IncrementalLassoHitTester Class
Dynamically hit tests a Stroke with a lasso.
Assembly: PresentationCore (in PresentationCore.dll)
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, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
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.