StylusPlugIn.OnStylusLeave(RawStylusInput, Boolean) 方法

定義

命名空間:

System.Windows.Input.StylusPlugIns

組件:

PresentationCore.dll

當手寫筆游標離開項目的範圍時，發生於畫筆執行緒上。

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 -> unit

Protected Overridable Sub OnStylusLeave (rawStylusInput As RawStylusInput, confirmed As Boolean)

參數

rawStylusInput

RawStylusInput

包含畫筆輸入相關資訊的 RawStylusInput。

confirmed

Boolean

如果畫筆確實離開項目的界限則為 true，否則為 false。

範例

下列範例會在 StylusPlugIn 游標離開元素界限時重設 。

// 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

備註

這個方法發生在畫筆執行緒上，因此請將此方法中的工作降到最低，以避免影響效能。