[Bug 4960] MDI children not positioned correctly because of invisible parent

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=4960

[e-mail] changed:

What    |Removed                     |Added
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Attachment #2311 is|0                           |1
           obsolete|                            |

------- Additional Comments From [e-mail]  2006-25-04 10:56 -------
Created an attachment (id=2339)
 --> (http://bugs.winehq.org/attachment.cgi?id=2339&action=view)
Testcase, addition to dlls/user/tests/msg.c test

There were defects in the previous patch; this one I carefully checked, it
should be OK.

It succeeds on Windows (I have Windows 2000), but fails on Wine.
Particularly, in the sequence WmMaximizeMDIchildInvisibleParentSeq
there are many discrepancies (and of different nature) between 
messages sent by Windows and by Wine.