Refactor PowerDisplay IPC and add hotkey support

Refactored IPC initialization to handle window visibility based on
launch mode (standalone or IPC). Added `IsWindowVisible` P/Invoke
method and implemented IPC commands for window control, monitor
refresh, and settings updates.

Fixed bidirectional pipe creation and adjusted process startup
order in `PowerDisplayProcessManager`. Made `ShowWindow` and
`HideWindow` methods public and added `IsWindowVisible` to
`MainWindow.xaml.cs`.

Introduced activation hotkey parsing and configuration with a
default of `Win+Alt+M`. Exposed hotkey to PowerToys runner and
integrated it into the dashboard with localization and a launch
button. Renamed module DLL for consistency.
This commit is contained in:
Yu Leng
2025-11-12 13:18:36 +08:00
parent e2774eff2d
commit e90c4273f7
12 changed files with 296 additions and 41 deletions

View File

@@ -54,6 +54,10 @@ namespace PowerDisplay.Native
[return: MarshalAs(UnmanagedType.Bool)]
internal static partial bool SetForegroundWindow(IntPtr hWnd);
[LibraryImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
internal static partial bool IsWindowVisible(IntPtr hWnd);
// ==================== User32.dll - Window Creation and Messaging ====================
[LibraryImport("user32.dll", EntryPoint = "CreateWindowExW", StringMarshalling = StringMarshalling.Utf16)]
internal static partial IntPtr CreateWindowEx(

View File

@@ -171,7 +171,9 @@ namespace PowerDisplay
// Initialize IPC in background (non-blocking)
// Only connect pipes when launched from PowerToys (not standalone)
if (!string.IsNullOrEmpty(_pipeUuid) && _powerToysRunnerPid != -1)
bool isIPCMode = !string.IsNullOrEmpty(_pipeUuid) && _powerToysRunnerPid != -1;
if (isIPCMode)
{
// Async pipe connection in background - don't block UI thread
_ = Task.Run(() => InitializeBidirectionalPipes(_pipeUuid));
@@ -182,8 +184,23 @@ namespace PowerDisplay
Logger.LogInfo("Running in standalone mode, IPC disabled");
}
// Create main window but don't activate, window will auto-hide after initialization
// Create main window
_mainWindow = new MainWindow();
// FIX BUG #5: Window visibility depends on launch mode
// - IPC mode (launched by PowerToys Runner): Start hidden, wait for show_window IPC command
// - Standalone mode (no command-line args): Show window immediately
if (!isIPCMode)
{
// Standalone mode - activate and show window
_mainWindow.Activate();
Logger.LogInfo("Window activated (standalone mode)");
}
else
{
// IPC mode - window remains inactive (hidden) until show_window command received
Logger.LogInfo("Window created but not activated (IPC mode - waiting for show_window command)");
}
}
catch (Exception ex)
{
@@ -251,7 +268,7 @@ namespace PowerDisplay
/// <summary>
/// Message receiver thread procedure
/// </summary>
private static void MessageReceiverThreadProc()
private void MessageReceiverThreadProc()
{
Logger.LogInfo("Message receiver thread started");
@@ -299,7 +316,7 @@ namespace PowerDisplay
/// <summary>
/// Handle IPC messages received from ModuleInterface/Settings UI
/// </summary>
private static void OnIPCMessageReceived(string message)
private void OnIPCMessageReceived(string message)
{
try
{
@@ -317,31 +334,71 @@ namespace PowerDisplay
case "show_window":
Logger.LogInfo("Received show_window command");
// TODO: Implement window show logic
// FIX BUG #3: Implement window show logic
_mainWindow?.DispatcherQueue.TryEnqueue(() =>
{
if (_mainWindow is MainWindow mainWindow)
{
mainWindow.ShowWindow();
}
});
break;
case "toggle_window":
Logger.LogInfo("Received toggle_window command");
// TODO: Implement window toggle logic
// FIX BUG #3: Implement window toggle logic
_mainWindow?.DispatcherQueue.TryEnqueue(() =>
{
if (_mainWindow is MainWindow mainWindow)
{
if (mainWindow.IsWindowVisible())
{
mainWindow.HideWindow();
}
else
{
mainWindow.ShowWindow();
}
}
});
break;
case "refresh_monitors":
Logger.LogInfo("Received refresh_monitors command");
// TODO: Implement monitor refresh logic
// FIX BUG #3: Implement monitor refresh logic
_mainWindow?.DispatcherQueue.TryEnqueue(() =>
{
if (_mainWindow is MainWindow mainWindow && mainWindow.ViewModel != null)
{
mainWindow.ViewModel.RefreshCommand?.Execute(null);
}
});
break;
case "settings_updated":
Logger.LogInfo("Received settings_updated command");
// TODO: Implement settings update logic
// FIX BUG #3: Implement settings update logic
_mainWindow?.DispatcherQueue.TryEnqueue(() =>
{
if (_mainWindow is MainWindow mainWindow && mainWindow.ViewModel != null)
{
// Reload settings from file
_ = mainWindow.ViewModel.ReloadMonitorSettingsAsync();
}
});
break;
case "terminate":
Logger.LogInfo("Received terminate command");
// TODO: Implement graceful shutdown
// FIX BUG #3: Implement graceful shutdown
_mainWindow?.DispatcherQueue.TryEnqueue(() =>
{
Shutdown();
});
break;
default:

