UIElement.PreviewLostKeyboardFocus Event
Definition
Important
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Occurs when the keyboard is no longer focused on this element.
public:
virtual event System::Windows::Input::KeyboardFocusChangedEventHandler ^ PreviewLostKeyboardFocus;public event System.Windows.Input.KeyboardFocusChangedEventHandler PreviewLostKeyboardFocus;member this.PreviewLostKeyboardFocus : System.Windows.Input.KeyboardFocusChangedEventHandler Public Custom Event PreviewLostKeyboardFocus As KeyboardFocusChangedEventHandler Event Type
Implements
Remarks
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 UIElement 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.
Routed Event Information
| Item | Value |
|---|---|
| Identifier field | PreviewLostKeyboardFocusEvent |
| Routing strategy | Tunneling |
| Delegate | KeyboardFocusChangedEventHandler |
The corresponding bubbling event is LostKeyboardFocus.
Override OnPreviewLostKeyboardFocus to implement class handling for this event in derived classes.
