IncrementalLassoHitTester Class
Dynamically hit tests a Stroke with a lasso.
Assembly: PresentationCore (in PresentationCore.dll)
The IncrementalLassoHitTester type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | IsValid | Gets whether the IncrementalHitTester is hit testing. (Inherited from IncrementalHitTester.) |
| Name | Description | |
|---|---|---|
![]() | AddPoint | Adds a Point to the IncrementalHitTester. (Inherited from IncrementalHitTester.) |
![]() | AddPoints(IEnumerable(Of Point)) | Adds points to the IncrementalHitTester. (Inherited from IncrementalHitTester.) |
![]() | AddPoints(StylusPointCollection) | Adds the specified StylusPoint objects to the IncrementalHitTester. (Inherited from IncrementalHitTester.) |
![]() | AddPointsCore | Infrastructure. Adds points to the IncrementalHitTester. (Overrides IncrementalHitTester.AddPointsCore(IEnumerable(Of Point)).) |
![]() | EndHitTesting | Releases resources used by the IncrementalHitTester. (Inherited from IncrementalHitTester.) |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | OnSelectionChanged | Infrastructure. Raises the SelectionChanged event. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
The IncrementalLassoHitTester hit tests strokes by determining whether a lasso path surrounds it. Use the AddPoints(Point()) method in the stylus events to add the points to the IncrementalLassoHitTester. When the points added to the IncrementalLassoHitTester selects or unselects a Stroke, the IncrementalLassoHitTester raises the SelectionChanged event
The following example demonstrates how to dynamically select strokes in a custom control. For the entire sample, see How to: Select Ink from a Custom Control
Private Sub selectionTester_SelectionChanged(ByVal sender As Object, _ ByVal args As LassoSelectionChangedEventArgs) ' Change the color of all selected strokes to red. For Each selectedStroke As Stroke In args.SelectedStrokes selectedStroke.DrawingAttributes.Color = Colors.Red selectedStrokes.Add(selectedStroke) Next selectedStroke ' Change the color of all unselected strokes to ' their original color. For Each unselectedStroke As Stroke In args.DeselectedStrokes unselectedStroke.DrawingAttributes.Color = inkDA.Color selectedStrokes.Remove(unselectedStroke) Next unselectedStroke End Sub 'selectionHT_StrokeHitChanged
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.



