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Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
|
The QMenu class provides a menu widget for use in menu bars, context menus, and other popup menus. More...
#include <qmenu.h>
Inheritance diagram for QMenu: Collaboration diagram for QMenu:Signals | |
| void | aboutToShow () |
| This signal is emitted just before the menu is shown to the user. | |
| void | aboutToHide () |
| void | triggered (QAction *action) |
| This signal is emitted when an action in this menu is triggered. | |
| void | hovered (QAction *action) |
| This signal is emitted when a menu action is highlighted; action is the action that caused the signal to be emitted. | |
| Signals inherited from QWidget | |
| void | windowTitleChanged (const QString &title) |
| This signal is emitted when the window's title has changed, with the new title as an argument. | |
| void | windowIconChanged (const QIcon &icon) |
| This signal is emitted when the window's icon has changed, with the new icon as an argument. | |
| void | windowIconTextChanged (const QString &iconText) |
| This signal is emitted when the window's icon text has changed, with the new iconText as an argument. | |
| void | customContextMenuRequested (const QPoint &pos) |
| This signal is emitted when the widget's \l contextMenuPolicy is Qt::CustomContextMenu, and the user has requested a context menu on the widget. | |
| Signals inherited from QObject | |
| void | destroyed (QObject *=nullptr) |
| This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked. | |
| void | objectNameChanged (const QString &objectName, QPrivateSignal) |
| This signal is emitted after the object's name has been changed. | |
Public Member Functions | |
| QMenu (QWidget *parent=nullptr) | |
| Constructs a menu with parent parent. | |
| QMenu (const QString &title, QWidget *parent=nullptr) | |
| Constructs a menu with a title and a parent. | |
| ~QMenu () | |
| Destroys the menu. | |
| QAction * | addMenu (QMenu *menu) |
| This convenience function adds menu as a submenu to this menu. | |
| QMenu * | addMenu (const QString &title) |
| Appends a new QMenu with title to the menu. | |
| QMenu * | addMenu (const QIcon &icon, const QString &title) |
| Appends a new QMenu with icon and title to the menu. | |
| QAction * | addSeparator () |
| This convenience function creates a new separator action, i.e. | |
| QAction * | addSection (const QString &text) |
| QAction * | addSection (const QIcon &icon, const QString &text) |
| QAction * | insertMenu (QAction *before, QMenu *menu) |
| This convenience function inserts menu before action before and returns the menus menuAction(). | |
| QAction * | insertSeparator (QAction *before) |
| This convenience function creates a new separator action, i.e. | |
| QAction * | insertSection (QAction *before, const QString &text) |
| QAction * | insertSection (QAction *before, const QIcon &icon, const QString &text) |
| bool | isEmpty () const |
| void | clear () |
| Removes all the menu's actions. | |
| void | setTearOffEnabled (bool) |
| bool | isTearOffEnabled () const |
| bool | isTearOffMenuVisible () const |
| When a menu is torn off a second menu is shown to display the menu contents in a new window. | |
| void | showTearOffMenu () |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| void | showTearOffMenu (const QPoint &pos) |
| void | hideTearOffMenu () |
| This function will forcibly hide the torn off menu making it disappear from the user's desktop. | |
| void | setDefaultAction (QAction *) |
| This sets the default action to act. | |
| QAction * | defaultAction () const |
| Returns the current default action. | |
| void | setActiveAction (QAction *act) |
| Sets the currently highlighted action to act. | |
| QAction * | activeAction () const |
| Returns the currently highlighted action, or \nullptr if no action is currently highlighted. | |
| void | popup (const QPoint &pos, QAction *at=nullptr) |
| Displays the menu so that the action atAction will be at the specified global position p. | |
| QAction * | exec () |
| Executes this menu synchronously. | |
| QAction * | exec (const QPoint &pos, QAction *at=nullptr) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Executes this menu synchronously. | |
| QSize | sizeHint () const override |
| \reimp | |
| QRect | actionGeometry (QAction *) const |
| Returns the geometry of action act. | |
| QAction * | actionAt (const QPoint &) const |
| Returns the item at pt; returns \nullptr if there is no item there. | |
| QAction * | menuAction () const |
| Returns the action associated with this menu. | |
| QString | title () const |
| void | setTitle (const QString &title) |
| QIcon | icon () const |
| void | setIcon (const QIcon &icon) |
| void | setNoReplayFor (QWidget *widget) |
| QPlatformMenu * | platformMenu () |
| void | setPlatformMenu (QPlatformMenu *platformMenu) |
| bool | separatorsCollapsible () const |
| void | setSeparatorsCollapsible (bool collapse) |
| bool | toolTipsVisible () const |
| void | setToolTipsVisible (bool visible) |
| void | addAction (QAction *action) |
| Appends the action action to this widget's list of actions. | |
| QAction * | addAction (const QString &text) |
| QAction * | addAction (const QIcon &icon, const QString &text) |
| QAction * | addAction (const QString &text, const QObject *receiver, const char *member, Qt::ConnectionType type=Qt::AutoConnection) |
| QAction * | addAction (const QIcon &icon, const QString &text, const QObject *receiver, const char *member, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename... Args, typename = compatible_action_slot_args<Args...>> | |
| QAction * | addAction (const QString &text, Args &&...args) |
| template<typename... Args, typename = compatible_action_slot_args<Args...>> | |
