The QMenuBar class provides a horizontal menu bar. More...

Inheritance diagram for QMenuBar:

Public Signals
void	hovered (QAction *action)

void	triggered (QAction *action)

Public Signals inherited from QWidget
void	customContextMenuRequested (const QPoint &pos)

void	windowIconChanged (const QIcon &icon)

void	windowIconTextChanged (const QString &iconText)

void	windowTitleChanged (const QString &title)

Public Signals inherited from QObject
void	destroyed (QObject *obj=nullptr)

void	objectNameChanged (const QString &objectName)

Public Slots
void	setVisible (bool visible)

Public Slots inherited from QWidget
bool	close ()

void	hide ()

void	lower ()

void	raise ()

void	repaint ()

void	setDisabled (bool disable)

void	setEnabled (bool enable)

void	setFocus ()

void	setHidden (bool hidden)

void	setStyleSheet (const QString &styleSheet)

virtual void	setVisible (bool visible)

void	setWindowModified (bool modified)

void	setWindowTitle (const QString &title)

void	show ()

void	showFullScreen ()

void	showMaximized ()

void	showMinimized ()

void	showNormal ()

void	update ()

Public Slots inherited from QObject
void	deleteLater ()

Public Methods
	QMenuBar (QWidget *parent=nullptr)

	~QMenuBar ()

QAction *	actionAt (const QPoint &point) const

QRect	actionGeometry (QAction *action) const

QAction *	activeAction () const

QAction *	addAction (const QString &text)

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

void	addAction (QAction *action)

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

QMenu *	addMenu (const QString &title)

QAction *	addMenu (QMenu *menu)

QAction *	addSeparator ()

void	clear ()

QWidget *	cornerWidget (Qt::Corner corner=Qt::TopRightCorner) const

int	heightForWidth (int width) const override

QAction *	insertMenu (QAction before, QMenu menu)

QAction *	insertSeparator (QAction *before)

bool	isDefaultUp () const

bool	isNativeMenuBar () const

QSize	minimumSizeHint () const override

QPlatformMenuBar *	platformMenuBar ()

void	setActiveAction (QAction *action)

void	setCornerWidget (QWidget *widget, Qt::Corner corner=Qt::TopRightCorner)

void	setDefaultUp (bool enabled)

void	setNativeMenuBar (bool nativeMenuBar)

QSize	sizeHint () const override

NSMenu *	toNSMenu ()

Public Methods inherited from QWidget
	QWidget (QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag)

	~QWidget ()

bool	acceptDrops () const

QString	accessibleDescription () const

QString	accessibleName () const

QList< QAction * >	actions () const

void	activateWindow ()

void	addAction (QAction *action)

void	addActions (const QList< QAction * > &actions)

void	adjustSize ()

bool	autoFillBackground () const

QPalette::ColorRole	backgroundRole () const

QBackingStore *	backingStore () const

QSize	baseSize () const

QWidget *	childAt (const QPoint &position) const

QWidget *	childAt (int x, int y) const

QRect	childrenRect () const

QRegion	childrenRegion () const

void	clearFocus ()

void	clearMask ()

QMargins	contentsMargins () const

QRect	contentsRect () const

Qt::ContextMenuPolicy	contextMenuPolicy () const

QCursor	cursor () const

WId	effectiveWinId () const

void	ensurePolished () const

Qt::FocusPolicy	focusPolicy () const

QWidget *	focusProxy () const

QWidget *	focusWidget () const

const QFont &	font () const

QFontInfo	fontInfo () const

QFontMetrics	fontMetrics () const

QPalette::ColorRole	foregroundRole () const

QRect	frameGeometry () const

QSize	frameSize () const

const QRect &	geometry () const

void	getContentsMargins (int left, int top, int right, int bottom) const

QPixmap	grab (const QRect &rectangle=QRect (QPoint (0, 0), QSize (-1,-1)))

void	grabGesture (Qt::GestureType gestureType, Qt::GestureFlags flags=Qt::GestureFlags ())

void	grabKeyboard ()

void	grabMouse ()

void	grabMouse (const QCursor &cursor)

int	grabShortcut (const QKeySequence &key, Qt::ShortcutContext context=Qt::WindowShortcut)

