InkCollectorGestureEventHandler Delegate
Represents the method that handles the Gesture event of an InkCollector object.
Assembly: Microsoft.Ink (in Microsoft.Ink.dll)
'Declaration Public Delegate Sub InkCollectorGestureEventHandler ( _ sender As Object, _ e As InkCollectorGestureEventArgs _ ) 'Usage Dim instance As New InkCollectorGestureEventHandler(AddressOf HandlerMethod)
Parameters
- sender
- Type: System.Object
The source InkCollector object of this event.
- e
- Type: Microsoft.Ink.InkCollectorGestureEventArgs
The InkCollectorGestureEventArgs object that contains the event data.
The Gesture event occurs when the user performs a predefined application gesture with the pen, which is recognized by an application gesture recognizer.
When you create an InkCollectorGestureEventHandler delegate, you identify the method that handles the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate.
When the CollectionMode property is set to GestureOnly, the timeout between when a user adds a gesture and when the Gesture event occurs is a fixed value that you cannot alter programmatically. Gesture recognition is faster in InkAndGesture mode.
To prevent the collection of ink while in InkAndGesture mode:
Set the CollectionMode property to InkAndGesture.
Process the gesture in the Gesture event.
To prevent the flow of ink while gesturing, set the DynamicRendering property to false.
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To recognize gestures, you must use an object or control that can collect ink. |
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The InkCollector object, the InkOverlay object, and the InkPicture control use the InkCollectorGestureEventHandler delegate to add a Gesture event handler. |
The event handler in this example displays application gesture information on a status bar label, statusLabelAppGesture.
Private Sub Event_OnApplicationGesture(ByVal sender As Object, ByVal e As InkCollectorGestureEventArgs) ' There might be more than one gesture passed in InkCollectorGestureEventArgs ' The gestures are arranged in order of confidence from most to least ' This event handler is only concerned with the first (most confident) gesture Dim G As Gesture = e.Gestures(0) ' we will use the gesture if it has confidence of strong or intermediate If G.Confidence = RecognitionConfidence.Intermediate Or _ G.Confidence = RecognitionConfidence.Strong Then Select Case G.Id Case ApplicationGesture.Left statusLabelAppGesture.Text = "Left" Case ApplicationGesture.Right statusLabelAppGesture.Text = "Right" Case ApplicationGesture.Up statusLabelAppGesture.Text = "Up" Case ApplicationGesture.Down statusLabelAppGesture.Text = "Down" End Select End If End Sub
Only application gestures in which you have expressed an interest will fire this event. In this example, the InkCollector object, mInkCollector expresses an interest in four gestures of the ApplicationGesture enumeration.
' set InkCollector interest in the Left, Right, Up, Down gestures mInkCollector.SetGestureStatus(ApplicationGesture.Left, True) mInkCollector.SetGestureStatus(ApplicationGesture.Right, True) mInkCollector.SetGestureStatus(ApplicationGesture.Up, True) mInkCollector.SetGestureStatus(ApplicationGesture.Down, True)
Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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