[Bug 3538] New: Augmented file open dialog: "Add" closes the dialog

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=3538

Summary: Augmented file open dialog: "Add" closes the dialog
           Product: Wine
           Version: 20050930
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-gui
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

I have an augmented open-file dialog, which has a "Add" (Hinzufügen) and a
"Ok"/Close (Ok) button. Initally the "Add" button is the default button and the
"Ok" button is disabled (grey).

Windows: If I click "Add" the files are added to the list at the bottom and the
dialog stays open. (The OK becomes enabled.)

Wine: If I click "Add" the dialog closes.

It seems as if internally, the "Add" button is treated as Ok/Close button.