

src/modules/previewpane/SvgPreviewHandler/SvgPreviewHandler.csproj

@@ -32,12 +32,25 @@
     <Compile Update="SvgPreviewControl.cs" />
   </ItemGroup>
 
+  <!-- See https://learn.microsoft.com/windows/apps/develop/platform/csharp-winrt/net-projection-from-cppwinrt-component for more info -->
+  <PropertyGroup>
+    <CsWinRTIncludes>PowerToys.GPOWrapper</CsWinRTIncludes>
+    <CsWinRTGeneratedFilesDir>$(OutDir)</CsWinRTGeneratedFilesDir>
+    <ErrorOnDuplicatePublishOutputFiles>false</ErrorOnDuplicatePublishOutputFiles>
+  </PropertyGroup>
+  <PropertyGroup>
+    <!-- Disable missing comment warning. WinRT/C++ libraries added won't have comments on thier reflections. -->
+    <NoWarn>$(NoWarn);1591</NoWarn>
+  </PropertyGroup>
+
   <ItemGroup>
+    <ProjectReference Include="..\..\..\common\GPOWrapper\GPOWrapper.vcxproj" />
     <ProjectReference Include="..\..\..\common\ManagedTelemetry\Telemetry\ManagedTelemetry.csproj" />
     <ProjectReference Include="..\common\PreviewHandlerCommon.csproj" />
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.Windows.CsWinRT" Version="2.0.0" />
     <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.1343.22" />
   </ItemGroup>