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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)

'Declaration
Public ReadOnly Property IsGestureRecognizerAvailable As Boolean

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) Then

    inkCanvas1.EditingMode = InkCanvasEditingMode.InkAndGesture

    Dim gestures() As ApplicationGesture = _
                        {ApplicationGesture.Down, _
                         ApplicationGesture.ArrowDown, _
                         ApplicationGesture.Circle}

    inkCanvas1.SetEnabledGestures(gestures)
End If


...


Sub inkCanvas1_Gesture(ByVal sender As Object, _
    ByVal e As InkCanvasGestureEventArgs) Handles inkCanvas1.Gesture

    Dim gestureResults As ReadOnlyCollection(Of GestureRecognitionResult)
    gestureResults = e.GetGestureRecognitionResults()

    ' Check the first recognition result for a gesture. 
    If gestureResults(0).RecognitionConfidence = _
       RecognitionConfidence.Strong Then 

        Select Case gestureResults(0).ApplicationGesture
            Case ApplicationGesture.Down
                ' Do something. 
            Case ApplicationGesture.ArrowDown
                ' Do something. 
            Case ApplicationGesture.Circle
                ' Do something. 
        End Select 

    End If 

End Sub 'inkCanvas1_Gesture

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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