https://learn.microsoft.com/en-us/dotnet/api/system.windows.input.keyboardfocuschangedeventargs.invokeeventhandler?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
KeyboardFocusChangedEventArgs.InvokeEventHandler(Delegate, Object) Method (System.Windows.Input) |...
Invokes event handlers in a type-specific way, which can increase event system efficiency.
delegateobjectmethodsystemwindows
https://learn.microsoft.com/en-us/dotnet/api/system.windows.input.keyboardfocuschangedeventargs?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0&redirectedfrom=MSDN
KeyboardFocusChangedEventArgs Class (System.Windows.Input) | Microsoft Learn
Provides data for LostKeyboardFocus and GotKeyboardFocus routed events, as well as related attached and Preview events.
class systemwindowsinputmicrosoftlearn
https://learn.microsoft.com/en-us/dotnet/api/system.windows.uielement.onpreviewlostkeyboardfocus?view=netframework-4.8.1
UIElement.OnPreviewLostKeyboardFocus(KeyboardFocusChangedEventArgs) Method (System.Windows) |...
Invoked when an unhandled PreviewKeyDown attached event reaches an element in its route that is derived from this class. Implement this method to add class...
methodsystemwindows
https://learn.microsoft.com/en-us/dotnet/api/system.windows.uielement.ongotkeyboardfocus?view=netframework-4.8.1
UIElement.OnGotKeyboardFocus(KeyboardFocusChangedEventArgs) Method (System.Windows) | Microsoft...
Invoked when an unhandled GotKeyboardFocus attached event reaches an element in its route that is derived from this class. Implement this method to add class...
methodsystemwindowsmicrosoft