scaling bitmaps for shaped windows

[Todd Fisher <toddf simosoftware com>]

Hi,
   I'd like to create a shaped window.
I created a bitmap in the gimp and have
attached/combined the bitmap with a window and can
see the new shapped window.  The one thing I'd to be able
to do is resize or scale the bitmap as the window resizes.

What would be a good approach for solving this problem?
I think I need to use a gdkpixbuf and scale the image, but
I'm unsure how to get my bitmap into a pixbuf or if that
is even the right approach.

thanks,
todd