แก้ไข

แชร์ผ่าน


Keyboard.PreviewKeyboardInputProviderAcquireFocus Attached Event

Definition

Occurs when the keyboard input provider is in the process of acquiring focus.

see AddPreviewKeyboardInputProviderAcquireFocusHandler, and RemovePreviewKeyboardInputProviderAcquireFocusHandler
see AddPreviewKeyboardInputProviderAcquireFocusHandler, and RemovePreviewKeyboardInputProviderAcquireFocusHandler
see AddPreviewKeyboardInputProviderAcquireFocusHandler, and RemovePreviewKeyboardInputProviderAcquireFocusHandler

Remarks

This is an attached event. WPF implements attached events as routed events. Attached events are fundamentally a XAML language concept for referencing events that can be handled on objects that do not define that event, which WPF expands upon by also enabling the event to traverse a route. Attached events do not have a direct handling syntax in code; to attach handlers for a routed event in code, you use a designated Add*Handler method. For details, see Attached Events Overview.

Routed Event Information

Identifier field PreviewKeyboardInputProviderAcquireFocusEvent
Routing strategy Tunneling
Delegate KeyboardInputProviderAcquireFocusEventHandler

Applies to