http://bugs.winehq.org/show_bug.cgi?id=26503
--- Comment #8 from Christian c_pradelli@yahoo.com 2011-04-28 10:46:44 CDT --- (In reply to comment #4)
The problem is that windows with WS_DISABLED style completely ignore all input including mouse clicks (and therefore can't be activated) under Windows, while X11 happily brings this kind of windows in front. Wine prevents activation of such windows, but nothing more.
Yes, taking a look in Delphi forms.pas I found than Delphi manage modal forms disabling all other forms, so only the remain active form can be used. If there is no way to prevent in X11 to bring disabled windows to front, I think that there is nothing to fix in wine. If all others agree with this, the bug could be closed.