View File

@@ -109,8 +109,11 @@ namespace PowerDisplay
// Start async initialization (monitor scanning happens here)
await InitializeAsync();
// Hide window after initialization completes
HideWindow();
// FIX BUG #4: Don't auto-hide window after initialization
// Window visibility should be controlled by IPC commands (show_window/toggle_window)
// If launched via PowerToys Runner, window should start hidden and wait for IPC show command
// If launched standalone, window should stay visible
// HideWindow(); // REMOVED - controlled by IPC or standalone mode
}
private async Task InitializeAsync()
@@ -223,7 +226,7 @@ namespace PowerDisplay
}
}
private void ShowWindow()
public void ShowWindow()
{
var hWnd = WinRT.Interop.WindowNative.GetWindowHandle(this);
@@ -253,7 +256,7 @@ namespace PowerDisplay
}
}
private void HideWindow()
public void HideWindow()
{
var hWnd = WinRT.Interop.WindowNative.GetWindowHandle(this);
@@ -278,6 +281,16 @@ namespace PowerDisplay
}
}
/// <summary>
/// Check if window is currently visible
/// </summary>
/// <returns>True if window is visible, false otherwise</returns>
public bool IsWindowVisible()
{
var hWnd = WinRT.Interop.WindowNative.GetWindowHandle(this);
return PInvoke.IsWindowVisible(hWnd);
}
private async void OnUIRefreshRequested(object? sender, EventArgs e)
{
Logger.LogInfo("UI refresh requested due to settings change");

View File

@@ -49,7 +49,7 @@
</ImportGroup>
<PropertyGroup Label="UserMacros" />
<PropertyGroup>
<OutDir>..\..\..\..\$(Platform)\$(Configuration)\modules\PowerDisplay\</OutDir>
<OutDir>..\..\..\..\$(Platform)\$(Configuration)\</OutDir>
<IntDir>$(Platform)\$(Configuration)\PowerDisplayModuleInterface\</IntDir>
<TargetName>PowerToys.PowerDisplayModuleInterface</TargetName>
</PropertyGroup>

