http://bugs.winehq.org/show_bug.cgi?id=23866
--- Comment #10 from David Love dlove@nighton.net 2010-08-24 15:42:11 --- (In reply to comment #9)
(From update of attachment 30188 [details]) an implementation is commited (http://source.winehq.org/git/wine.git/?a=commit;h=6894af6fc0232d9ed7b62fa5e8...)
It still has the problem that it's forwarding 16-bit messages to a function expecting 32-bit messages...