| QAction * | addAction (const QIcon &icon, const QString &text, Args &&...args) |
| Public Member Functions inherited from QWidget | |
| QWidget (QWidget *parent=nullptr, Qt::WindowFlags f=Qt::WindowFlags()) | |
| Constructs a widget which is a child of parent, with widget flags set to f. | |
| ~QWidget () | |
| Destroys the widget. | |
| int | devType () const override |
| WId | winId () const |
| Returns the window system identifier of the widget. | |
| void | createWinId () |
| WId | internalWinId () const |
| WId | effectiveWinId () const |
| QStyle * | style () const |
| void | setStyle (QStyle *) |
| Sets the widget's GUI style to style. | |
| bool | isWindow () const |
Returns true if the widget is an independent window, otherwise returns false. | |
| bool | isModal () const |
| Qt::WindowModality | windowModality () const |
| void | setWindowModality (Qt::WindowModality windowModality) |
| bool | isEnabled () const |
| bool | isEnabledTo (const QWidget *) const |
Returns true if this widget would become enabled if ancestor is enabled; otherwise returns false. | |
| QRect | frameGeometry () const |
| const QRect & | geometry () const |
| QRect | normalGeometry () const |
| int | x () const |
| int | y () const |
| QPoint | pos () const |
| QSize | frameSize () const |
| QSize | size () const |
| int | width () const |
| int | height () const |
| QRect | rect () const |
| QRect | childrenRect () const |
| QRegion | childrenRegion () const |
| QSize | minimumSize () const |
| QSize | maximumSize () const |
| int | minimumWidth () const |
| int | minimumHeight () const |
| int | maximumWidth () const |
| int | maximumHeight () const |
| void | setMinimumSize (const QSize &) |
| void | setMinimumSize (int minw, int minh) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This function corresponds to setMinimumSize(QSize(minw, minh)). | |
| void | setMaximumSize (const QSize &) |
| void | setMaximumSize (int maxw, int maxh) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This function corresponds to setMaximumSize(QSize(maxw, maxh)). | |
| void | setMinimumWidth (int minw) |
| void | setMinimumHeight (int minh) |
| void | setMaximumWidth (int maxw) |
| void | setMaximumHeight (int maxh) |
| QSize | sizeIncrement () const |
| void | setSizeIncrement (const QSize &) |
| void | setSizeIncrement (int w, int h) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the x (width) size increment to w and the y (height) size increment to h. | |
| QSize | baseSize () const |
| void | setBaseSize (const QSize &) |
| void | setBaseSize (int basew, int baseh) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This corresponds to setBaseSize(QSize(basew, baseh)). | |
| void | setFixedSize (const QSize &) |
| Sets both the minimum and maximum sizes of the widget to s, thereby preventing it from ever growing or shrinking. | |
| void | setFixedSize (int w, int h) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the width of the widget to w and the height to h. | |
| void | setFixedWidth (int w) |
| Sets both the minimum and maximum width of the widget to w without changing the heights. | |
| void | setFixedHeight (int h) |
| Sets both the minimum and maximum heights of the widget to h without changing the widths. | |
| QPointF | mapToGlobal (const QPointF &) const |
| Translates the widget coordinate pos to global screen coordinates. | |
| QPoint | mapToGlobal (const QPoint &) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QPointF | mapFromGlobal (const QPointF &) const |
| Translates the global screen coordinate pos to widget coordinates. | |
| QPoint | mapFromGlobal (const QPoint &) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QPointF | mapToParent (const QPointF &) const |
| Translates the widget coordinate pos to a coordinate in the parent widget. | |
| QPoint | mapToParent (const QPoint &) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QPointF | mapFromParent (const QPointF &) const |
| Translates the parent widget coordinate pos to widget coordinates. | |
| QPoint | mapFromParent (const QPoint &) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QPointF | mapTo (const QWidget *, const QPointF &) const |
| Translates the widget coordinate pos to the coordinate system of parent. | |
| QPoint | mapTo (const QWidget *, const QPoint &) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QPointF | mapFrom (const QWidget *, const QPointF &) const |
| Translates the widget coordinate pos from the coordinate system of parent to this widget's coordinate system. | |
| QPoint | mapFrom (const QWidget *, const QPoint &) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QWidget * | window () const |
| Returns the window for this widget, i.e. | |
| QWidget * | nativeParentWidget () const |
| QWidget * | topLevelWidget () const |
| const QPalette & | palette () const |
| void | setPalette (const QPalette &) |
| void | setBackgroundRole (QPalette::ColorRole) |
| Sets the background role of the widget to role. | |
| QPalette::ColorRole | backgroundRole () const |
| Returns the background role of the widget. | |
| void | setForegroundRole (QPalette::ColorRole) |
| Sets the foreground role of the widget to role. | |
| QPalette::ColorRole | foregroundRole () const |
| Returns the foreground role. | |
| const QFont & | font () const |
| void | setFont (const QFont &) |
| QFontMetrics | fontMetrics () const |
| Returns the font metrics for the widget's current font. | |
| QFontInfo | fontInfo () const |
| Returns the font info for the widget's current font. | |
| QCursor | cursor () const |
| void | setCursor (const QCursor &) |
| void | unsetCursor () |
| void | setMouseTracking (bool enable) |
| bool | hasMouseTracking () const |
