title: How can I get element from given point on canvas?
body: <p>I need to get element from canvas by given point.<br>
  For example I have Rectangle on Canvas, which CanvasLeft and CanvasTop values are setted to some values.<br>
  I whant get element from canvas which CanvasLeft and CanvasTop vaules are for example 10 and 40.<br>
  Is it possible?<br>
  Thanks.</p>