UIElement.PreviewDragLeave UIElement.PreviewDragLeave UIElement.PreviewDragLeave UIElement.PreviewDragLeave Event

定義

輸入系統報告其下以此項目作為拖曳來源的拖曳事件時發生。Occurs when the input system reports an underlying drag event with this element as the drag origin.

public:
 event System::Windows::DragEventHandler ^ PreviewDragLeave;
public event System.Windows.DragEventHandler PreviewDragLeave;
member this.PreviewDragLeave : System.Windows.DragEventHandler 
Public Custom Event PreviewDragLeave As DragEventHandler 

備註

此事件建立的別名DragDrop.PreviewDragLeave附加事件,此類別中,以便PreviewDragLeave屬於類別的成員清單時UIElement繼承為基底的項目。This event creates an alias for the DragDrop.PreviewDragLeave attached event for this class, so that PreviewDragLeave is part of the class members list when UIElement is inherited as a base element. 附加至事件處理常式PreviewDragLeave事件會附加至基礎DragDrop.PreviewDragLeave附加事件,並接收相同的事件資料執行個體。Event handlers that are attached to the PreviewDragLeave event are attached to the underlying DragDrop.PreviewDragLeave attached event and receive the same event data instance.

路由事件資訊Routed Event Information

識別項欄位Identifier field PreviewDragLeaveEvent
路由策略Routing strategy 通道Tunneling
Delegate - 委派Delegate DragEventHandler

適用於