IncrementalLassoHitTester Class

Definition

public ref class IncrementalLassoHitTester : System::Windows::Ink::IncrementalHitTester

public class IncrementalLassoHitTester : System.Windows.Ink.IncrementalHitTester

type IncrementalLassoHitTester = class
    inherit IncrementalHitTester

Public Class IncrementalLassoHitTester
Inherits IncrementalHitTester

Inheritance

Object

IncrementalHitTester

IncrementalLassoHitTester

Examples

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);
    }
}

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

Remarks

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

Properties

Methods

Events

Applies to