| bool | underMouse () const |
Returns true if the widget is under the mouse cursor; otherwise returns false. | |
| void | setTabletTracking (bool enable) |
| bool | hasTabletTracking () const |
| void | setMask (const QBitmap &) |
| Causes only the pixels of the widget for which bitmap has a corresponding 1 bit to be visible. | |
| void | setMask (const QRegion &) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Causes only the parts of the widget which overlap region to be visible. | |
| QRegion | mask () const |
| Returns the mask currently set on a widget. | |
| void | clearMask () |
| Removes any mask set by setMask(). | |
| 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)) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Renders the widget into the painter's QPainter::device(). | |
| Q_INVOKABLE QPixmap | grab (const QRect &rectangle=QRect(QPoint(0, 0), QSize(-1, -1))) |
| void | grabGesture (Qt::GestureType type, Qt::GestureFlags flags=Qt::GestureFlags()) |
| Subscribes the widget to a given gesture with specific flags. | |
| void | ungrabGesture (Qt::GestureType type) |
| Unsubscribes the widget from a given gesture type. | |
| QString | styleSheet () const |
| QString | windowTitle () const |
| void | setWindowIcon (const QIcon &icon) |
| QIcon | windowIcon () const |
| void | setWindowIconText (const QString &) |
| QString | windowIconText () const |
| void | setWindowRole (const QString &) |
| Sets the window's role to role. | |
| QString | windowRole () const |
| Returns the window's role, or an empty string. | |
| void | setWindowFilePath (const QString &filePath) |
| QString | windowFilePath () const |
| void | setWindowOpacity (qreal level) |
| qreal | windowOpacity () const |
| bool | isWindowModified () const |
| void | setLayoutDirection (Qt::LayoutDirection direction) |
| Qt::LayoutDirection | layoutDirection () const |
| void | unsetLayoutDirection () |
| void | setLocale (const QLocale &locale) |
| QLocale | locale () const |
| void | unsetLocale () |
| bool | isRightToLeft () const |
| bool | isLeftToRight () const |
| bool | isActiveWindow () const |
| void | activateWindow () |
| Sets the top-level widget containing this widget to be the active window. | |
| void | clearFocus () |
| Takes keyboard input focus from the widget. | |
| void | setFocus (Qt::FocusReason reason) |
| Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the \l{isActiveWindow()}{active window}. | |
| Qt::FocusPolicy | focusPolicy () const |
| void | setFocusPolicy (Qt::FocusPolicy policy) |
| bool | hasFocus () const |
| void | setFocusProxy (QWidget *) |
| Sets the widget's focus proxy to widget w. | |
| QWidget * | focusProxy () const |
| Returns the focus proxy, or \nullptr if there is no focus proxy. | |
| Qt::ContextMenuPolicy | contextMenuPolicy () const |
| void | setContextMenuPolicy (Qt::ContextMenuPolicy policy) |
| void | grabMouse () |
| Grabs the mouse input. | |
| void | grabMouse (const QCursor &) |
| void | releaseMouse () |
| Releases the mouse grab. | |
| void | grabKeyboard () |
| Grabs the keyboard input. | |
| void | releaseKeyboard () |
| Releases the keyboard grab. | |
| int | grabShortcut (const QKeySequence &key, Qt::ShortcutContext context=Qt::WindowShortcut) |
| Adds a shortcut to Qt's shortcut system that watches for the given key sequence in the given context. | |
| void | releaseShortcut (int id) |
| Removes the shortcut with the given id from Qt's shortcut system. | |
| void | setShortcutEnabled (int id, bool enable=true) |
| If enable is true, the shortcut with the given id is enabled; otherwise the shortcut is disabled. | |
| void | setShortcutAutoRepeat (int id, bool enable=true) |
| bool | updatesEnabled () const |
| void | setUpdatesEnabled (bool enable) |
| void | update (int x, int y, int w, int h) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This version updates a rectangle (x, y, w, h) inside the widget. | |
| void | update (const QRect &) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This version updates a rectangle rect inside the widget. | |
| void | update (const QRegion &) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This version repaints a region rgn inside the widget. | |
| void | repaint (int x, int y, int w, int h) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This version repaints a rectangle (x, y, w, h) inside the widget. | |
| void | repaint (const QRect &) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This version repaints a rectangle rect inside the widget. | |
| void | repaint (const QRegion &) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This version repaints a region rgn inside the widget. | |
| void | stackUnder (QWidget *) |
| Places the widget under w in the parent widget's stack. | |
| void | move (int x, int y) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This corresponds to move(QPoint(x, y)). | |
| void | move (const QPoint &) |
| void | resize (int w, int h) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This corresponds to resize(QSize(w, h)). | |
| void | resize (const QSize &) |
| void | setGeometry (int x, int y, int w, int h) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This corresponds to setGeometry(QRect(x, y, w, h)). | |
| void | setGeometry (const QRect &) |
| QByteArray | saveGeometry () const |
| bool | restoreGeometry (const QByteArray &geometry) |
| void | adjustSize () |
| Adjusts the size of the widget to fit its contents. | |
| bool | isVisible () const |
| bool | isVisibleTo (const QWidget *) const |
Returns true if this widget would become visible if ancestor is shown; otherwise returns false. | |
| bool | isHidden () const |
Returns true if the widget is hidden, otherwise returns false. | |
| bool | isMinimized () const |
