private void Rectangle_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
((FrameworkElement)sender).ReleaseMouseCapture();
resetColors();
currentResizingMode = resizingMode.none;
}
private void Rectangle_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
((FrameworkElement)sender).CaptureMouse();
currentResizingMode = (resizingMode)Enum.Parse(((Type)typeof(resizingMode)), ((FrameworkElement)sender).Tag.ToString(), true);
setColor((Rectangle)sender);
origin = new Point(e.StylusDevice.GetStylusPoints((UIElement)this.Parent)[0].X,
e.StylusDevice.GetStylusPoints((UIElement)this.Parent)[0].Y);
}