ContentElement.PreviewGiveFeedback ContentElement.PreviewGiveFeedback ContentElement.PreviewGiveFeedback ContentElement.PreviewGiveFeedback Event

定義

拖放操作開始時發生。Occurs when a drag-and-drop operation is started.

public:
 event System::Windows::GiveFeedbackEventHandler ^ PreviewGiveFeedback;
public event System.Windows.GiveFeedbackEventHandler PreviewGiveFeedback;
member this.PreviewGiveFeedback : System.Windows.GiveFeedbackEventHandler 
Public Custom Event PreviewGiveFeedback As GiveFeedbackEventHandler 

備註

PreviewGiveFeedback事件可讓使用者視覺化回饋提供拖放作業期間修改滑鼠指標的外觀的拖曳事件的來源。The PreviewGiveFeedback event enables the source of a drag event to modify the appearance of the mouse pointer, in order to give the user visual feedback during a drag-and-drop operation.

此事件建立的別名DragDrop.PreviewGiveFeedback附加事件,此類別中,以便PreviewGiveFeedback屬於類別的成員清單時ContentElement繼承為基底的項目。This event creates an alias for the DragDrop.PreviewGiveFeedback attached event for this class, so that PreviewGiveFeedback is part of the class members list when ContentElement is inherited as a base element. 附加至事件處理常式PreviewGiveFeedback事件會附加至基礎DragDrop.PreviewGiveFeedback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 PreviewGiveFeedback event are attached to the underlying DragDrop.PreviewGiveFeedback 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 PreviewGiveFeedbackEvent
路由策略Routing strategy 通道Tunneling
Delegate - 委派Delegate GiveFeedbackEventHandler

適用於