QMenuBar Class Reference
[QtGui module]

Examples

The Menus example shows how to use QMenuBar and QMenu. The other main window application examples also provide menus using these classes.

See also QMenu, QShortcut, QAction, Introduction to Apple Human Interface Guidelines, GUI Design Handbook: Menu Bar, and Menus Example.

Property Documentation

defaultUp : bool

This property holds the popup orientation.

The default popup orientation. By default, menus pop "down" the screen. By setting the property to true, the menu will pop "up". You might call this for menus that are below the document to which they refer.

If the menu would not fit on the screen, the other direction is used automatically.

Access functions:

• bool isDefaultUp () const
• void setDefaultUp ( bool )

Member Function Documentation

QMenuBar::QMenuBar ( QWidget * parent = 0 )

Constructs a menu bar with parent parent.

QMenuBar::~QMenuBar ()

Destroys the menu bar.

QAction * QMenuBar::activeAction () const

Returns the QAction that is currently highlighted. A null pointer will be returned if no action is currently selected.

See also setActiveAction().

QAction * QMenuBar::addAction ( const QString & text )

This convenience function creates a new action with text. The function adds the newly created action to the menu's list of actions, and returns it.

See also QWidget::addAction() and QWidget::actions().

QAction * QMenuBar::addAction ( const QString & text, const QObject * receiver, const char * member )

This is an overloaded member function, provided for convenience.

This convenience function creates a new action with the given text. The action's triggered() signal is connected to the receiver's member slot. The function adds the newly created action to the menu's list of actions and returns it.

See also QWidget::addAction() and QWidget::actions().

void QMenuBar::addAction ( QAction * action )

This is an overloaded member function, provided for convenience.

Appends the action action to the menu bar's list of actions.

See also QMenu::addAction(), QWidget::addAction(), and QWidget::actions().

QAction * QMenuBar::addMenu ( QMenu * menu )

Appends menu to the menu bar. Returns the menu's menuAction().

Note: The returned QAction object can be used to hide the corresponding menu.

See also QWidget::addAction() and QMenu::menuAction().

QMenu * QMenuBar::addMenu ( const QString & title )

This is an overloaded member function, provided for convenience.

Appends a new QMenu with title to the menu bar. The menu bar takes ownership of the menu. Returns the new menu.

See also QWidget::addAction() and QMenu::menuAction().

QMenu * QMenuBar::addMenu ( const QIcon & icon, const QString & title )

This is an overloaded member function, provided for convenience.

Appends a new QMenu with icon and title to the menu bar. The menu bar takes ownership of the menu. Returns the new menu.

See also QWidget::addAction() and QMenu::menuAction().

QAction * QMenuBar::addSeparator ()

Appends a separator to the menu.

void QMenuBar::clear ()

Removes all the actions from the menu bar.

See also removeAction().

QAction * QMenuBar::defaultAction () const

Returns the current default action.

This function was introduced in Qt 4.4.

See also setDefaultAction().

void QMenuBar::hovered ( QAction * action )   [signal]

This signal is emitted when a menu action is highlighted; action is the action that caused the event to be sent.

Often this is used to update status information.

See also triggered() and QAction::hovered().

void QMenuBar::initStyleOption ( QStyleOptionMenuItem * option, const QAction * action ) const   [protected]

Initialize option with the values from the menu bar and information from action. This method is useful for subclasses when they need a QStyleOptionMenuItem, but don't want to fill in all the information themselves.

See also QStyleOption::initFrom() and QMenu::initStyleOption().

QAction * QMenuBar::insertMenu ( QAction * before, QMenu * menu )

This convenience function inserts menu before action before and returns the menus menuAction().

See also QWidget::insertAction() and addMenu().

QAction * QMenuBar::insertSeparator ( QAction * before )

This convenience function creates a new separator action, i.e. an action with QAction::isSeparator() returning true. The function inserts the newly created action into this menu bar's list of actions before action before and returns it.

See also QWidget::insertAction() and addSeparator().

void QMenuBar::setActiveAction ( QAction * act )

Sets the currently highlighted action to act.

This function was introduced in Qt 4.1.

See also activeAction().

void QMenuBar::setDefaultAction ( QAction * act )

Sets the default action to act.

The default action is assigned to the left soft key. The menu is assigned to the right soft key.

Currently there is only support for the default action on Windows Mobile. All other platforms ignore the default action.

This function was introduced in Qt 4.4.

See also defaultAction().

void QMenuBar::triggered ( QAction * action )   [signal]

This signal is emitted when an action in a menu belonging to this menubar is triggered as a result of a mouse click; action is the action that caused the signal to be emitted.

Normally, you connect each menu action to a single slot using QAction::triggered(), but sometimes you will want to connect several items to a single slot (most often if the user selects from an array). This signal is useful in such cases.

See also hovered() and QAction::triggered().