"Owner-draw" Radio Button

I want to create “owner draw” radio buttons. If I select Push Like style for a radio button I can put a bitmap on this button. The problem is that the bitmap doesn’t cover the entire button. The edges of the button are still shown. (The same effect occurs when setting a bitmap on a CBitmapButton button but CBitmapButton can be set to Owner-Draw style, what nicely solves the problem). Radio button doesn’t accept Owner-Draw style. So how to create an “owner-draw” radio button where I could assign down, up, focus and disable bitmaps?

Thanks in advance.

Jerzy