Mouse.PreviewMouseWheel 附加事件

定義

發生於旋轉滑鼠滾輪時。Occurs when the mouse wheel rotates.

see AddPreviewMouseWheelHandler, and RemovePreviewMouseWheelHandler
see AddPreviewMouseWheelHandler, and RemovePreviewMouseWheelHandler
see AddPreviewMouseWheelHandler, and RemovePreviewMouseWheelHandler

備註

焦點或滑鼠捕捉的優先順序高於滑鼠指標所在的位置;因此, 如果您是從焦點或已捕捉的元素接收此事件, 則滑鼠指標實際上可能是在另一個元素的同時。Focus or mouse capture take precedence over where the mouse pointer is; therefore, if you receive this event from a focused or captured element, the mouse pointer might in fact be over another element at the time.

這是附加事件。This is an attached event. WPFWPF將附加事件實作為路由事件。implements attached events as routed events. 附加事件基本上是參考XAMLXAML事件的一種語言概念, 可以在未定義該事件的物件上處理, 這WPFWPF也會讓事件通過路由來進行擴充。Attached events are fundamentally a XAMLXAML language concept for referencing events that can be handled on objects that do not define that event, which WPFWPF expands upon by also enabling the event to traverse a route. 附加事件在程式碼中沒有直接處理語法;若要在程式碼中附加路由事件的處理常式, 您可以使用指定的 Add * 處理常式方法。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. 如需詳細資訊, 請參閱附加事件總覽For details, see Attached Events Overview.

路由事件資訊Routed Event Information

識別碼欄位Identifier field PreviewMouseWheelEvent
路由策略Routing strategy 建立Tunneling
Delegate - 委派Delegate MouseWheelEventHandler

適用於