Quote Originally Posted by mcenatie
In fact, when I'm designing my main window, I have only three menus. But when I run the application, there is one more menu ! MacOS X automatically adds this menu and I wan't to know if Qt provides function to modify this menu!!
If you include a preferences action in your menu bar (with a name like Options or Preferences), it will end up in the Mac OS X application menu (which will have the same title as your application, in bold). Otherwise, it functions exactly as it would when it appears in its normal place in a Windows or X11 app. Everything else - the design of the preferences dialog and processing it - is your job; Qt has a QSettings class to write preferences using either Carbon preferences (on OS X), the registry (on Windows) and an XML file (on X11).