| bool | isMaximized () const |
| bool | isFullScreen () const |
| Qt::WindowStates | windowState () const |
| Returns the current window state. | |
| void | setWindowState (Qt::WindowStates state) |
| Sets the window state to windowState. | |
| void | overrideWindowState (Qt::WindowStates state) |
| virtual QSize | minimumSizeHint () const |
| QSizePolicy | sizePolicy () const |
| void | setSizePolicy (QSizePolicy) |
| void | setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the size policy of the widget to horizontal and vertical, with standard stretch and no height-for-width. | |
| virtual int | heightForWidth (int) const |
| Returns the preferred height for this widget, given the width w. | |
| virtual bool | hasHeightForWidth () const |
| QRegion | visibleRegion () const |
| Returns the unobscured region where paint events can occur. | |
| void | setContentsMargins (int left, int top, int right, int bottom) |
| Sets the margins around the contents of the widget to have the sizes left, top, right, and bottom. | |
| void | setContentsMargins (const QMargins &margins) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QMargins | contentsMargins () const |
| The contentsMargins function returns the widget's contents margins. | |
| QRect | contentsRect () const |
| Returns the area inside the widget's margins. | |
| QLayout * | layout () const |
| Returns the layout manager that is installed on this widget, or \nullptr if no layout manager is installed. | |
| void | setLayout (QLayout *) |
| Sets the layout manager for this widget to layout. | |
| void | updateGeometry () |
| Notifies the layout system that this widget has changed and may need to change geometry. | |
| void | setParent (QWidget *parent) |
| Sets the parent of the widget to parent, and resets the window flags. | |
| void | setParent (QWidget *parent, Qt::WindowFlags f) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This function also takes widget flags, f as an argument. | |
| void | scroll (int dx, int dy) |
| Scrolls the widget including its children dx pixels to the right and dy downward. | |
| void | scroll (int dx, int dy, const QRect &) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This version only scrolls r and does not move the children of the widget. | |
| QWidget * | focusWidget () const |
| Returns the last child of this widget that setFocus had been called on. | |
| QWidget * | nextInFocusChain () const |
| Returns the next widget in this widget's focus chain. | |
| QWidget * | previousInFocusChain () const |
| The previousInFocusChain function returns the previous widget in this widget's focus chain. | |
| bool | acceptDrops () const |
| void | setAcceptDrops (bool on) |
| void | addAction (QAction *action) |
| Appends the action action to this widget's list of actions. | |
| void | addActions (const QList< QAction * > &actions) |
| Appends the actions actions to this widget's list of actions. | |
| void | insertActions (QAction *before, const QList< QAction * > &actions) |
| Inserts the actions actions to this widget's list of actions, before the action before. | |
| void | insertAction (QAction *before, QAction *action) |
| Inserts the action action to this widget's list of actions, before the action before. | |
| void | removeAction (QAction *action) |
| Removes the action action from this widget's list of actions. | |
| QList< QAction * > | actions () const |
| Returns the (possibly empty) list of this widget's actions. | |
| QAction * | addAction (const QString &text) |
| QAction * | addAction (const QIcon &icon, const QString &text) |
| QAction * | addAction (const QString &text, const QObject *receiver, const char *member, Qt::ConnectionType type=Qt::AutoConnection) |
| QAction * | addAction (const QIcon &icon, const QString &text, const QObject *receiver, const char *member, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename... Args, typename = compatible_action_slot_args<Args...>> | |
| QAction * | addAction (const QString &text, Args &&...args) |
| template<typename... Args, typename = compatible_action_slot_args<Args...>> | |
| QAction * | addAction (const QIcon &icon, const QString &text, Args &&...args) |
| QWidget * | parentWidget () const |
| Returns the parent of this widget, or \nullptr if it does not have any parent widget. | |
| void | setWindowFlags (Qt::WindowFlags type) |
| Qt::WindowFlags | windowFlags () const |
| Window flags are a combination of a type (e.g. | |
| void | setWindowFlag (Qt::WindowType, bool on=true) |
| void | overrideWindowFlags (Qt::WindowFlags type) |
| Sets the window flags for the widget to flags, without telling the window system. | |
| Qt::WindowType | windowType () const |
| Returns the window type of this widget. | |
| QWidget * | childAt (int x, int y) const |
| Returns the visible child widget at the position ({x}, {y}) in the widget's coordinate system. | |
| QWidget * | childAt (const QPoint &p) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Returns the visible child widget at point p in the widget's own coordinate system. | |
| void | setAttribute (Qt::WidgetAttribute, bool on=true) |
| Sets the attribute attribute on this widget if on is true; otherwise clears the attribute. | |
| bool | testAttribute (Qt::WidgetAttribute) const |
Returns true if attribute attribute is set on this widget; otherwise returns false. | |
| QPaintEngine * | paintEngine () const override |
| Returns the widget's paint engine. | |
| void | ensurePolished () const |
| Ensures that the widget and its children have been polished by QStyle (i.e., have a proper font and palette). | |
| bool | isAncestorOf (const QWidget *child) const |
Returns true if this widget is a parent, (or grandparent and so on to any level), of the given child, and both widgets are within the same window; otherwise returns false. | |
