http://bugs.winehq.org/show_bug.cgi?id=17970
--- Comment #5 from John Voltz ninevoltz@metalink.net 2009-04-09 07:32:48 --- Looking at DXP a little closer, I notice that the combo boxes are not normal Windows combo boxes. They have the appearance of a combo box, but when you click the arrow button, it is actually a tiny popup scrolling list window that appears below the box, in exactly the same size as the combo box. Weird... And it steals the focus from the rest of the application, so that you can't do anything else until you select a list item.
Dmitry, can you email me with the name of your application off the record? Is it something I might have or can download to test?