Stylus.StylusLeave Stylus.StylusLeave Stylus.StylusLeave Attached Event

定義

手寫筆游標離開項目的邊界時發生。Occurs when the stylus cursor leaves the bounds of an element.

see AddStylusLeaveHandler, and RemoveStylusLeaveHandler
see AddStylusLeaveHandler, and RemoveStylusLeaveHandler
see AddStylusLeaveHandler, and RemoveStylusLeaveHandler

範例

下列範例示範Button當手寫筆游標進入並離開其邊界時, 如何變更的色彩。The following example demonstrates how to change the color of a Button when the stylus cursor enters and leaves its bounds. 這個範例假設有Button一個呼叫button1 , StylusEnter且和StylusLeave事件已連接到事件處理常式。This example assumes that there is a Button called button1 and that the StylusEnter and StylusLeave events are connected to event handlers.

Brush originalColor;

void button1_StylusLeave(object sender, StylusEventArgs e)
{
    button1.Background = originalColor;
}

void button1_StylusEnter(object sender, StylusEventArgs e)
{
    originalColor = button1.Background; 
    button1.Background = Brushes.Gray;
}
Private originalColor As Brush

Private Sub button1_StylusLeave(ByVal sender As Object, ByVal e As StylusEventArgs) _
    Handles button1.StylusLeave

    button1.Background = originalColor

End Sub

Private Sub button1_StylusEnter(ByVal sender As Object, ByVal e As StylusEventArgs) _
    Handles button1.StylusEnter

    originalColor = button1.Background
    button1.Background = Brushes.Gray

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 StylusLeaveEvent
路由策略Routing strategy 直接Direct
Delegate - 委派Delegate StylusEventHandler

適用於

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