QGraphicsEffect *	graphicsEffect () const

QGraphicsProxyWidget *	graphicsProxyWidget () const

bool	hasEditFocus () const

bool	hasFocus () const

virtual bool	hasHeightForWidth () const

bool	hasMouseTracking () const

int	height () const

Qt::InputMethodHints	inputMethodHints () const

virtual QVariant	inputMethodQuery (Qt::InputMethodQuery query) const

void	insertAction (QAction before, QAction action)

void	insertActions (QAction before, QList< QAction > actions)

bool	isActiveWindow () const

bool	isAncestorOf (const QWidget *child) const

bool	isEnabled () const

bool	isEnabledTo (const QWidget *parent) const

bool	isEnabledToTLW () const

bool	isFullScreen () const

bool	isHidden () const

bool	isMaximized () const

bool	isMinimized () const

bool	isModal () const

bool	isTopLevel () const

bool	isVisible () const

bool	isVisibleTo (const QWidget *parent) const

bool	isWindow () const

bool	isWindowModified () const

QLayout *	layout () const

Qt::LayoutDirection	layoutDirection () const

QLocale	locale () const

QPoint	mapFrom (const QWidget *parent, const QPoint &pos) const

QPoint	mapFromGlobal (const QPoint &pos) const

QPoint	mapFromParent (const QPoint &pos) const

QPoint	mapTo (const QWidget *parent, const QPoint &pos) const

QPoint	mapToGlobal (const QPoint &pos) const

QPoint	mapToParent (const QPoint &pos) const

QRegion	mask () const

int	maximumHeight () const

QSize	maximumSize () const

int	maximumWidth () const

int	minimumHeight () const

QSize	minimumSize () const

int	minimumWidth () const

void	move (const QPoint &point)

void	move (int x, int y)

QWidget *	nativeParentWidget () const

QWidget *	nextInFocusChain () const

QRect	normalGeometry () const

void	overrideWindowFlags (Qt::WindowFlags flags)

QPaintEngine *	paintEngine () const override

const QPalette &	palette () const

QWidget *	parentWidget () const

QPoint	pos () const

QWidget *	previousInFocusChain () const

QRect	rect () const

void	releaseKeyboard ()

void	releaseMouse ()

void	releaseShortcut (int id)

void	removeAction (QAction *action)

void	render (QPaintDevice *target, const QPoint &targetOffset=QPoint (), const QRegion &sourceRegion=QRegion (), RenderFlags renderFlags=RenderFlags (DrawWindowBackground\|DrawChildren))

void	render (QPainter *painter, const QPoint &targetOffset=QPoint (), const QRegion &sourceRegion=QRegion (), RenderFlags renderFlags=RenderFlags (DrawWindowBackground\|DrawChildren))

void	repaint (const QRect &rect)

void	repaint (const QRegion &region)

void	repaint (int x, int y, int w, int h)

void	resize (const QSize &size)

void	resize (int w, int h)

bool	restoreGeometry (const QByteArray &geometry)

QByteArray	saveGeometry () const

void	scroll (int dx, int dy)

void	scroll (int dx, int dy, const QRect &rect)

void	setAcceptDrops (bool on)

void	setAccessibleDescription (const QString &description)

void	setAccessibleName (const QString &name)

void	setAttribute (Qt::WidgetAttribute attribute, bool enable=true)

void	setAutoFillBackground (bool enable)

void	setBackgroundRole (QPalette::ColorRole role)

void	setBaseSize (const QSize &size)

void	setBaseSize (int basew, int baseh)

void	setContentsMargins (const QMargins &margins)

void	setContentsMargins (int left, int top, int right, int bottom)

