UIElement.LostKeyboardFocus 事件


在键盘焦点不再位于此元素上时发生。Occurs when the keyboard is no longer focused on this element,.

 virtual event System::Windows::Input::KeyboardFocusChangedEventHandler ^ LostKeyboardFocus;
public event System.Windows.Input.KeyboardFocusChangedEventHandler LostKeyboardFocus;
member this.LostKeyboardFocus : System.Windows.Input.KeyboardFocusChangedEventHandler 
Public Custom Event LostKeyboardFocus As KeyboardFocusChangedEventHandler 



由于此事件使用冒泡路由,失去焦点的元素可能是子元素,而不是实际附加事件处理程序的元素。Because this event uses bubbling routing, the element that lost focus might be a child element instead of the element where the event handler is actually attached. 检查事件数据中的 Source,以确定失去焦点的实际元素。Check the Source in the event data to determine the actual element that lost focus.

此事件创建此类的 Keyboard.LostKeyboardFocus 附加事件的别名,以便在将 UIElement 作为基元素继承时,LostKeyboardFocus 是类成员列表的一部分。This event creates an alias for the Keyboard.LostKeyboardFocus attached event for this class, so that LostKeyboardFocus is part of the class members list when UIElement is inherited as a base element. 附加到 LostKeyboardFocus 事件的事件处理程序附加到基础 Keyboard.LostKeyboardFocus 附加事件,并接收相同的事件数据实例。Event handlers that are attached to the LostKeyboardFocus event are attached to the underlying Keyboard.LostKeyboardFocus attached event and receive the same event data instance.

路由事件信息Routed Event Information

标识符字段Identifier field LostKeyboardFocusEvent
路由策略Routing strategy 冒泡Bubbling
委托Delegate KeyboardFocusChangedEventHandler