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StylusPlugIn.OnStylusLeave(RawStylusInput, Boolean) Method

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Definition

Namespace:
System.Windows.Input.StylusPlugIns
Assembly:
PresentationCore.dll

Occurs on a pen thread when the cursor leaves the bounds of an element.

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)

Parameters

rawStylusInput
RawStylusInput

A RawStylusInput that contains information about input from the pen.

confirmed
Boolean

true if the pen actually left the bounds of the element; otherwise, false.

Examples

The following example resets the StylusPlugIn when the cursor leaves the bounds of the element.

// 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

Remarks

This method occurs on a pen thread, so minimize work in this method to avoid impacting performance.

Applies to