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

[Wine Bugs]

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

Summary: MDI children not positioned correctly because of
                    invisible parent
           Product: Wine
           Version: 0.9.10.
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-x11driver
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Wine does not send position changing messages to MDI children
having invisible parent. E.g., the messages WM_WINDOWPOSCHANGING,
WM_CHILDACTIVATE, WM_WINDOWPOSCHANGED. Windows sends such messages.

Some applications make the frame window client area invisible
during creation of MDI children, not to make the MDI child flicker
while it is initialized and positioned. Because messages are not sent,
the MDI children do not get positioned with Wine.

Shortly I will send a patch correcting this.