New function. Factor out code from gdk_window_shape_combine_mask().

New function. Factor out code from gdk_window_shape_combine_mask().

2006-02-20  Tor Lillqvist  <tml@novell.com>

	* gdk/win32/gdkwindow-win32.c (do_shape_combine_region): New
	function. Factor out code from gdk_window_shape_combine_mask().
	(gdk_window_shape_combine_region): Actually do something. Convert
	region to a HRGN and call do_shape_combine_region().
	(gdk_window_input_shape_combine_mask)
	(gdk_window_input_shape_combine_region)
	(gdk_window_set_child_input_shapes)
	(gdk_window_merge_child_input_shapes): New functions, dummy
	implementations.