http://bugs.winehq.org/show_bug.cgi?id=11657
--- Comment #2 from LIGHTNING UK! lightning_uk@imgburn.com 2008-02-22 14:47:38 --- Well my program - ImgBurn - calls the MessageBox API with both those flags at one point or another. Obviously this isn't application specific though.
Those screenshots were taken having just done this quickly in code to test wine's handling of it (because I'd noticed it earlier on when I was doing something else)...
MessageBox(NULL, "Bug in wine?", "ImgBurn", MB_CANCELTRYCONTINUE);
and
MessageBox(NULL, "Bug in wine?", "ImgBurn", MB_RETRYCANCEL);