IncrementalLassoHitTester Class
Dynamically hit tests a Stroke with a lasso.
Assembly: PresentationCore (in PresentationCore.dll)
| Name | Description | |
|---|---|---|
![]() | IsValid | Gets whether the IncrementalHitTester is hit testing.(Inherited from IncrementalHitTester.) |
| Name | Description | |
|---|---|---|
![]() | AddPoint(Point) | Adds a Point to the IncrementalHitTester.(Inherited from IncrementalHitTester.) |
![]() | AddPoints(IEnumerable<Point>) | Adds points to the IncrementalHitTester.(Inherited from IncrementalHitTester.) |
![]() | AddPoints(StylusPointCollection) | Adds the specified StylusPoint objects to the IncrementalHitTester.(Inherited from IncrementalHitTester.) |
![]() | AddPointsCore(IEnumerable<Point>) | This API supports the product infrastructure and is not intended to be used directly from your code. Adds points to the IncrementalHitTester.(Overrides IncrementalHitTester.AddPointsCore(IEnumerable<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 the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | MemberwiseClone() | |
![]() | OnSelectionChanged(LassoSelectionChangedEventArgs) | This API supports the product infrastructure and is not intended to be used directly from your code. Raises the SelectionChanged event. |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() | SelectionChanged | Occurs when the lasso path selects or unselects an ink Stroke. |
The IncrementalLassoHitTester hit tests strokes by determining whether a lasso path surrounds it. Use the AddPoints 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
void selectionTester_SelectionChanged(object sender, LassoSelectionChangedEventArgs args) { // Change the color of all selected strokes to red. foreach (Stroke selectedStroke in args.SelectedStrokes) { selectedStroke.DrawingAttributes.Color = Colors.Red; selectedStrokes.Add(selectedStroke); } // Change the color of all unselected strokes to // their original color. foreach (Stroke unselectedStroke in args.DeselectedStrokes) { unselectedStroke.DrawingAttributes.Color = inkDA.Color; selectedStrokes.Remove(unselectedStroke); } }
Available since 3.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



