ViewModels

ViewModels Reference

All ViewModels live in PadForge.App/ViewModels/ under the PadForge.ViewModels namespace. They use CommunityToolkit.Mvvm (ObservableObject, RelayCommand).

ViewModelBase

File: ViewModelBase.cs

Abstract base class for all PadForge ViewModels. Extends ObservableObject (which provides INotifyPropertyChanged and SetProperty helpers).

public abstract class ViewModelBase : ObservableObject
{
    public string Title { get; set; }
}

Property	Type	Description
`Title`	`string`	Display title for the view. Used by navigation and page headers.

Culture / Localization Support

ViewModelBase subscribes to Strings.CultureChanged in its constructor to support live language switching. When the user changes the UI language at runtime, Strings.ChangeCulture() raises CultureChanged, and every living ViewModel's OnCultureChanged() method is called. Derived ViewModels override OnCultureChanged() to refresh culture-dependent computed properties (status text, display titles, etc.).

Strings.CultureChanged uses a weak event pattern: instance-method subscribers are stored as (WeakReference<Target>, MethodInfo) pairs rather than strong delegates. This means short-lived ViewModels are eligible for garbage collection without needing to explicitly unsubscribe. Dead entries are pruned automatically on each raise. Static-method subscribers use strong references.

protected ViewModelBase()
{
    Strings.CultureChanged += OnCultureChanged;  // weak -- no GC leak
}

protected virtual void OnCultureChanged() { }

NavControllerItemViewModel

File: MainViewModel.cs (defined alongside MainViewModel)

ViewModel for a single virtual controller entry in the sidebar navigation. Displays the controller type icon, sequential slot number, and per-type instance label.

Property	Type	Description
`PadIndex`	`int`	Zero-based pad slot index (0-15). Read-only, set in constructor.
`Tag`	`string`	Navigation tag for this item (`"Pad1"`-`"Pad16"`). Computed as `$"Pad{PadIndex + 1}"`.
`SlotNumber`	`int`	Overall controller number among active slots (1-based).
`InstanceLabel`	`string`	Per-type instance number label (e.g., `"1"`, `"2"`).
`IconKey`	`string`	Resource key for the controller type icon (e.g., `"XboxControllerIcon"`, `"DS4ControllerIcon"`, `"VJoyControllerIcon"`, `"MidiControllerIcon"`, `"KeyboardMouseControllerIcon"`).
`IsEnabled`	`bool`	Whether this virtual controller is enabled (ViGEm active).
`ConnectedDeviceCount`	`int`	Number of mapped physical devices that are currently connected.
`IsInitializing`	`bool`	Whether the virtual controller for this slot is currently initializing.

XAML binding: Sidebar ListBox items bind to NavControllerItems collection on MainViewModel. Each item's template binds SlotNumber, InstanceLabel, IconKey (as DynamicResource), and IsEnabled for status indicators.

MainViewModel

File: MainViewModel.cs DataContext for: MainWindow

Root ViewModel for the application. Manages navigation state, the collection of 16 pad ViewModels, sidebar controller entries, and app-wide status information.

Child ViewModels

Property	Type	Description
`Pads`	`ObservableCollection<PadViewModel>`	The 16 virtual controller pad ViewModels (one per slot). Created in constructor.
`NavControllerItems`	`ObservableCollection<NavControllerItemViewModel>`	Sidebar navigation items for created virtual controller slots. Dynamically rebuilt by `RefreshNavControllerItems()`.
`Dashboard`	`DashboardViewModel`	Dashboard overview ViewModel.
`Devices`	`DevicesViewModel`	Devices list ViewModel.
`Settings`	`SettingsViewModel`	Application settings ViewModel.

Navigation Properties

Property	Type	Description
`SelectedNavTag`	`string`	Tag of the currently selected navigation item. Values: `"Dashboard"`, `"Pad1"`-`"Pad16"`, `"Devices"`, `"Settings"`, `"About"`. Setting this also raises `PropertyChanged` for `IsPadPageSelected` and `SelectedPadIndex`.
`IsPadPageSelected`	`bool`	True if a Pad page (Pad1-Pad16) is currently selected. Computed.
`SelectedPadIndex`	`int`	Zero-based pad index for the currently selected Pad page, or -1. Computed from `SelectedNavTag`.
`SelectedPad`	`PadViewModel`	The PadViewModel for the currently selected Pad page, or null. Computed.

