In Qt parent objects are deleteing their children. So if your QMenu object was a child of the QMenuBar, then deleting QMenuBar also deletes QMenu - so then you tried to delete QMenu again so the app crashed.
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Re: Question about "delete" on QMenuBar instance..
In Qt parent objects are deleteing their children. So if your QMenu object was a child of the QMenuBar, then deleting QMenuBar also deletes QMenu - so then you tried to delete QMenu again so the app crashed.
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