#490 – Using the InkCanvas to Recognize Gestures, part II

With the EditingMode of an InkCanvas set to GestureOnly or to InkAndGesture, the InkCanvas will attempt to recognize any gestures drawn using a mouse or a stylus.

You can handle the Gesture event of an InkCanvas and then call the GetGestureRecognitionResults to get a list of candidate gestures that the InkCanvas thinks that you drew.  In the example below, we get this list of gestures and dump them out to a debug window.

        private void ink_Gesture(object sender, InkCanvasGestureEventArgs e)
        {
            ReadOnlyCollection<GestureRecognitionResult> gestures = e.GetGestureRecognitionResults();

            foreach (GestureRecognitionResult gest in gestures)
            {
                Trace.WriteLine(string.Format("Gesture: {0}, Confidence: {1}", gest.ApplicationGesture, gest.RecognitionConfidence));
            }
        }

Below are some example gestures, followed by the list of GestureRecognitionResult objects. Each has a Confidence property that indicates how confident .NET is of the suggested result.

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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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