Greetings all,

In my application,user can open several QWindows which share the same data.I needed to use one shared QUndoStack between the windows.

Undo/Redo works fine,but when any of a QWindow closed, Undo/Redo menu get disabled.I guess its because the stack get cleared.

Any tips? Thanks

Here is a snapshot of my application - http://oi53.tinypic.com/2rfbztg.jpg