View File

@@ -103,9 +103,15 @@ bool PowerDisplayProcessManager::is_process_running() const
void PowerDisplayProcessManager::terminate_process()
{
// Close pipe
// Close pipes
m_write_pipe.reset();
if (m_read_pipe != nullptr)
{
CloseHandle(m_read_pipe);
m_read_pipe = nullptr;
}
// Terminate process
if (m_hProcess != nullptr)
{
@@ -147,8 +153,12 @@ HRESULT PowerDisplayProcessManager::start_process(const std::wstring& pipe_uuid)
HRESULT PowerDisplayProcessManager::start_command_pipe(const std::wstring& pipe_uuid)
{
const constexpr DWORD BUFSIZE = 4096 * 4;
const constexpr DWORD client_timeout_millis = 5000;
// Create pipe for writing to PowerDisplay (OUT)
// FIX BUG #2: Create BOTH pipes (bidirectional)
// PowerDisplay.exe expects both IN and OUT pipes to exist
// Create OUT pipe: ModuleInterface writes, PowerDisplay reads
m_pipe_name_out = std::format(L"\\\\.\\pipe\\powertoys_powerdisplay_{}_out", pipe_uuid);
HANDLE hWritePipe = CreateNamedPipe(
@@ -164,52 +174,113 @@ HRESULT PowerDisplayProcessManager::start_command_pipe(const std::wstring& pipe_
if (hWritePipe == NULL || hWritePipe == INVALID_HANDLE_VALUE)
{
Logger::error(L"Error creating write pipe for PowerDisplay");
Logger::error(L"Error creating OUT pipe for PowerDisplay");
return E_FAIL;
}
// Create overlapped event for waiting for client to connect
OVERLAPPED write_overlapped = { 0 };
write_overlapped.hEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
// Create IN pipe: PowerDisplay writes, ModuleInterface reads
m_pipe_name_in = std::format(L"\\\\.\\pipe\\powertoys_powerdisplay_{}_in", pipe_uuid);
if (!write_overlapped.hEvent)
m_read_pipe = CreateNamedPipe(
m_pipe_name_in.c_str(),
PIPE_ACCESS_INBOUND | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
1, // max instances
0, // out buffer size (not used for inbound)
BUFSIZE, // in buffer size
0, // client timeout
NULL // default security
);
if (m_read_pipe == NULL || m_read_pipe == INVALID_HANDLE_VALUE)
{
Logger::error(L"Error creating overlapped event for PowerDisplay pipe");
Logger::error(L"Error creating IN pipe for PowerDisplay");
CloseHandle(hWritePipe);
return E_FAIL;
}
// Connect write pipe
// Create overlapped events for waiting for client to connect
OVERLAPPED write_overlapped = { 0 };
write_overlapped.hEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
OVERLAPPED read_overlapped = { 0 };
read_overlapped.hEvent = CreateEvent(nullptr, TRUE, FALSE, nullptr);
if (!write_overlapped.hEvent || !read_overlapped.hEvent)
{
Logger::error(L"Error creating overlapped events for PowerDisplay pipes");
if (write_overlapped.hEvent) CloseHandle(write_overlapped.hEvent);
if (read_overlapped.hEvent) CloseHandle(read_overlapped.hEvent);
CloseHandle(hWritePipe);
CloseHandle(m_read_pipe);
m_read_pipe = nullptr;
return E_FAIL;
}
// Connect both pipes
bool write_pipe_pending = false;
bool read_pipe_pending = false;