void	setContextMenuPolicy (Qt::ContextMenuPolicy policy)

void	setCursor (const QCursor &cursor)

void	setEditFocus (bool enable)

void	setFixedHeight (int h)

void	setFixedSize (const QSize &size)

void	setFixedSize (int w, int h)

void	setFixedWidth (int w)

void	setFocus (Qt::FocusReason reason)

void	setFocusPolicy (Qt::FocusPolicy policy)

void	setFocusProxy (QWidget *widget)

void	setFont (const QFont &font)

void	setForegroundRole (QPalette::ColorRole role)

void	setGeometry (const QRect &rect)

void	setGeometry (int x, int y, int w, int h)

void	setGraphicsEffect (QGraphicsEffect *effect)

void	setInputMethodHints (Qt::InputMethodHints hints)

void	setLayout (QLayout *layout)

void	setLayoutDirection (Qt::LayoutDirection direction)

void	setLocale (const QLocale &locale)

void	setMask (const QBitmap &bitmap)

void	setMask (const QRegion &region)

void	setMaximumHeight (int maxh)

void	setMaximumSize (const QSize &size)

void	setMaximumSize (int maxw, int maxh)

void	setMaximumWidth (int maxw)

void	setMinimumHeight (int minh)

void	setMinimumSize (const QSize &size)

void	setMinimumSize (int minw, int minh)

void	setMinimumWidth (int minw)

void	setMouseTracking (bool enable)

void	setPalette (const QPalette &palette)

void	setParent (QWidget *parent)

void	setParent (QWidget *parent, Qt::WindowFlags flags)

void	setShortcutAutoRepeat (int id, bool enable=true)

void	setShortcutEnabled (int id, bool enable=true)

void	setSizeIncrement (const QSize &size)

void	setSizeIncrement (int w, int h)

void	setSizePolicy (QSizePolicy policy)

void	setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical)

void	setStatusTip (const QString &data)

void	setStyle (QStyle *style)

void	setToolTip (const QString &data)

void	setToolTipDuration (int msec)

void	setUpdatesEnabled (bool enable)

void	setWhatsThis (const QString &str)

void	setWindowFilePath (const QString &filePath)

void	setWindowFlags (Qt::WindowFlags flags)

void	setWindowIcon (const QIcon &icon)

void	setWindowModality (Qt::WindowModality windowModality)

void	setWindowOpacity (qreal level)

void	setWindowRole (const QString &role)

void	setWindowState (Qt::WindowStates windowState)

QSize	size () const

QSize	sizeIncrement () const

QSizePolicy	sizePolicy () const

void	stackUnder (QWidget *widget)

QString	statusTip () const

QStyle *	style () const

QString	styleSheet () const

bool	testAttribute (Qt::WidgetAttribute attribute) const

QString	toolTip () const

int	toolTipDuration () const

QWidget *	topLevelWidget () const

bool	underMouse () const

void	ungrabGesture (Qt::GestureType gestureType)

void	unsetCursor ()

void	unsetLayoutDirection ()

void	unsetLocale ()

void	update (const QRect &rect)

void	update (const QRegion &region)

void	update (int x, int y, int w, int h)

void	updateGeometry ()

bool	updatesEnabled () const

QRegion	visibleRegion () const

QString	whatsThis () const

int	width () const

QWidget *	window () const

QString	windowFilePath () const

Qt::WindowFlags	windowFlags () const

QWindow *	windowHandle () const

QIcon	windowIcon () const

Qt::WindowModality	windowModality () const

qreal	windowOpacity () const

QString	windowRole () const

Qt::WindowStates	windowState () const

QString	windowTitle () const

Qt::WindowType	windowType () const

WId	winId () const

int	x () const

int	y () const

Public Methods inherited from QObject
	QObject (QObject *parent=nullptr)

