# This will create the correct cairo surface, but I need to associate it with the button image
        # self is a gtk.Button instance
        sensitive = (self.state != gtk.STATE_INSENSITIVE)
        surface = self._buffer.get_surface(sensitive, self)

        allocation = self.get_allocation()
        if self.window is not None:
            cr = self.window.cairo_create()
            cr.set_source_surface(surface, allocation.x, allocation.y)
            cr.paint()