if (!ConnectNamedPipe(hWritePipe, &write_overlapped))
{
const auto lastError = GetLastError();
if (lastError != ERROR_IO_PENDING && lastError != ERROR_PIPE_CONNECTED)
if (lastError == ERROR_IO_PENDING)
{
Logger::error(L"Error connecting to write pipe");
write_pipe_pending = true;
}
else if (lastError != ERROR_PIPE_CONNECTED)
{
Logger::error(L"Error connecting OUT pipe");
CloseHandle(write_overlapped.hEvent);
CloseHandle(read_overlapped.hEvent);
CloseHandle(hWritePipe);
CloseHandle(m_read_pipe);
m_read_pipe = nullptr;
return E_FAIL;
}
}
// Wait for pipe to connect (with timeout)
const constexpr DWORD client_timeout_millis = 5000;
DWORD wait_result = WaitForSingleObject(write_overlapped.hEvent, client_timeout_millis);
if (!ConnectNamedPipe(m_read_pipe, &read_overlapped))
{
const auto lastError = GetLastError();
if (lastError == ERROR_IO_PENDING)
{
read_pipe_pending = true;
}
else if (lastError != ERROR_PIPE_CONNECTED)
{
Logger::error(L"Error connecting IN pipe");
CloseHandle(write_overlapped.hEvent);
CloseHandle(read_overlapped.hEvent);
CloseHandle(hWritePipe);
CloseHandle(m_read_pipe);
m_read_pipe = nullptr;
return E_FAIL;
}
}
// Wait for both pipes to connect (with timeout)
HANDLE wait_handles[2] = { write_overlapped.hEvent, read_overlapped.hEvent };
DWORD wait_result = WaitForMultipleObjects(2, wait_handles, TRUE, client_timeout_millis);
CloseHandle(write_overlapped.hEvent);
CloseHandle(read_overlapped.hEvent);
if (wait_result == WAIT_OBJECT_0)
{
// Pipe connected successfully
// Both pipes connected successfully
m_write_pipe = std::make_unique<CAtlFile>(hWritePipe);
CloseHandle(write_overlapped.hEvent);
Logger::trace(L"PowerDisplay command pipe connected successfully");
Logger::trace(L"PowerDisplay bidirectional pipes connected successfully (OUT: {}, IN: {})",
m_pipe_name_out, m_pipe_name_in);
return S_OK;
}
else
{
Logger::error(L"Timeout waiting for PowerDisplay to connect to command pipe");
CloseHandle(write_overlapped.hEvent);
Logger::error(L"Timeout waiting for PowerDisplay to connect to pipes");
CloseHandle(hWritePipe);
CloseHandle(m_read_pipe);
m_read_pipe = nullptr;
return E_FAIL;
}
}
@@ -234,15 +305,18 @@ void PowerDisplayProcessManager::refresh()
return;
}
if (start_command_pipe(pipe_uuid.value()) != S_OK)
// FIX BUG #1: Start process FIRST, then create pipes
// This ensures PowerDisplay.exe is running when pipes try to connect
if (start_process(pipe_uuid.value()) != S_OK)
{
Logger::error(L"Failed to initialize command pipe");
Logger::error(L"Failed to start PowerDisplay process");
return;
}
if (start_process(pipe_uuid.value()) != S_OK)
// Now create pipes and wait for PowerDisplay to connect
if (start_command_pipe(pipe_uuid.value()) != S_OK)
{
Logger::error(L"Failed to start PowerDisplay process, cleaning up pipes");
Logger::error(L"Failed to initialize command pipes, terminating process");
terminate_process();
}
}

