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InkCanvas.IsGestureRecognizerAvailable Property

Gets (determines) whether the gesture recognition component is available on the user's system.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

public bool IsGestureRecognizerAvailable { get; }

Property Value

Type: System.Boolean
true if the recognition component is available; otherwise, false.

The following example demonstrates how to configure an InkCanvas to recognize application gestures.

// Add this code to the contstructor or OnLoaded method. 
if (inkCanvas1.IsGestureRecognizerAvailable)
{
    inkCanvas1.EditingMode = InkCanvasEditingMode.InkAndGesture;
    inkCanvas1.Gesture += new InkCanvasGestureEventHandler(inkCanvas1_Gesture);
    inkCanvas1.SetEnabledGestures(new ApplicationGesture[] 
                    {ApplicationGesture.Down, 
                     ApplicationGesture.ArrowDown,
                     ApplicationGesture.Circle});
}


...


void inkCanvas1_Gesture(object sender, InkCanvasGestureEventArgs e)
{
    ReadOnlyCollection<GestureRecognitionResult> gestureResults = 
        e.GetGestureRecognitionResults();

    // Check the first recognition result for a gesture. 
    if (gestureResults[0].RecognitionConfidence == 
        RecognitionConfidence.Strong)
    {
        switch (gestureResults[0].ApplicationGesture)
        {
            case ApplicationGesture.Down:
                // Do something. 
                break;
            case ApplicationGesture.ArrowDown:
                // Do something. 
                break;
            case ApplicationGesture.Circle:
                // Do something. 
                break;
        }

    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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