	~QObject ()

bool	blockSignals (bool block)

const QList< QObject * > &	children () const

bool	connect (const QObject *sender, const QString &signalMethod, const QString &location, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	connect (const QObject *sender, const QString &signalMethod, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	disconnect (const QObject *receiver, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod, const QString &location, const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod=QString (), const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QString >	dynamicPropertyNames () const

virtual bool	event (QEvent *event)

virtual bool	eventFilter (QObject watched, QEvent event)

template<typename T >
T	findChild (const QString &childName=QString ()) const

template<class T >
QList< T >	findChildren (const QRegularExpression &regExp, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

template<class T >
QList< T >	findChildren (const QString &childName=QString (), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

bool	inherits (const QString &className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

QObject *	parent () const

template<class T = QVariant>
T	property (const QString &name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const QString &name, const QVariant &value)

bool	signalsBlocked () const

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)

QThread *	thread () const

Public Methods inherited from QPaintDevice
virtual	~QPaintDevice ()

int	colorCount () const

int	depth () const

int	devicePixelRatio () const

qreal	devicePixelRatioF () const

int	height () const

int	heightMM () const

int	logicalDpiX () const

int	logicalDpiY () const

bool	paintingActive () const

int	physicalDpiX () const

int	physicalDpiY () const

int	width () const

int	widthMM () const

Protected Methods
void	actionEvent (QActionEvent *event) override

void	changeEvent (QEvent *event) override

bool	event (QEvent *event) override

bool	eventFilter (QObject object, QEvent event) override

void	focusInEvent (QFocusEvent *event) override

void	focusOutEvent (QFocusEvent *event) override

void	initStyleOption (QStyleOptionMenuItem option, const QAction action) const

void	keyPressEvent (QKeyEvent *event) override

void	leaveEvent (QEvent *event) override

void	mouseMoveEvent (QMouseEvent *event) override

void	mousePressEvent (QMouseEvent *event) override

void	mouseReleaseEvent (QMouseEvent *event) override

void	paintEvent (QPaintEvent *event) override

void	resizeEvent (QResizeEvent *event) override

void	timerEvent (QTimerEvent *event) override

Protected Methods inherited from QWidget
virtual void	closeEvent (QCloseEvent *event)

virtual void	contextMenuEvent (QContextMenuEvent *event)

void	create (WId window=0, bool initializeWindow=true, bool destroyOldWindow=true)

void	destroy (bool destroyWindow=true, bool destroySubWindows=true)

virtual void	dragEnterEvent (QDragEnterEvent *event)

virtual void	dragLeaveEvent (QDragLeaveEvent *event)

virtual void	dragMoveEvent (QDragMoveEvent *event)

virtual void	dropEvent (QDropEvent *event)

virtual void	enterEvent (QEvent *event)

bool	event (QEvent *event) override

bool	focusNextChild ()

virtual bool	focusNextPrevChild (bool next)

bool	focusPreviousChild ()

virtual void	hideEvent (QHideEvent *event)

void	initPainter (QPainter *painter) const override

virtual void	inputMethodEvent (QInputMethodEvent *event)

virtual void	keyReleaseEvent (QKeyEvent *event)

int	metric (PaintDeviceMetric metric) const override

virtual void	mouseDoubleClickEvent (QMouseEvent *event)

virtual void	moveEvent (QMoveEvent *event)

virtual bool	nativeEvent (const QByteArray &eventType, void message, long result)

virtual void	showEvent (QShowEvent *event)

virtual void	tabletEvent (QTabletEvent *event)

virtual void	wheelEvent (QWheelEvent *event)

Protected Methods inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signalMethod) const

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signalMethod) const

bool	isSignalConnected (const QMetaMethod &signalMethod) const

int	receivers (const QString &signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Protected Methods inherited from QPaintDevice
	QPaintDevice ()

