[Bug 8637] New: property sheets aren't modal

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=8637

Summary: property sheets aren't modal
           Product: Wine
           Version: 0.9.37.
          Platform: PC
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wine-misc
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Property sheets that should be modal aren't. So if a parent window creates a
property sheet window, users can still interact with the parent window on Wine,
whereas they cannot on Windows.

To illustrate this problem, I wrote a small test program. The test program
immediately creates a property sheet window. On Wine, you can close the program
by closing the parent window (with the white background) but you cannot on Windows.