View File

@@ -16,12 +16,14 @@ class PowerDisplayProcessManager
{
private:
HANDLE m_hProcess = nullptr;
std::unique_ptr<CAtlFile> m_write_pipe; // Write to PowerDisplay (OUT)
std::unique_ptr<CAtlFile> m_write_pipe; // Write to PowerDisplay (OUT pipe)
HANDLE m_read_pipe = nullptr; // Read from PowerDisplay (IN pipe) - for bidirectional support
OnThreadExecutor m_thread_executor;
bool m_enabled = false;
// Pipe name for this session
// Pipe names for this session
std::wstring m_pipe_name_out;
std::wstring m_pipe_name_in;
public:
PowerDisplayProcessManager() = default;

View File

@@ -40,6 +40,12 @@ namespace
const wchar_t JSON_KEY_PROPERTIES[] = L"properties";
const wchar_t JSON_KEY_ENABLED[] = L"enabled";
const wchar_t JSON_KEY_HOTKEY_ENABLED[] = L"hotkey_enabled";
const wchar_t JSON_KEY_ACTIVATION_SHORTCUT[] = L"ActivationShortcut";
const wchar_t JSON_KEY_WIN[] = L"win";
const wchar_t JSON_KEY_ALT[] = L"alt";
const wchar_t JSON_KEY_CTRL[] = L"ctrl";
const wchar_t JSON_KEY_SHIFT[] = L"shift";
const wchar_t JSON_KEY_CODE[] = L"code";
}
class PowerDisplayModule : public PowertoyModuleIface
@@ -47,6 +53,7 @@ class PowerDisplayModule : public PowertoyModuleIface
private:
bool m_enabled = false;
bool m_hotkey_enabled = false;
Hotkey m_activation_hotkey = { .win = true, .ctrl = false, .shift = false, .alt = true, .key = 'M' };
// Process manager for handling PowerDisplay.exe lifecycle and IPC
PowerDisplayProcessManager m_process_manager;
@@ -82,6 +89,41 @@ private:
}
}
void parse_activation_hotkey(PowerToysSettings::PowerToyValues& settings)
{
auto settingsObject = settings.get_raw_json();
if (settingsObject.GetView().Size())
{
try
{
if (settingsObject.HasKey(JSON_KEY_PROPERTIES))
{
auto properties = settingsObject.GetNamedObject(JSON_KEY_PROPERTIES);
if (properties.HasKey(JSON_KEY_ACTIVATION_SHORTCUT))
{
auto jsonHotkeyObject = properties.GetNamedObject(JSON_KEY_ACTIVATION_SHORTCUT);
m_activation_hotkey.win = jsonHotkeyObject.GetNamedBoolean(JSON_KEY_WIN);
m_activation_hotkey.alt = jsonHotkeyObject.GetNamedBoolean(JSON_KEY_ALT);
m_activation_hotkey.shift = jsonHotkeyObject.GetNamedBoolean(JSON_KEY_SHIFT);
m_activation_hotkey.ctrl = jsonHotkeyObject.GetNamedBoolean(JSON_KEY_CTRL);
m_activation_hotkey.key = static_cast<unsigned char>(jsonHotkeyObject.GetNamedNumber(JSON_KEY_CODE));
Logger::trace(L"Parsed activation hotkey: Win={} Ctrl={} Alt={} Shift={} Key={}",
m_activation_hotkey.win, m_activation_hotkey.ctrl, m_activation_hotkey.alt,
m_activation_hotkey.shift, m_activation_hotkey.key);
}
else
{
Logger::info("ActivationShortcut not found in settings, using default Win+Alt+M");
}
}
}
catch (...)
{
Logger::error("Failed to parse PowerDisplay activation shortcut, using default Win+Alt+M");
}
}
}
void init_settings()
{
try
@@ -90,6 +132,7 @@ private:
PowerToysSettings::PowerToyValues::load_from_settings_file(get_key());
parse_hotkey_settings(settings);
parse_activation_hotkey(settings);
}
catch (std::exception&)
{
@@ -187,6 +230,7 @@ public:
PowerToysSettings::PowerToyValues::from_json_string(config, get_key());
parse_hotkey_settings(values);
parse_activation_hotkey(values);
values.save_to_settings_file();
// Notify PowerDisplay.exe that settings have been updated
@@ -237,6 +281,19 @@ public:
return false;
}
virtual size_t get_hotkeys(Hotkey* hotkeys, size_t buffer_size) override
{
if (m_activation_hotkey.key != 0)
{
if (hotkeys && buffer_size >= 1)
{
hotkeys[0] = m_activation_hotkey;
}
return 1;
}
return 0;
}
};
extern "C" __declspec(dllexport) PowertoyModuleIface* __cdecl powertoy_create()

View File

@@ -178,7 +178,7 @@ int runner(bool isProcessElevated, bool openSettings, std::string settingsWindow
L"PowerToys.CmdPalModuleInterface.dll",
L"PowerToys.ZoomItModuleInterface.dll",
L"PowerToys.LightSwitchModuleInterface.dll",
L"PowerToys.PowerDisplayExt.dll",
L"PowerToys.PowerDisplayModuleInterface.dll",
};
for (auto moduleSubdir : knownModules)

View File

@@ -4,13 +4,18 @@
using System.Collections.Generic;
using System.Text.Json.Serialization;
using Settings.UI.Library.Attributes;
namespace Microsoft.PowerToys.Settings.UI.Library
{
public class PowerDisplayProperties
{
[CmdConfigureIgnore]
public HotkeySettings DefaultActivationShortcut => new HotkeySettings(true, false, false, true, 0x4D); // Win+Alt+M
public PowerDisplayProperties()
{
ActivationShortcut = DefaultActivationShortcut;
LaunchAtStartup = false;
BrightnessUpdateRate = "1s";
Monitors = new List<MonitorInfo>();
@@ -20,6 +25,8 @@ namespace Microsoft.PowerToys.Settings.UI.Library
// which is managed separately by PowerDisplay app
}
public HotkeySettings ActivationShortcut { get; set; }
[JsonPropertyName("launch_at_startup")]
public bool LaunchAtStartup { get; set; }