Properties
	defaultUp

	nativeMenuBar

Properties inherited from QWidget
	acceptDrops

	accessibleDescription

	accessibleName

	autoFillBackground

	baseSize

	childrenRect

	childrenRegion

	contextMenuPolicy

	cursor

	enabled

	focus

	focusPolicy

	font

	frameGeometry

	frameSize

	fullScreen

	geometry

	height

	inputMethodHints

	isActiveWindow

	layoutDirection

	locale

	maximized

	maximumHeight

	maximumSize

	maximumWidth

	minimized

	minimumHeight

	minimumSize

	minimumSizeHint

	minimumWidth

	modal

	mouseTracking

	normalGeometry

	palette

	pos

	rect

	size

	sizeHint

	sizeIncrement

	sizePolicy

	statusTip

	styleSheet

	toolTip

	updatesEnabled

	visible

	whatsThis

	width

	windowFilePath

	windowFlags

	windowIcon

	windowIconText

	windowModality

	windowModified

	windowOpacity

	windowTitle

	x

	y

Properties inherited from QObject
	objectName

Friends
class	QMenu

class	QWindowsStyle

Additional Inherited Members
Public Typedefs inherited from QWidget
using	RenderFlags = QFlags< RenderFlag >

Public Types inherited from QWidget
enum	RenderFlag

Public Types inherited from QPaintDevice
enum	PaintDeviceMetric

Static Public Methods inherited from QWidget
static QWidget *	createWindowContainer (QWindow window, QWidget parent=nullptr, Qt::WindowFlags flags=Qt::EmptyFlag)

static QWidget *	find (WId id)

static QWidget *	keyboardGrabber ()

static QWidget *	mouseGrabber ()

static void	setTabOrder (QWidget firstWidget, QWidget secondWidget)

Static Public Methods inherited from QObject
static bool	connect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

static bool	connect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection, const QString &location=QString ())

static bool	connect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...), Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotLambda, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, std::nullptr_t, const QObject receiver, std::nullptr_t)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...))

template<class Sender , class SignalClass , class... SignalArgs, class Receiver >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, std::nullptr_t slotMethod=nullptr)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotMethod)

static QMetaObject &	staticMetaObject ()

static QString	tr (const char text, const char comment=nullptr, std::optional< int > numArg=std::optional< int >())

Protected Slots inherited from QWidget
void	updateMicroFocus ()

Related Functions inherited from QWidget
	QWidgetList

	WId

Related Functions inherited from QObject
T	qobject_cast (QObject *object)

	QObjectList

Detailed Description

The QMenuBar class provides a horizontal menu bar. New menu items can be addedc to the menu bar by calling the addMenu() method. There is no need to lay out a menu bar. The geometry is adjusted automatically to match the parent widget.

Example 1

The following code creates two new menus and then adds them to a new menu bar.

QMenu *fileMenu = new *QMenu;
QMenu *helpMenu = new *QMenu;
 
QMenuBar *menubar = new QMenuBar(nullptr);
menubar->addMenu(fileMenu);
menubar->addMenu(helpeMenu);

Example 2

For a main window in a GUI application which inherits form QMainWindow, you can simple call the QMainWindow::menuBar() method to add a new menu item to the menu bar. Menu items may be removed by calling removeAction(). The ampersand in the menu file text sets Alt+F as a shortcut.

Widgets can be added to menus by using the QWidgetAction class.

QMenu *fileMenu = menuBar()->addMenu("&File");
fileMenu->addAction(openFile);
 
QMenu *helpMenu = menuBar()->addMenu("&Help");
helpMenu->addAction(about);

Platform Dependent Look and Feel

Different platforms have different requirements for the appearance of menu bars and their behavior when the user interacts with them. For example, Windows systems are often configured so that the underlined character mnemonics that indicate keyboard shortcuts for items in the menu bar are only shown when the Alt key is pressed.

QMenuBar on Mac OS X

QMenuBar on Mac OS X is a wrapper for using the system-wide menu bar. If you have multiple menu bars in one dialog the outermost menu bar (normally inside a widget with widget flag Qt::Window) will be used for the system-wide menu bar.