| bool | autoFillBackground () const |
| void | setAutoFillBackground (bool enabled) |
| QBackingStore * | backingStore () const |
| QWindow * | windowHandle () const |
| If this is a native widget, return the associated QWindow. | |
| QScreen * | screen () const |
| Returns the screen the widget is on. | |
| void | setScreen (QScreen *) |
| Sets the screen on which the widget should be shown to screen. | |
| virtual QVariant | inputMethodQuery (Qt::InputMethodQuery) const |
| This method is only relevant for input widgets. | |
| Qt::InputMethodHints | inputMethodHints () const |
| void | setInputMethodHints (Qt::InputMethodHints hints) |
| Public Member Functions inherited from QObject | |
| Q_INVOKABLE | QObject (QObject *parent=nullptr) |
| Constructs an object with parent object parent. | |
| virtual | ~QObject () |
| Destroys the object, deleting all its child objects. | |
| virtual bool | eventFilter (QObject *watched, QEvent *event) |
| Filters events if this object has been installed as an event filter for the watched object. | |
| QString | objectName () const |
| Q_WEAK_OVERLOAD void | setObjectName (const QString &name) |
| Sets the object's name to name. | |
| void | setObjectName (QAnyStringView name) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| QBindable< QString > | bindableObjectName () |
| bool | isWidgetType () const |
Returns true if the object is a widget; otherwise returns false. | |
| bool | isWindowType () const |
Returns true if the object is a window; otherwise returns false. | |
| bool | isQuickItemType () const |
Returns true if the object is a QQuickItem; otherwise returns false. | |
| bool | signalsBlocked () const noexcept |
Returns true if signals are blocked; otherwise returns false. | |
| bool | blockSignals (bool b) noexcept |
| If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). | |
| QThread * | thread () const |
| Returns the thread in which the object lives. | |
| bool | moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL) |
Changes the thread affinity for this object and its children and returns true on success. | |
| int | startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer) |
| This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds. | |
| int | startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer) |
| void | killTimer (int id) |
| Kills the timer with timer identifier, id. | |
| void | killTimer (Qt::TimerId id) |
| template<typename T > | |
| T | findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object. | |
| template<typename T > | |
| QList< T > | findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. | |
| template<typename T > | |
| T | findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| template<typename T > | |
| QList< T > | findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| const QObjectList & | children () const |
| Returns a list of child objects. | |
| void | setParent (QObject *parent) |
| Makes the object a child of parent. | |
| void | installEventFilter (QObject *filterObj) |
| Installs an event filter filterObj on this object. | |
| void | removeEventFilter (QObject *obj) |
| Removes an event filter object obj from this object. | |
| QMetaObject::Connection | connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const |
| bool | disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const |
| bool | disconnect (const QObject *receiver, const char *member=nullptr) const |
| void | dumpObjectTree () const |
| Dumps a tree of children to the debug output. | |
| void | dumpObjectInfo () const |
| Dumps information about signal connections, etc. | |
| bool | setProperty (const char *name, const QVariant &value) |
| Sets the value of the object's name property to value. | |
| bool | setProperty (const char *name, QVariant &&value) |
| QVariant | property (const char *name) const |
| Returns the value of the object's name property. | |
| QList< QByteArray > | dynamicPropertyNames () const |
| QBindingStorage * | bindingStorage () |
| const QBindingStorage * | bindingStorage () const |
| QObject * | parent () const |
| Returns a pointer to the parent object. | |
| bool | inherits (const char *classname) const |
Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. | |
| Public Member Functions inherited from QPaintDevice | |
| virtual | ~QPaintDevice () |
| bool | paintingActive () const |
| int | width () const |
| int | height () const |
| int | widthMM () const |
| int | heightMM () const |
| int | logicalDpiX () const |
| int | logicalDpiY () const |
| int | physicalDpiX () const |
| int | physicalDpiY () const |
| qreal | devicePixelRatio () const |
| qreal | devicePixelRatioF () const |
| int | colorCount () const |
| int | depth () const |
Static Public Member Functions | |
| static QAction * | exec (const QList< QAction * > &actions, const QPoint &pos, QAction *at=nullptr, QWidget *parent=nullptr) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Executes a menu synchronously. | |
| static QMenu * | menuInAction (const QAction *action) |
| Returns the menu contained by action, or \nullptr if action does not contain a menu. | |
| Static Public Member Functions inherited from QWidget | |
| static void | setTabOrder (QWidget *, QWidget *) |
| Puts the second widget after the first widget in the focus order. | |
| static void | setTabOrder (std::initializer_list< QWidget * > widgets) |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. | |
| static QWidget * | mouseGrabber () |
| Returns the widget that is currently grabbing the mouse input. | |
| static QWidget * | keyboardGrabber () |
| Returns the widget that is currently grabbing the keyboard input. | |