App-wide Status Properties

Property	Type	Default	Description
`StatusText`	`string`	`"Ready"`	Status bar text displayed at the bottom of the main window.
`IsEngineRunning`	`bool`	`false`	Whether the input engine polling loop is currently active. Setting this calls `RefreshEngineStatus()`.
`HasActiveSlots`	`bool`	`false`	Whether any virtual controller slots are currently created. Setting this calls `RefreshEngineStatus()`.
`EngineStatusText`	`string`	-	Computed: `"Running"` / `"Idle"` / `"Stopped"` depending on `IsEngineRunning` and `HasActiveSlots`.
`EngineStatusBrush`	`Brush`	-	Computed: Green (#4CAF50) = Running, Amber (#FFB300) = Idle, Gray (#9E9E9E) = Stopped. Frozen brushes (thread-safe).
`PollingFrequency`	`double`	`0`	Current input polling frequency in Hz.
`ConnectedDeviceCount`	`int`	`0`	Number of currently connected input devices.
`IsViGEmInstalled`	`bool`	`false`	Whether the ViGEmBus driver is installed and available.

Commands

Command	CanExecute	Description
`StartEngineCommand`	`!IsEngineRunning`	Raises `StartEngineRequested` event. Wired by MainWindow code-behind.
`StopEngineCommand`	`IsEngineRunning`	Raises `StopEngineRequested` event.

Events

Event	Args	Description
`StartEngineRequested`	`EventArgs`	User requested starting the engine.
`StopEngineRequested`	`EventArgs`	User requested stopping the engine.
`NavControllerItemsRefreshed`	`EventArgs`	Raised after `RefreshNavControllerItems()` completes collection changes. MainWindow subscribes to this instead of `CollectionChanged` to avoid multiple rapid sidebar rebuilds.

Key Methods

Method	Description
`RefreshNavControllerItems()`	Rebuilds sidebar entries based on which slots are created (`SettingsManager.SlotCreated[]`). Computes per-type instance numbers (Xbox #1, DS4 #2, etc.) and updates each pad's `Title`, `SlotLabel`, and `TypeInstanceLabel`. Only triggers `NavControllerItemsRefreshed` when slots are added/removed.
`ForceNavControllerItemsRefreshed()`	Forces a `NavControllerItemsRefreshed` event even when slot count hasn't changed. Used after slot reorder/swap.
`RefreshEngineStatus()`	Raises `PropertyChanged` for `EngineStatusText` and `EngineStatusBrush`.
`RefreshCommands()`	Notifies `CanExecuteChanged` on start/stop commands. Call after `IsEngineRunning` changes.

DashboardViewModel

File: DashboardViewModel.cs DataContext for: Dashboard page

Shows an at-a-glance overview of all controller slots, engine status, connected devices, and driver status.

Slot Summaries

Property	Type	Description
`SlotSummaries`	`ObservableCollection<SlotSummary>`	Summary cards for created virtual controller slots. Rebuilt by `RefreshActiveSlots()`.
`ShowAddController`	`bool`	Whether the "Add Controller" card should be visible (any controller type has capacity).

Engine Status

Property	Type	Default	Description
`EngineStatus`	`string`	`"Stopped"`	Current engine status text (localized).
`EngineStateKey`	`string`	`"Stopped"`	Non-localized engine state key (`"Running"`, `"Stopped"`, `"Idle"`) for XAML DataTriggers.
`PollingFrequency`	`double`	`0`	Current polling frequency in Hz. Setting this also notifies `PollingFrequencyText`.
`PollingFrequencyText`	`string`	-	Computed: formatted polling frequency (e.g., `"987.3 Hz"`) or dash when zero.

Device Counts

Property	Type	Description
`TotalDevices`	`int`	Total number of detected input devices (online + offline).
`OnlineDevices`	`int`	Number of currently connected (online) input devices.
`MappedDevices`	`int`	Number of devices that have an active mapping to a pad slot.

