I am drawing ellipses using Graphics item in a window (with image in background) and aim to select ellipses using mouse clicks. However, it is not possible for me to select ellipses when they are overlapping. For example, if several ellipses overlap, I can only select the one which is bigger, not the one which are smaller and are (supposedly) inside the bigger ellipse. Can anyone provide some suggestions?

The problem is somewhat related to this http://www.qtcentre.org/threads/3737...o-mouse-events but I can not understand the suggestion on this forum well.