UIElement.PreviewStylusDown UIElement.PreviewStylusDown UIElement.PreviewStylusDown UIElement.PreviewStylusDown Event

定義

手寫筆在此項目上方且碰觸數位板時發生。Occurs when the stylus touches the digitizer while it is over this element.

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

實作

備註

此事件建立的別名Stylus.PreviewStylusDown附加事件,此類別中,以便PreviewStylusDown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 Stylus.PreviewStylusDown attached event for this class, so that PreviewStylusDown is part of the class members list when UIElement is inherited as a base element. 附加至事件處理常式PreviewStylusDown事件會附加至基礎Stylus.PreviewStylusDown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 PreviewStylusDown event are attached to the underlying Stylus.PreviewStylusDown attached event and receive the same event data instance.

觸控、 滑鼠及手寫筆輸入存在於特定的關聯性。Touch, mouse, and stylus input exist in a particular relationship. 如需詳細資訊,請參閱 < 輸入概觀For more information, see Input Overview.

路由事件資訊Routed Event Information

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

適用於