I can't seem to find a way to create a transparent Bitmap Button.

I can do it with with an image list by setting a MASK colour (MAGENTA in
this case)

        m_ImageList.Create(IDB_SMALLFULL, 12, 1, RGB(255,0,255));
        m_ImageList.SetBkColor(CLR_NONE);

I am loading the bitmaps using :
        m_FullBtn.LoadBitmaps(IDB_FULL_UP, DB_FULL_DOWN);

but then I can't add a mask !!

Any help would be appreciated !!

Thanks.