UIElement3D::PreviewLostKeyboardFocus Event


Occurs when the keyboard is no longer focused on this element.

Namespace:   System.Windows
Assembly:  PresentationCore (in PresentationCore.dll)

event KeyboardFocusChangedEventHandler^ PreviewLostKeyboardFocus {
	virtual void add(KeyboardFocusChangedEventHandler^ value) sealed;
	virtual void remove(KeyboardFocusChangedEventHandler^ value) sealed;

Because this event uses tunneling routing, the element that lost focus might be a child element instead of the element where the event handler is actually attached. Check the Source in the event data to determine the actual element that lost focus.

This event creates an alias for the Keyboard::PreviewLostKeyboardFocus attached event for this class, so that PreviewLostKeyboardFocus is part of the class members list when UIElement3D is inherited as a base element. Event handlers that are attached to the PreviewLostKeyboardFocus event are attached to the underlying Keyboard::PreviewLostKeyboardFocus attached event and receive the same event data instance.

PreviewLostKeyboardFocus is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

Identifier field


Routing strategy




.NET Framework
Available since 3.0
Return to top