Errors in gdkdrawable-win32.c

[Leo Alekseyev <dnquark gmail com>]

In building a recent Windows version of Xournal under the latest GTK
win32, I have run into difficulties rendering cursors due to the
following errors:

 (xournal.exe:3512): Gdk-WARNING **: gdkdrawable-win32.c:711: MaskBlt
failed: The operation completed successfully.
(xournal.exe:3512): Gdk-WARNING **: gdkdrawable-win32.c:714:
SelectObject failed: The operation completed successfully.

The code that renders cursors uses a GdkGC to draw a bitmapped cursor
onto a pixmap like so:
  gdk_gc_set_stipple(gc, source);
  gdk_gc_set_clip_mask(gc, mask);
  gdk_draw_rectangle(rgb_pixmap, gc, TRUE, 0, 0, width, height);

The errors above appear during a call to gdk_draw_rectangle.

The code I am working with was last known to compile (with win32)
under GTK 2.16.5

Incidentally, that code itself is a workaround to deal with GTK bug
541377 (https://bugzilla.gnome.org/show_bug.cgi?id=541377).

I have no previous experience dealing with cursors in GTK, so I am
stuck at the moment.  If the list has any suggestions about getting
cursors rendered from bitmaps in latest GTK under Windows, I'd love to
hear them!

--Leo