[dwm] Request help with patch

Hello,
I've written a patch that uses xpm images to draw the layout symbols, but I
don't know how to use a shape mask to make the transparent parts
transparent. Everything else seems to work fine. Also, I have another patch
that completely removes the bar. The only peculiarity with this patch is
that it was necessary to remove the call to XPending in the the main event
loop, otherwise processor usage would skyrocket. I haven't been programming
very long (let alone using xlib), so any help would be appreciated.

Thank you very much.