Mastering GUI Programming with Python

Creating an application menu

The application menu is a crucial feature for most applications, offering access to all the application's functionality in hierarchically organized drop-down menus.

We can create on easily using the QMainWindow.menuBar() method:

        menubar = self.menuBar()

The menuBar() method returns a QMenuBar object, and as with statusBar(), this method will give us the window's existing menu if it exists, or simply create a new one if it doesn't.

By default, the menu is blank, but we can add submenus using the menu bar's addMenu() method, like so:

        file_menu = menubar.addMenu('File')        edit_menu = menubar.addMenu('Edit')        help_menu = menubar.addMenu('Help')

addMenu() returns a QMenu object, which represents a drop-down submenu. ...