private static PointDouble GetMouseCapturePoint(PaintDotNet.UI.FrameworkElement target) => ((PointDouble)target.GetValue(MouseCapturePointProperty));
public static bool GetIsDragging(PaintDotNet.UI.FrameworkElement target) => ((bool)target.GetValue(IsDraggingProperty));
public static bool GetIsPressed(PaintDotNet.UI.FrameworkElement target) => ((bool)target.GetValue(IsPressedProperty));
public static bool GetAllowDrag(PaintDotNet.UI.FrameworkElement target) => ((bool)target.GetValue(AllowDragProperty));