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How to add a menu to the qt menu bar?


Asked by Laurel Vincent on Dec 07, 2021 FAQ



Use QMenuBar::addMenu () to insert a menu into a menu bar. Context menus are usually invoked by some special keyboard key or by right-clicking. They can be executed either asynchronously with popup () or synchronously with exec ().
Consequently,
The QMenu::addSeparator () function creates and returns a new separator action, i.e. an action for which QAction::isSeparator () returns true, and adds the new action to the menu's list of actions. Note the Format menu. First of all, it is added as a submenu to the Edit Menu using QMenu 's addMenu () function.
Next, In this example, first all reference to QMenuBar object of top level window (which has to be a QMainWindow object) is stored. File menu is added to the menu bar by addMenu () method. An action button in the menu may be a string or a QAction object.
In fact,
Qt for macOS also provides a menu bar merging feature to make QMenuBar conform more closely to accepted macOS menu bar layout. The merging functionality is based on string matching the title of a QMenu entry. These strings are translated (using QObject::tr ()) in the "QMenuBar" context.
Additionally,
QMenu class provides a widget which can be added to menu bar. It is also used to create context menu and popup menu. Each QMenu object may contain one or more QAction objects or cascaded QMenu objects. To create a popup menu, PyQt API provides createPopupMenu() function.