IncrementalLassoHitTester Class

 
System_CAPS_noteNote

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Dynamically hit tests a Stroke with a lasso.

Namespace:   System.Windows.Ink
Assembly:  PresentationCore (in PresentationCore.dll)

System.Object
  System.Windows.Ink.IncrementalHitTester
    System.Windows.Ink.IncrementalLassoHitTester

public class IncrementalLassoHitTester : IncrementalHitTester

NameDescription
System_CAPS_pubpropertyIsValid

Gets whether the IncrementalHitTester is hit testing.(Inherited from IncrementalHitTester.)

NameDescription
System_CAPS_pubmethodAddPoint(Point)

Adds a Point to the IncrementalHitTester.(Inherited from IncrementalHitTester.)

System_CAPS_pubmethodAddPoints(IEnumerable<Point>)

Adds points to the IncrementalHitTester.(Inherited from IncrementalHitTester.)

System_CAPS_pubmethodAddPoints(StylusPointCollection)

Adds the specified StylusPoint objects to the IncrementalHitTester.(Inherited from IncrementalHitTester.)

System_CAPS_protmethodAddPointsCore(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>).)

System_CAPS_pubmethodEndHitTesting()

Releases resources used by the IncrementalHitTester. (Inherited from IncrementalHitTester.)

System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_protmethodOnSelectionChanged(LassoSelectionChangedEventArgs)

This API supports the product infrastructure and is not intended to be used directly from your code. Raises the SelectionChanged event.

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubeventSelectionChanged

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);
    }
}

.NET Framework
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.

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