Driver Status

Property	Type	Description
`IsViGEmInstalled`	`bool`	Whether ViGEmBus is installed. Setting this notifies `ViGEmStatusText`.
`ViGEmStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.
`ViGEmVersion`	`string`	ViGEmBus driver version string.
`IsHidHideInstalled`	`bool`	Whether HidHide is installed.
`HidHideStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.
`IsVJoyInstalled`	`bool`	Whether the vJoy driver is installed.
`VJoyStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.
`IsMidiServicesInstalled`	`bool`	Whether Windows MIDI Services is installed.
`MidiServicesStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.

DSU Motion Server

Property	Type	Default	Description
`EnableDsuMotionServer`	`bool`	`false`	Whether the DSU (cemuhook) motion server is enabled.
`DsuMotionServerPort`	`int`	`26760`	UDP port for the DSU motion server. Clamped to 1024-65535.
`DsuServerStatus`	`string`	`"Stopped"`	Current status of the DSU server.

Web Controller Server

Property	Type	Default	Description
`EnableWebController`	`bool`	`false`	Whether the web controller server is enabled.
`WebControllerPort`	`int`	`8080`	HTTP/WebSocket port. Clamped to 1024-65535.
`WebControllerStatus`	`string`	`"Stopped"`	Current status of the web controller server.
`WebControllerClientCount`	`int`	`0`	Number of currently connected web controller clients.

Key Methods

Method	Description
`RefreshActiveSlots(IList<int>, bool)`	Rebuilds `SlotSummaries` to only include active slots. Updates sequential display labels. Sets `ShowAddController`. Called from InputService.

SlotSummary

File: DashboardViewModel.cs (nested class)

Summary information for a single virtual controller slot, displayed as a card on the Dashboard page.

Property	Type	Default	Description
`PadIndex`	`int`	-	Zero-based pad slot index. Read-only.
`SlotLabel`	`string`	-	Display label (e.g., `"Virtual Controller 1"`).
`DeviceName`	`string`	`"No device"`	Name of the primary device mapped to this slot.
`IsActive`	`bool`	`false`	Whether this slot has at least one online mapped device.
`IsVirtualControllerConnected`	`bool`	`false`	Whether the ViGEm virtual controller is connected.
`IsInitializing`	`bool`	`false`	Whether the virtual controller is currently initializing.
`MappedDeviceCount`	`int`	`0`	Number of devices mapped to this slot.
`ConnectedDeviceCount`	`int`	`0`	Number of mapped devices that are currently connected.
`StatusText`	`string`	`"Idle"`	Status text (e.g., `"Active"`, `"Idle"`, `"No mapping"`, `"Disabled"`).
`IsEnabled`	`bool`	`true`	Whether this slot is enabled for ViGEm output.
`SlotNumber`	`int`	`1`	Overall controller number among active slots (1-based).
`TypeInstanceLabel`	`string`	`"1"`	Per-type instance number label.
`OutputType`	`VirtualControllerType`	`Xbox360`	The virtual controller output type.

SettingsViewModel

File: SettingsViewModel.cs DataContext for: Settings page

Manages application-level settings including theme, language, driver management, profiles, and engine configuration.

Theme

Property	Type	Default	Description
`SelectedThemeIndex`	`int`	`0`	0 = System, 1 = Light, 2 = Dark. Setting this raises `ThemeChanged` event.

Event	Args	Description
`ThemeChanged`	`int`	Raised when theme selection changes. Arg = theme index.

Language

Property	Type	Description
`AvailableLanguages`	`ObservableCollection<CultureInfo>`	Available UI languages: en, de, fr, ja, ko, zh-Hans, pt-BR, es, it, nl.
`SelectedLanguage`	`CultureInfo`	Currently selected UI language. Setting this applies the new language immediately via `Strings.ChangeCulture()`. Defaults to current UI culture or English.

Member	Type	Description
`LanguageCode`	`string`	Internal: persisted language code for serialization.
`SetLanguageFromCode(string)`	method	Internal: sets language from a persisted code on startup without raising `CultureChanged`.

Driver Status: ViGEmBus

Property	Type	Description
`IsViGEmInstalled`	`bool`	Whether ViGEmBus is installed. Setting this notifies `ViGEmStatusText` and refreshes install/uninstall commands.
`ViGEmStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.
`ViGEmVersion`	`string`	ViGEmBus driver version string.

