Shapes are not getting focus.

Hello,

I have a rectangle and ellipse as a child to canvas. When i use MyRectangle.GotFocus, it recieves the focus by pressing the "Tab" botton on keyboard ("Focusable" is set to True) . But when i click it with mouse, it didn't recieve at all ???

What can i do so that shapes can also Get or Lost focus with mouse.

Thanks.