| static QWidget * | find (WId) |
| Returns a pointer to the widget with window identifier/handle id. | |
| static QWidget * | createWindowContainer (QWindow *window, QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::WindowFlags()) |
| Creates a QWidget that makes it possible to embed window into a QWidget-based application. | |
| Static Public Member Functions inherited from QObject | |
| static QMetaObject::Connection | connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection) |
| \threadsafe | |
| static QMetaObject::Connection | connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename Func1 , typename Func2 > | |
| static QMetaObject::Connection | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType *context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection) |
| template<typename Func1 , typename Func2 > | |
| static QMetaObject::Connection | connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot) |
| static bool | disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member) |
| \threadsafe | |
| static bool | disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member) |
| static bool | disconnect (const QMetaObject::Connection &) |
| Disconnect a connection. | |
| template<typename Func1 , typename Func2 > | |
| static bool | disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot) |
| template<typename Func1 > | |
| static bool | disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero) |
| Static Public Member Functions inherited from QPaintDevice | |
| static qreal | devicePixelRatioFScale () |
Protected Member Functions | |
| int | columnCount () const |
| If a menu does not fit on the screen it lays itself out so that it does fit. | |
| void | changeEvent (QEvent *) override |
| \reimp | |
| void | keyPressEvent (QKeyEvent *) override |
| \reimp | |
| void | mouseReleaseEvent (QMouseEvent *) override |
| \reimp | |
| void | mousePressEvent (QMouseEvent *) override |
| \reimp | |
| void | mouseMoveEvent (QMouseEvent *) override |
| \reimp | |
| void | enterEvent (QEnterEvent *) override |
| \reimp | |
| void | leaveEvent (QEvent *) override |
| \reimp | |
| void | hideEvent (QHideEvent *) override |
| \reimp | |
| void | paintEvent (QPaintEvent *) override |
| \reimp | |
| void | actionEvent (QActionEvent *) override |
| \reimp | |
| void | timerEvent (QTimerEvent *) override |
| \reimp | |
| bool | event (QEvent *) override |
| \reimp | |
| bool | focusNextPrevChild (bool next) override |
| \reimp | |
| virtual void | initStyleOption (QStyleOptionMenuItem *option, const QAction *action) const |
| Initialize option with the values from this menu and information from action. | |
| Protected Member Functions inherited from QWidget | |
| bool | event (QEvent *event) override |
| This is the main event handler; it handles event event. | |
| virtual void | mouseDoubleClickEvent (QMouseEvent *event) |
| This event handler, for event event, can be reimplemented in a subclass to receive mouse double click events for the widget. | |
| virtual void | keyReleaseEvent (QKeyEvent *event) |
| This event handler, for event event, can be reimplemented in a subclass to receive key release events for the widget. | |
| virtual void | focusInEvent (QFocusEvent *event) |
| This event handler can be reimplemented in a subclass to receive keyboard focus events (focus received) for the widget. | |
| virtual void | focusOutEvent (QFocusEvent *event) |
| This event handler can be reimplemented in a subclass to receive keyboard focus events (focus lost) for the widget. | |
| virtual void | moveEvent (QMoveEvent *event) |
| This event handler can be reimplemented in a subclass to receive widget move events which are passed in the event parameter. | |
| virtual void | resizeEvent (QResizeEvent *event) |
| This event handler can be reimplemented in a subclass to receive widget resize events which are passed in the event parameter. | |
| virtual void | closeEvent (QCloseEvent *event) |
| This event handler is called with the given event when Qt receives a window close request for a top-level widget from the window system. | |
| virtual void | contextMenuEvent (QContextMenuEvent *event) |
| This event handler, for event event, can be reimplemented in a subclass to receive widget context menu events. | |
| virtual void | showEvent (QShowEvent *event) |
| This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter. | |
| virtual bool | nativeEvent (const QByteArray &eventType, void *message, qintptr *result) |
| This special event handler can be reimplemented in a subclass to receive native platform events identified by eventType which are passed in the message parameter. | |
| int | metric (PaintDeviceMetric) const override |
| Internal implementation of the virtual QPaintDevice::metric() function. | |
| void | initPainter (QPainter *painter) const override |
| Initializes the painter pen, background and font to the same as the given widget's. | |
| QPaintDevice * | redirected (QPoint *offset) const override |
| QPainter * | sharedPainter () const override |
| virtual void | inputMethodEvent (QInputMethodEvent *) |
| This event handler, for event event, can be reimplemented in a subclass to receive Input Method composition events. | |
| void | create (WId=0, bool initializeWindow=true, bool destroyOldWindow=true) |
| Creates a new widget window. | |
| void | destroy (bool destroyWindow=true, bool destroySubWindows=true) |
| Frees up window system resources. | |
| bool | focusNextChild () |
Finds a new widget to give the keyboard focus to, as appropriate for \uicontrol Tab, and returns true if it can find a new widget, or false if it can't. | |
| bool | focusPreviousChild () |
