http://bugs.winehq.org/show_bug.cgi?id=10394
--- Comment #25 from Rein Klazes wijn@online.nl 2009-05-17 03:11:58 --- Sorry I missed this bug report. The OFN_ENABLESIZING flag is now implemented, but in a simplistic way: just the Browser view is resized, other control's are just moved down- or rightwards to get out of the way.
Your test program is still failing on wine:
cmndlg_test.c:173: Test failed: Couldn't get 2-th child control cmndlg_test.c:148: Test failed: 0-th control wasn't resized horizontally properly cmndlg_test.c:148: Test failed: 3-th control wasn't resized horizontally properly
Dunno about the first failure, happens here on windows XP as well compiled with Visual Studio 6, but the other two can be used for a better resizing fix.
How about submitting your test patch? If you need help let me know.