UIElement.LostMouseCapture 事件


此元素失去滑鼠擷取時發生。Occurs when this element loses mouse capture.

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



當專案捕捉到滑鼠時,即使指標超出其範圍,也會收到滑鼠輸入。When an element captures the mouse, it receives mouse input even if the pointer is outside its bounds. 通常只會在拖放作業期間捕捉滑鼠。The mouse is typically captured only during drag-and-drop operations.

因為此事件使用反升路由,所以遺失 capture 的元素可能是子項目,而不是實際附加事件處理常式的專案。Because this event uses bubbling routing, the element that loses capture might be a child element instead of the element where the event handler is actually attached. 檢查事件資料中的 Source,以判斷遺失 capture 的實際元素。Check the Source in the event data to determine the actual element that lost capture.

這個事件會為這個類別建立 Mouse.LostMouseCapture 附加事件的別名,因此,當 UIElement 繼承為基底專案時,LostMouseCapture 就是類別成員清單的一部分。This event creates an alias for the Mouse.LostMouseCapture attached event for this class, so that LostMouseCapture is part of the class members list when UIElement is inherited as a base element. 附加至 LostMouseCapture 事件的事件處理常式會附加至基礎 Mouse.LostMouseCapture 附加事件,並接收相同的事件資料實例。Event handlers that are attached to the LostMouseCapture event are attached to the underlying Mouse.LostMouseCapture attached event and receive the same event data instance.

路由事件資訊Routed Event Information

識別碼欄位Identifier field LostMouseCaptureEvent
路由策略Routing strategy 路由Bubbling
Delegate - 委派Delegate MouseEventHandler
  • 沒有已定義的對應通道事件。There is no defined corresponding tunneling event.

  • 覆寫 OnLostMouseCapture,以在衍生類別中為這個事件執行類別處理。Override OnLostMouseCapture to implement class handling for this event in derived classes.