Finds a new widget to give the keyboard focus to, as appropriate for \uicontrol Shift+Tab, and returns true if it can find a new widget, or false if it can't. | |
| QWidget (QWidgetPrivate &d, QWidget *parent, Qt::WindowFlags f) | |
| Protected Member Functions inherited from QObject | |
| QObject * | sender () const |
| Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr. | |
| int | senderSignalIndex () const |
| int | receivers (const char *signal) const |
| Returns the number of receivers connected to the signal. | |
| bool | isSignalConnected (const QMetaMethod &signal) const |
| virtual void | childEvent (QChildEvent *event) |
| This event handler can be reimplemented in a subclass to receive child events. | |
| virtual void | customEvent (QEvent *event) |
| This event handler can be reimplemented in a subclass to receive custom events. | |
| virtual void | connectNotify (const QMetaMethod &signal) |
| virtual void | disconnectNotify (const QMetaMethod &signal) |
| QObject (QObjectPrivate &dd, QObject *parent=nullptr) | |
| Protected Member Functions inherited from QPaintDevice | |
| QPaintDevice () noexcept | |
Properties | |
| bool | tearOffEnabled |
| whether the menu supports being torn off | |
| QString | title |
| The title of the menu. | |
| QIcon | icon |
| The icon of the menu. | |
| bool | separatorsCollapsible |
| whether consecutive separators should be collapsed | |
| bool | toolTipsVisible |
| whether tooltips of menu actions should be visible | |
| Properties inherited from QWidget | |
| bool | modal |
| whether the widget is a modal widget | |
| Qt::WindowModality | windowModality |
| which windows are blocked by the modal widget | |
| bool | enabled |
| whether the widget is enabled | |
| QRect | geometry |
| the geometry of the widget relative to its parent and excluding the window frame | |
| QRect | frameGeometry |
| geometry of the widget relative to its parent including any window frame | |
| QRect | normalGeometry |
| the geometry of the widget as it will appear when shown as a normal (not maximized or full screen) top-level widget | |
| int | x |
| the x coordinate of the widget relative to its parent including any window frame | |
| int | y |
| the y coordinate of the widget relative to its parent and including any window frame | |
| QPoint | pos |
| the position of the widget within its parent widget | |
| QSize | frameSize |
| the size of the widget including any window frame | |
| QSize | size |
| the size of the widget excluding any window frame | |
| int | width |
| the width of the widget excluding any window frame | |
| int | height |
| the height of the widget excluding any window frame | |
| QRect | rect |
| the internal geometry of the widget excluding any window frame | |
| QRect | childrenRect |
| the bounding rectangle of the widget's children | |
| QRegion | childrenRegion |
| the combined region occupied by the widget's children | |
| QSizePolicy | sizePolicy |
| the default layout behavior of the widget | |
| QSize | minimumSize |
| the widget's minimum size | |
| QSize | maximumSize |
| the widget's maximum size in pixels | |
| int | minimumWidth |
| the widget's minimum width in pixels | |
| int | minimumHeight |
| the widget's minimum height in pixels | |
| int | maximumWidth |
| the widget's maximum width in pixels | |
| int | maximumHeight |
| the widget's maximum height in pixels | |
| QSize | sizeIncrement |
| the size increment of the widget | |
| QSize | baseSize |
| the base size of the widget | |
| QPalette | palette |
| the widget's palette | |
| QFont | font |
| the font currently set for the widget | |
| QCursor | cursor |
| the cursor shape for this widget | |
| bool | mouseTracking |
| whether mouse tracking is enabled for the widget | |
| bool | tabletTracking |
| whether tablet tracking is enabled for the widget | |
| bool | isActiveWindow |
| whether this widget's window is the active window | |
| Qt::FocusPolicy | focusPolicy |
| the way the widget accepts keyboard focus | |
| bool | focus |
| whether this widget (or its focus proxy) has the keyboard input focus | |
| Qt::ContextMenuPolicy | contextMenuPolicy |
| how the widget shows a context menu | |
| bool | updatesEnabled |
| whether updates are enabled | |
| bool | visible |
| whether the widget is visible | |
| bool | minimized |
| whether this widget is minimized (iconified) | |
| bool | maximized |
| whether this widget is maximized | |
| bool | fullScreen |
| whether the widget is shown in full screen mode | |
| QSize | sizeHint |
| the recommended size for the widget | |
| QSize | minimumSizeHint |
| the recommended minimum size for the widget | |
| bool | acceptDrops |
| whether drop events are enabled for this widget | |
| QString | windowTitle |
| the window title (caption) | |
| QIcon | windowIcon |
| the widget's icon | |
| QString | windowIconText |
| the text to be displayed on the icon of a minimized window | |
| double | windowOpacity |
| The level of opacity for the window. | |
| bool | windowModified |
| whether the document shown in the window has unsaved changes | |
| Qt::LayoutDirection | layoutDirection |
| the layout direction for this widget. | |
| bool | autoFillBackground |
| whether the widget background is filled automatically | |
| QString | styleSheet |
| the widget's style sheet | |
| QLocale | locale |
| the widget's locale | |
| QString | windowFilePath |
| the file path associated with a widget | |
| Qt::InputMethodHints | inputMethodHints |
| What input method specific hints the widget has. | |
| Properties inherited from QObject | |
| QString | objectName |
| the name of this object | |
Friends | |
| class | QMenuBar |
| class | QMenuBarPrivate |
| class | QTornOffMenu |
| class | QComboBox |
| class | QtWidgetsActionPrivate |
| class | QToolButtonPrivate |
