Wheelbarrow example with Gtkmm on DirectFB

[Phoenix Revived <phoenixrevived yahoo com>]

Hi,

I want to draw some irregular windows (i.e. non-rectangular). I tried compiling the Wheelbarrow example in this setup, but it comes up with a white rectangular background behind the wheelbarrow. I had understood that the masking trick used there would have got me the result I wanted. What am I missing (note this is on DirectFB not on X11).

Thanks for any help!