CopperSpice for Mac OS X also provides a menu bar merging feature to make QMenuBar conform more closely to accepted Mac OS X 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. If an entry is moved its slots will still fire as if it was in the original place. The table below outlines the strings looked for and where the entry is placed if matched.

The text used for the application name in the menu bar is obtained from the value set in the Info.plist file in the application's bundle. Refer to Deploying an Application on Mac OS X for more information.

String Matches	Placement	Notes
about*	About YourAppName	The application name is obtained from the Info.plist file, if it is not found then no About item will appear
config, options, setup, settings, preferences	Preferences	If not found the Settings item will be disabled
quit, exit	Quit application	If not found a default Quit item will be created to call QApplication::quit()

You can override this behavior by using the QAction::menuRole() property.

If you want every window in a Mac OS X application to share one menu bar, do not use QMainWindow::menuBar(). The menu bar it creates will have this QMainWindow as its parent. Instead, create a menu bar without a parent which can be shared among all the windows.

See also: QMenu, QShortcut, QAction

Constructor & Destructor Documentation

QMenuBar::QMenuBar ( QWidget * parent = nullptr )

explicit

Constructs a menu bar with the given parent.

QMenuBar::~QMenuBar ( )

Destroys the menu bar.

Method Documentation

QAction * QMenuBar::actionAt ( const QPoint & point ) const

Returns the QAction at point. Returns nullptr if there is no action at point or if the location has a separator.

See also: addAction(), addSeparator()

void QMenuBar::actionEvent ( QActionEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::actionEvent()

QRect QMenuBar::actionGeometry ( QAction * action ) const

Returns the geometry of action as a QRect.

See also: actionAt()

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(), QWidget::actions()

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

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(), QWidget::actions()

void QWidget::addAction ( QAction * action )

using

Appends action to the list of existing actions available for this widget. A QAction list is typically used to create a context QMenu, however it can be represented in different ways depending on the widget.

A QWidget should only have one of each action. Adding an action which already exists will not cause the same action to be in the widget multiple times. The ownership of action is not transferred to this QWidget.

See also: removeAction(), insertAction(), actions(), QMenu

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

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(), QMenu::menuAction()

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

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(), QMenu::menuAction()

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(), QMenu::menuAction()

QAction * QMenuBar::addSeparator ( )

Appends a separator to the menu.

void QMenuBar::changeEvent ( QEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::changeEvent()

void QMenuBar::clear ( )

Removes all the actions from the menu bar.

Note: On Mac OS X, menu items that have been merged to the system menu bar are not removed by this function. One way to handle this would be to remove the extra actions yourself. You can set the menu role on the different menus, so that you know ahead of time which menu items get merged and which do not. Then decide what to recreate or remove yourself.

See also: removeAction()

QWidget * QMenuBar::cornerWidget ( Qt::Corner corner = Qt::TopRightCorner ) const

Returns the widget on the left of the first or on the right of the last menu item, depending on corner. Using a corner other than Qt::TopRightCorner or Qt::TopLeftCorner will result in a warning.

See also: setCornerWidget()

bool QMenuBar::event ( QEvent * event )

overrideprotected

Reimplemented from QWidget::event()

bool QMenuBar::eventFilter	(	QObject *	object,
		QEvent *	event
	)

overrideprotected

Reimplemented from QWidget::eventFilter()

void QMenuBar::focusInEvent ( QFocusEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::focusInEvent()

void QMenuBar::focusOutEvent ( QFocusEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::focusOutEvent()

int QMenuBar::heightForWidth ( int width ) const

overridevirtual

Reimplemented from QWidget::heightForWidth()

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. This is used to update status information.

See also: triggered(), 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 do not want to fill in all the information themselves.

See also: QStyleOption::initFrom(), QMenu::initStyleOption()

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

Inserts menu before action before and returns the menus menuAction().

