Drawing specific circles with Qt
<p>I need to draw many circles in sequence. When I draw next circle, the intersection with others should be hidden. Please give me an example code.</p>

<p><a href="http://i.stack.imgur.com/54kMN.png" rel="nofollow">On this picture firstly I draw "1" circle, then "2" circle, then "3" circle</a></p>