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@@ -2,13 +2,16 @@
// 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.Generic;
using System.Text.Json.Serialization;
using ManagedCommon;
using Microsoft.PowerToys.Settings.UI.Library.Helpers;
using Microsoft.PowerToys.Settings.UI.Library.Interfaces;
namespace Microsoft.PowerToys.Settings.UI.Library
{
public class PowerDisplaySettings : BasePTModuleSettings, ISettingsConfig
public class PowerDisplaySettings : BasePTModuleSettings, ISettingsConfig, IHotkeyConfig
{
public const string ModuleName = "PowerDisplay";
@@ -28,5 +31,20 @@ namespace Microsoft.PowerToys.Settings.UI.Library
// This can be utilized in the future if the settings.json file is to be modified/deleted.
public bool UpgradeSettingsConfiguration()
=> false;
public ModuleType GetModuleType() => ModuleType.PowerDisplay;
public HotkeyAccessor[] GetAllHotkeyAccessors()
{
var hotkeyAccessors = new List<HotkeyAccessor>
{
new HotkeyAccessor(
() => Properties.ActivationShortcut,
value => Properties.ActivationShortcut = value ?? Properties.DefaultActivationShortcut,
"Activation_Shortcut"),
};
return hotkeyAccessors.ToArray();
}
}
}

View File

@@ -5503,6 +5503,10 @@ To record a specific window, enter the hotkey with the Alt key in the opposite m
<data name="PowerDisplay_Configuration_GroupSettings.Header" xml:space="preserve">
<value>Configuration</value>
</data>
<data name="PowerDisplay_ToggleWindow" xml:space="preserve">
<value>Toggle Power Display</value>
<comment>Dashboard: Label for the PowerDisplay activation hotkey</comment>
</data>
<data name="PowerDisplay_LaunchButtonControl.Header" xml:space="preserve">
<value>Open Power Display</value>
</data>

View File

@@ -232,6 +232,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
ModuleType.MouseJump => GetModuleItemsMouseJump(),
ModuleType.MousePointerCrosshairs => GetModuleItemsMousePointerCrosshairs(),
ModuleType.Peek => GetModuleItemsPeek(),
ModuleType.PowerDisplay => GetModuleItemsPowerDisplay(),
ModuleType.PowerLauncher => GetModuleItemsPowerLauncher(),
ModuleType.PowerAccent => GetModuleItemsPowerAccent(),
ModuleType.Workspaces => GetModuleItemsWorkspaces(),
@@ -510,6 +511,18 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
return new ObservableCollection<DashboardModuleItem>(list);
}
private ObservableCollection<DashboardModuleItem> GetModuleItemsPowerDisplay()
{
ISettingsRepository<PowerDisplaySettings> moduleSettingsRepository = SettingsRepository<PowerDisplaySettings>.GetInstance(new SettingsUtils());
var settings = moduleSettingsRepository.SettingsConfig;
var list = new List<DashboardModuleItem>
{
new DashboardModuleShortcutItem() { Label = resourceLoader.GetString("PowerDisplay_ToggleWindow"), Shortcut = settings.Properties.ActivationShortcut.GetKeysList() },
new DashboardModuleButtonItem() { ButtonTitle = resourceLoader.GetString("PowerDisplay_LaunchButtonControl/Header"), IsButtonDescriptionVisible = true, ButtonDescription = resourceLoader.GetString("PowerDisplay_LaunchButtonControl/Description"), ButtonGlyph = "ms-appx:///Assets/Settings/Icons/PowerDisplay.png", ButtonClickHandler = PowerDisplayLaunchClicked },
};
return new ObservableCollection<DashboardModuleItem>(list);
}
internal void SWVersionButtonClicked()
{
NavigationService.Navigate(typeof(GeneralPage));
@@ -547,6 +560,12 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
SendConfigMSG("{\"action\":{\"RegistryPreview\":{\"action_name\":\"" + actionName + "\", \"value\":\"\"}}}");
}
private void PowerDisplayLaunchClicked(object sender, RoutedEventArgs e)
{
var actionName = "Launch";
SendConfigMSG("{\"action\":{\"PowerDisplay\":{\"action_name\":\"" + actionName + "\", \"value\":\"\"}}}");
}
internal void DashboardListItemClick(object sender)
{
if (sender is SettingsCard card && card.Tag is ModuleType moduleType)