Command	CanExecute	Description
`InstallViGEmCommand`	`!IsViGEmInstalled`	Raises `InstallViGEmRequested`.
`UninstallViGEmCommand`	`IsViGEmInstalled && !HasAnyViGEmSlots()`	Raises `UninstallViGEmRequested`.

Event	Description
`InstallViGEmRequested`	User requested ViGEmBus installation.
`UninstallViGEmRequested`	User requested ViGEmBus uninstallation.

Driver Status: HidHide

Property	Type	Description
`IsHidHideInstalled`	`bool`	Whether HidHide is installed.
`HidHideStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.
`HidHideVersion`	`string`	HidHide driver version string.
`HidHideWhitelistPaths`	`ObservableCollection<string>`	Application paths whitelisted in HidHide.
`SelectedWhitelistPath`	`string`	Currently selected whitelist path. Setting this refreshes `RemoveWhitelistPathCommand`.

Command	CanExecute	Description
`InstallHidHideCommand`	`!IsHidHideInstalled`	Raises `InstallHidHideRequested`.
`UninstallHidHideCommand`	`IsHidHideInstalled && !HasAnyHidHideDevices()`	Raises `UninstallHidHideRequested`.
`AddWhitelistPathCommand`	`IsHidHideInstalled`	Raises `AddWhitelistPathRequested`.
`RemoveWhitelistPathCommand`	`SelectedWhitelistPath != null`	Removes selected path and raises `WhitelistChanged`.

Event	Description
`InstallHidHideRequested`	User requested HidHide installation.
`UninstallHidHideRequested`	User requested HidHide uninstallation.
`AddWhitelistPathRequested`	User requested adding a whitelist path (opens file dialog).
`WhitelistChanged`	Whitelist was modified (add or remove).

Driver Status: vJoy

Property	Type	Description
`IsVJoyInstalled`	`bool`	Whether vJoy driver is installed and DLL is accessible.
`VJoyStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.
`VJoyVersion`	`string`	vJoy driver version string.

Command	CanExecute	Description
`InstallVJoyCommand`	`!IsVJoyInstalled`	Raises `InstallVJoyRequested`.
`UninstallVJoyCommand`	`IsVJoyInstalled && !HasAnyVJoySlots()`	Raises `UninstallVJoyRequested`.

Event	Description
`InstallVJoyRequested`	User requested vJoy installation.
`UninstallVJoyRequested`	User requested vJoy uninstallation.

Driver Status: Windows MIDI Services

Property	Type	Description
`IsMidiServicesInstalled`	`bool`	Whether Windows MIDI Services is available.
`MidiServicesStatusText`	`string`	Computed: `"Installed"` / `"Not installed"`.
`MidiServicesVersion`	`string`	MIDI Services version string.
`IsMidiOsSupported`	`bool`	Static: `true` if OS build >= 26100 (Win11 24H2).

Command	CanExecute	Description
`InstallMidiServicesCommand`	`!IsMidiServicesInstalled && IsMidiOsSupported`	Raises `InstallMidiServicesRequested`.
`UninstallMidiServicesCommand`	`IsMidiServicesInstalled && !HasAnyMidiSlots()`	Raises `UninstallMidiServicesRequested`.

Driver Uninstall Guards

Member	Type	Description
`HasAnyViGEmSlots`	`Func<bool>`	Internal. Set by MainWindow. Returns true if any slot uses ViGEm.
`HasAnyVJoySlots`	`Func<bool>`	Internal. Set by MainWindow. Returns true if any slot uses vJoy.
`HasAnyMidiSlots`	`Func<bool>`	Internal. Set by MainWindow. Returns true if any slot uses MIDI.
`HasAnyHidHideDevices`	`Func<bool>`	Internal. Set by MainWindow. Returns true if any device has HidHide enabled.
`RefreshDriverGuards()`	method	Re-evaluates uninstall button `CanExecute` state. Call after slot creation/deletion/type changes.

