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StrokeCollection.HitTest Method (IEnumerable<Point>, StylusShape)

Returns a collection of strokes that intersect with the specified path.

Namespace:  System.Windows.Ink
Assembly:  PresentationCore (in PresentationCore.dll)
public StrokeCollection HitTest(
	IEnumerable<Point> path,
	StylusShape stylusShape


Type: System.Collections.Generic.IEnumerable<Point>

An array to type Point that represents the path to be hit tested.

Type: System.Windows.Ink.StylusShape

The StylusShape that specifies the shape of eraserPath.

Return Value

Type: System.Windows.Ink.StrokeCollection
A StrokeCollection of strokes that intersect with path.

The following example changes the color of all the strokes that intersect the path that is created by the Point array. This example assumes that there is an InkPresenter called presenter.

private void HitTestWithEraser(Point[] points)
    RectangleStylusShape eraser = new RectangleStylusShape(3, 3, 0);

    StrokeCollection strokes = presenter.Strokes.HitTest(points, eraser);

    foreach (Stroke s in strokes)
        s.DrawingAttributes.Color = Colors.Purple;

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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