Silverlight 5

WinRT

public sealed class DrawingAttributes
: DependencyObject, IManagedPeer, IManagedPeerBase, INativeCoreTypeWrapper
public Color Color { get; set; }
public Double Height { get; set; }
public Color OutlineColor { get; set; }
public Double Width { get; set; }

public sealed class Stroke
: DependencyObject, IManagedPeer, IManagedPeerBase, INativeCoreTypeWrapper
public DrawingAttributes DrawingAttributes { get; set; }
public StylusPointCollection StylusPoints { get; set; }
public Rect GetBounds();
public Boolean HitTest(StylusPointCollection stylusPointCollection);

public sealed class StrokeCollection
: PresentationFrameworkCollection`1<Stroke>, IManagedPeer, IManagedPeerBase, INativeCoreTypeWrapper, IList`1<Stroke>, ICollection`1<Stroke>, IEnumerable`1<Stroke>, IEnumerable, IList, ICollection
public Rect GetBounds();
public StrokeCollection HitTest(StylusPointCollection stylusPointCollection);