Activex control creation

I'm working on creating an ActiveX control which can be drawn as circle, rectangle etc on the form as a diagramming tool. The problem i face is that the control's "GotFocus" event doesnt make the control appear "Selected" as normally a control appears when we place it on a form (with borders selected). Can some one tell me how to make the control appear "Selected" during run time?

I think you would have to change the borders of your controls when it gets the focus.