StylusPlugIn.OnStylusLeave(RawStylusInput, Boolean) 方法
定义
重要
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当光标离开元素的边界时在笔线程上发生。
protected:
virtual void OnStylusLeave(System::Windows::Input::StylusPlugIns::RawStylusInput ^ rawStylusInput, bool confirmed);protected virtual void OnStylusLeave (System.Windows.Input.StylusPlugIns.RawStylusInput rawStylusInput, bool confirmed);abstract member OnStylusLeave : System.Windows.Input.StylusPlugIns.RawStylusInput * bool -> unit
override this.OnStylusLeave : System.Windows.Input.StylusPlugIns.RawStylusInput * bool -> unitProtected Overridable Sub OnStylusLeave (rawStylusInput As RawStylusInput, confirmed As Boolean)参数
- rawStylusInput
- RawStylusInput
一个包含有关笔输入信息的 RawStylusInput。
- confirmed
- Boolean
如果笔确实离开了元素的边界，则为 true；否则为 false。
示例
以下示例重置 StylusPlugIn 游标离开元素边界时。
// StylusPointCollection that contains the stylus points of the current
// stroke.
StylusPointCollection points;
// Keeps track of the stylus to check whether two styluses are used on the
// digitizer.
int currentStylus;
' StylusPointCollection that contains the stylus points of the current
' stroke.
Private points As StylusPointCollection
' Keeps track of the stylus to check whether two styluses are used on the
' digitizer.
Private currentStylus As Integer
// If the element loses focus, stop collecting the points and don't
// perform gesture recognition.
protected override void OnStylusLeave(RawStylusInput rawStylusInput, bool confirmed)
{
if (confirmed)
{
// Clear the StylusPointCollection
points = null;
currentStylus = 0;
}
}
' If the element loses focus, stop collecting the points and don't
' perform gesture recognition.
Protected Overrides Sub OnStylusLeave(ByVal rawStylusInput As RawStylusInput, ByVal confirmed As Boolean)
If confirmed Then
' Clear the StylusPointCollection
points = Nothing
currentStylus = 0
End If
End Sub
注解
此方法在笔线程上发生，因此尽量减少此方法中的工作，以避免影响性能。