Engine Settings

Property	Type	Default	Description
`AutoStartEngine`	`bool`	`true`	Whether to auto-start the input engine on launch.
`MinimizeToTray`	`bool`	`false`	Whether to minimize to system tray instead of taskbar.
`StartMinimized`	`bool`	`false`	Whether to start the application minimized.
`StartAtLogin`	`bool`	`false`	Whether to auto-start PadForge at login.
`EnablePollingOnFocusLoss`	`bool`	`true`	Whether to continue polling when the application loses focus.
`PollingRateMs`	`int`	`1`	Target polling interval in milliseconds. Clamped to 1-16.
`EnableInputHiding`	`bool`	`true`	Global master switch for device hiding (HidHide + input hooks).

Settings File

Property	Type	Description
`SettingsFilePath`	`string`	Full path to the currently loaded settings file.
`HasUnsavedChanges`	`bool`	Whether there are unsaved changes.

Command	Description
`SaveCommand`	Raises `SaveRequested`.
`ReloadCommand`	Raises `ReloadRequested`.
`ResetCommand`	Raises `ResetRequested`.
`OpenSettingsFolderCommand`	Raises `OpenSettingsFolderRequested`.

Event	Description
`SaveRequested`	User requested saving.
`ReloadRequested`	User requested reloading from disk.
`ResetRequested`	User requested settings reset.
`OpenSettingsFolderRequested`	User wants to open the settings folder.

Diagnostic Info

Property	Type	Description
`SdlVersion`	`string`	SDL3 library version string.
`ApplicationVersion`	`string`	Application version string.
`RuntimeVersion`	`string`	.NET runtime version string.

Display Preferences

Property	Type	Default	Description
`Use2DControllerView`	`bool`	`false`	Whether to show the 2D controller view instead of 3D.

Profiles

Property	Type	Default	Description
`EnableAutoProfileSwitching`	`bool`	`false`	Whether auto-profile switching is enabled.
`ProfileItems`	`ObservableCollection<ProfileListItem>`	empty	List of profile entries for the UI.
`SelectedProfile`	`ProfileListItem`	`null`	Currently selected profile. Setting this refreshes delete/edit/load commands.
`ActiveProfileInfo`	`string`	`"Default"`	Display text for the currently active profile.

Command	CanExecute	Description
`NewProfileCommand`	always	Raises `NewProfileRequested`.
`SaveAsProfileCommand`	always	Raises `SaveAsProfileRequested`.
`DeleteProfileCommand`	`SelectedProfile != null && !IsDefault`	Raises `DeleteProfileRequested`.
`EditProfileCommand`	`SelectedProfile != null && !IsDefault`	Raises `EditProfileRequested`.
`LoadProfileCommand`	`SelectedProfile != null`	Raises `LoadProfileRequested` or `RevertToDefaultRequested` if default.

Event	Description
`RevertToDefaultRequested`	User requested reverting to default profile.
`NewProfileRequested`	User requested creating a new empty profile.
`SaveAsProfileRequested`	User requested saving current settings as a new profile.
`DeleteProfileRequested`	User requested deleting the selected profile.
`EditProfileRequested`	User requested editing the selected profile metadata.
`LoadProfileRequested`	User requested loading the selected profile.

Method	Description
`RefreshProfileCommands()`	Refreshes `CanExecute` state of delete/edit/load profile commands.

ProfileListItem

File: SettingsViewModel.cs (nested class)

Display item for a profile in the Settings page list.

Property	Type	Description
`Id`	`string`	Profile identifier.
`Name`	`string`	Display name.
`Executables`	`string`	Comma-separated exe names for auto-switching.
`TopologyLabel`	`string`	Summary of slot topology.
`HasNoSlots`	`bool`	Computed: true if all type counts are zero.
`XboxCount`	`int`	Number of Xbox 360 slots in this profile.
`DS4Count`	`int`	Number of DualShock 4 slots.
`VJoyCount`	`int`	Number of vJoy slots.
`MidiCount`	`int`	Number of MIDI slots.
`KbmCount`	`int`	Number of Keyboard+Mouse slots.
`IsDefault`	`bool`	Computed: true if `Id == "__default__"`.

Constant	Value	Description
`DefaultProfileId`	`"__default__"`	Sentinel ID for the built-in Default profile entry.

DevicesViewModel

File: DevicesViewModel.cs DataContext for: Devices page

Shows all detected input devices (online and offline) and raw input state for the selected device.

