Stylus.PreviewStylusUp 附加事件

定義

使用者將手寫筆移離平板電腦時發生。Occurs when the user lifts the stylus from the tablet.

see AddPreviewStylusUpHandler, and RemovePreviewStylusUpHandler
see AddPreviewStylusUpHandler, and RemovePreviewStylusUpHandler
see AddPreviewStylusUpHandler, and RemovePreviewStylusUpHandler

範例

下列範例示範如何判斷手寫筆在使用者從平板電腦中提起時的位置。The following example demonstrates how to determine the position of the stylus when the user lifts it from the tablet. 這個範例假設有一個TextBox呼叫textBox1 , 而且該PreviewStylusUp事件已連接到事件處理常式。This example assumes that there is a TextBox called textBox1 and that the PreviewStylusUp event is connected to the event handlers.

void textbox1_PreviewStylusUp(object sender, StylusEventArgs e)
{
    Point pos = e.GetPosition(textbox1);
    textbox1.AppendText("X: " + pos.X + " Y: " + pos.Y + "\n");
}
Private Sub textbox1_PreviewStylusUp(ByVal sender As Object, _
    ByVal e As StylusEventArgs) Handles textbox1.PreviewStylusUp

    Dim pos As Point = e.GetPosition(textbox1)
    textbox1.AppendText("X: " & pos.X & " Y: " & pos.Y & vbLf)

End Sub

備註

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. 附加事件基本上是一種XAMLXAML語言概念, 用來參考在不會定義事件的物件上處理的事件。An attached event is, fundamentally, a XAMLXAML language concept used to reference events that are handled on objects that do not, themselves, define events. WPFWPF進一步擴充附加事件的功能, 讓它能夠跨越路由。further expands an attached event's capabilities, allowing it 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, 請使用指定的 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, 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 PreviewStylusUpEvent
路由策略Routing strategy 建立Tunneling
Delegate - 委派Delegate StylusEventHandler

適用於

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