See also: QWidget::insertAction(), addMenu()

QAction * QMenuBar::insertSeparator ( QAction * before )

Inserts a newly created action into this menu bar's list of actions before action before and returns a pointer to the QAction. This new action will return true if QAction::isSeparator() is called.

See also: QWidget::insertAction(), addSeparator()

bool QMenuBar::isDefaultUp ( ) const

Returns the value of the property.

bool QMenuBar::isNativeMenuBar ( ) const

Returns the value of the property.

void QMenuBar::keyPressEvent ( QKeyEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::keyPressEvent()

void QMenuBar::leaveEvent ( QEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::leaveEvent()

QSize QMenuBar::minimumSizeHint ( ) const

overridevirtual

Reimplemented from QWidget::minimumSizeHint()

void QMenuBar::mouseMoveEvent ( QMouseEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::mouseMoveEvent()

void QMenuBar::mousePressEvent ( QMouseEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::mousePressEvent()

void QMenuBar::mouseReleaseEvent ( QMouseEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::mouseReleaseEvent()

void QMenuBar::paintEvent ( QPaintEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::paintEvent()

QPlatformMenuBar * QMenuBar::platformMenuBar ( )

Returns a pointer to the internal platform menu bar.

void QMenuBar::resizeEvent ( QResizeEvent * event )

overrideprotectedvirtual

Reimplemented from QWidget::resizeEvent()

void QMenuBar::setActiveAction ( QAction * action )

Sets the currently highlighted action to action.

See also: activeAction()

void QMenuBar::setCornerWidget	(	QWidget *	widget,
		Qt::Corner	corner = `Qt::TopRightCorner`
	)

This sets the given widget to be shown directly on the left of the first menu item, or on the right of the last menu item, depending on corner.

The menu bar takes ownership of widget, reparenting it into the menu bar. However, if the corner already contains a widget, this previous widget will no longer be managed and will still be a visible child of the menu bar.

Using a corner other than Qt::TopRightCorner or Qt::TopLeftCorner will result in a warning.

See also: cornerWidget()

void QMenuBar::setDefaultUp ( bool enabled )

Sets the value of the property to enabled.

void QMenuBar::setNativeMenuBar ( bool nativeMenuBar )

Sets the value of the property to nativeMenuBar.

void QMenuBar::setVisible ( bool visible )

slot

Sets the value of the property to visible.

QSize QMenuBar::sizeHint ( ) const

overridevirtual

Reimplemented from QWidget::sizeHint()

void QMenuBar::timerEvent ( QTimerEvent * event )

overrideprotected

Reimplemented from QObject::timerEvent()

NSMenu * QMenuBar::toNSMenu ( )

Returns this menu bar as an NSMenu object. Only available on Mac OS X.

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(). It is also possible to connect several items to a single slot, most often if the user selects from an array.

Note: QMenuBar has to have ownership of the QMenu in order this signal to work.

See also: hovered(), QAction::triggered()

Property Documentation

QMenuBar::defaultUp

This property holds the popup orientation. By default menus will be bed display flowing down the screen. By setting the property to true the menu will appear to pop up the screen.

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

Properties	Class Methods
read	isDefaultUp
write	setDefaultUp

QMenuBar::nativeMenuBar

This property holds whether or not a menubar will be used as a native menubar on platforms that support it. This is currently supported only on Mac OS X.

If this property is true the menubar is used in the native menubar and is not in the window of its parent, if false the menubar remains in the window. On other platforms setting this attribute has no effect and reading the attribute will return false.

The default for this property is based on the Qt::AA_DontUseNativeMenuBar attribute in QApplication. Explicitly setting this property overrides the presence (or absence) of the attribute.

Properties	Class Methods
read	isNativeMenuBar
write	setNativeMenuBar

Public Signals

Public Slots

Public Methods

Protected Methods

Properties

Friends

Additional Inherited Members

Detailed Description

Example 1

Example 2

Platform Dependent Look and Feel

QMenuBar on Mac OS X

Constructor & Destructor Documentation

Method Documentation

Property Documentation