Device List

Property	Type	Description
`Devices`	`ObservableCollection<DeviceRowViewModel>`	All known devices. Updated by InputService when the device list changes.
`SelectedDevice`	`DeviceRowViewModel`	Currently selected device. Setting this notifies `HasSelectedDevice`, refreshes slot buttons, and refreshes assign/remove command state.
`HasSelectedDevice`	`bool`	Computed: `SelectedDevice != null`.

Device Counts

Property	Type	Description
`TotalCount`	`int`	Total number of detected devices.
`OnlineCount`	`int`	Number of currently connected devices.

Raw Input State Display (for selected device)

Property	Type	Description
`RawAxes`	`ObservableCollection<AxisDisplayItem>`	Structured axis values for visual display (progress bars).
`RawButtons`	`ObservableCollection<ButtonDisplayItem>`	Structured button states for visual display (circles).
`RawPovs`	`ObservableCollection<PovDisplayItem>`	Structured POV hat values for visual display (compass).
`KeyboardKeys`	`ObservableCollection<KeyboardKeyItem>`	Keyboard key layout items for visual keyboard display.
`IsKeyboardDevice`	`bool`	Whether the selected device is a keyboard.
`IsMouseDevice`	`bool`	Whether the selected device is a mouse.
`MouseMotionX`	`double`	Mouse X motion value.
`MouseMotionY`	`double`	Mouse Y motion value.
`MouseScrollIntensity`	`double`	Normalized scroll intensity (-1 to 1).
`SelectedButtonTotal`	`int`	Total number of buttons on the selected device.
`HasRawData`	`bool`	Whether raw state data is available.

Gyroscope / Accelerometer

Property	Type	Description
`HasGyroData`	`bool`	Whether gyroscope data is available.
`HasAccelData`	`bool`	Whether accelerometer data is available.
`GyroX`	`double`	Gyroscope X value.
`GyroY`	`double`	Gyroscope Y value.
`GyroZ`	`double`	Gyroscope Z value.
`AccelX`	`double`	Accelerometer X value.
`AccelY`	`double`	Accelerometer Y value.
`AccelZ`	`double`	Accelerometer Z value.

Dynamic Slot Assignment Buttons

Property	Type	Description
`ActiveSlotItems`	`ObservableCollection<SlotButtonItem>`	Dynamic list of virtual controller slot toggle buttons. Only includes created/active slots.

Commands

Command	CanExecute	Description
`RefreshCommand`	always	Raises `RefreshRequested`. Force-refreshes the device list.
`AssignToSlotCommand`	`HasSelectedDevice`	`RelayCommand<int>`. Raises `AssignToSlotRequested` with slot index (0-15).
`ToggleSlotCommand`	`HasSelectedDevice`	`RelayCommand<int>`. Toggles selected device's assignment to a slot. Raises `ToggleSlotRequested`.
`HideDeviceCommand`	`HasSelectedDevice`	Sets `SelectedDevice.IsHidden = true`, raises `HideDeviceRequested`.
`RemoveDeviceCommand`	`HasSelectedDevice`	Removes device from list, raises `RemoveDeviceRequested`.

Events

Event	Args	Description
`RefreshRequested`	`EventArgs`	Refresh requested.
`AssignToSlotRequested`	`int`	Device assigned to slot. Arg = slot index.
`ToggleSlotRequested`	`int`	Slot toggle requested. Arg = slot index.
`HideDeviceRequested`	`Guid`	Device hidden. Arg = instance GUID.
`RemoveDeviceRequested`	`Guid`	Device removed. Arg = instance GUID.
`DeviceHidingChanged`	`Guid`	Device's HidHide or ConsumeInput toggle changed.

Key Methods

Method	Description
`RebuildRawStateCollections(int, int, int, bool, bool)`	Internal. Rebuilds axis/button/POV collections for a new device. Handles keyboard layout and mouse special cases.
`ClearRawState()`	Internal. Clears all raw state display data.
`RefreshSlotButtons()`	Rebuilds `ActiveSlotItems` based on created slots and selected device's assignments.
`FindByGuid(Guid)`	Finds a `DeviceRowViewModel` by instance GUID.
`RefreshCounts()`	Updates `TotalCount` and `OnlineCount` from the `Devices` collection.
`NotifyDeviceHidingChanged(Guid)`	Raises `DeviceHidingChanged` event.