| void | qt_mac_emit_menuSignals (QMenu *menu, bool show) |
| void | qt_mac_menu_emit_hovered (QMenu *menu, QAction *action) |
Additional Inherited Members | |
| Public Types inherited from QWidget | |
| enum | RenderFlag { DrawWindowBackground = 0x1 , DrawChildren = 0x2 , IgnoreMask = 0x4 } |
| This enum describes how to render the widget when calling QWidget::render(). More... | |
| Public Types inherited from QPaintDevice | |
| enum | PaintDeviceMetric { PdmWidth = 1 , PdmHeight , PdmWidthMM , PdmHeightMM , PdmNumColors , PdmDepth , PdmDpiX , PdmDpiY , PdmPhysicalDpiX , PdmPhysicalDpiY , PdmDevicePixelRatio , PdmDevicePixelRatioScaled } |
| Public Slots inherited from QWidget | |
| void | setEnabled (bool) |
| void | setDisabled (bool) |
| Disables widget input events if disable is true; otherwise enables input events. | |
| void | setWindowModified (bool) |
| void | setWindowTitle (const QString &) |
| void | setStyleSheet (const QString &styleSheet) |
| void | setFocus () |
| This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the \l{isActiveWindow()}{active window}. | |
| void | update () |
| Updates the widget unless updates are disabled or the widget is hidden. | |
| void | repaint () |
| Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the widget is hidden. | |
| virtual void | setVisible (bool visible) |
| void | setHidden (bool hidden) |
| Convenience function, equivalent to setVisible(!hidden). | |
| void | show () |
| Shows the widget and its child widgets. | |
| void | hide () |
| Hides the widget. | |
| void | showMinimized () |
| Shows the widget minimized, as an icon. | |
| void | showMaximized () |
| Shows the widget maximized. | |
| void | showFullScreen () |
| Shows the widget in full-screen mode. | |
| void | showNormal () |
| Restores the widget after it has been maximized or minimized. | |
| bool | close () |
| Closes this widget. | |
| void | raise () |
| Raises this widget to the top of the parent widget's stack. | |
| void | lower () |
| Lowers the widget to the bottom of the parent widget's stack. | |
| Public Slots inherited from QObject | |
| void | deleteLater () |
| \threadsafe | |
| Protected Slots inherited from QWidget | |
| void | updateMicroFocus (Qt::InputMethodQuery query=Qt::ImQueryAll) |
| Updates the widget's micro focus and informs input methods that the state specified by query has changed. | |
| Protected Attributes inherited from QObject | |
| QScopedPointer< QObjectData > | d_ptr |
| Protected Attributes inherited from QPaintDevice | |
| ushort | painters |
| Related Symbols inherited from QWidget | |
| setupUi (QWidget *widget) | |
| \macro QWIDGETSIZE_MAX | |
| Related Symbols inherited from QObject | |
| template< class T > T | qobject_cast (const QObject *object) |
| Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr. | |
| template< typename T > T | qFindChildqFindChildren (const QObject *obj, const QString &name)() |
| template< typename T > QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QString &name)() |
| QObjectList | |
| \macro Q_CLASSINFO(Name, Value) | |
The QMenu class provides a menu widget for use in menu bars, context menus, and other popup menus.
\inmodule QtWidgets
A menu widget is a selection menu. It can be either a pull-down menu in a menu bar or a standalone context menu. Pull-down menus are shown by the menu bar when the user clicks on the respective item or presses the specified shortcut key. 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(). Menus can also be invoked in response to button presses; these are just like context menus except for how they are invoked.
Constructs a menu with parent parent.
Although a popup menu is always a top-level widget, if a parent is passed the popup menu will be deleted when that parent is destroyed (as with any other QObject).
Definition at line 1746 of file qmenu.cpp.
References d.
Referenced by addMenu(), and addMenu().
Here is the caller graph for this function:| QMenu::~QMenu | ( | ) |
Destroys the menu.
Definition at line 1781 of file qmenu.cpp.
References QSet< T >::begin(), d, QSet< T >::end(), hideTearOffMenu(), it, QWidgetAction::releaseWidget(), and widget.
Here is the call graph for this function:
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signal |
This signal is emitted just before the menu is hidden from the user.
Referenced by QWidgetPlatformMenu::QWidgetPlatformMenu(), hideEvent(), QMenuPrivate::hideMenu(), QtAndroidMenu::onContextItemSelected(), QGtk3Menu::onHide(), and QMenuPrivate::setPlatformMenu().
Here is the caller graph for this function:
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signal |
This signal is emitted just before the menu is shown to the user.
Referenced by QWidgetPlatformMenu::QWidgetPlatformMenu(), QWindowsPopupMenu::notifyAboutToShow(), QWindowsMenuBar::notifyAboutToShow(), QGtk3Menu::onShow(), QMenuPrivate::setPlatformMenu(), and QtAndroidMenu::showContextMenu().
Here is the caller graph for this function:Returns the item at pt; returns \nullptr if there is no item there.
Definition at line 2251 of file qmenu.cpp.
References actionAt(), and ret.
Referenced by actionAt(), and event().
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overrideprotectedvirtual |
\reimp
Reimplemented from QWidget.
Reimplemented in QTornOffMenu.
Definition at line 3524 of file qmenu.cpp.
References QEvent::ActionAdded, QEvent::ActionChanged, QEvent::ActionRemoved, QObject::connect(), d, hovered(), QWidget::isVisible(), QT_CONFIG, QWidget::resize(), QMenuPrivate::ScrollerTearOffItem::ScrollDown, QMenuPrivate::ScrollerTearOffItem::ScrollUp, QWidget::setAttribute(), SIGNAL, sizeHint(), SLOT, triggered(), Qt::UniqueConnection, QWidget::update(), Qt::WA_Resized, and widget.
Referenced by QTornOffMenu::actionEvent().
Here is the call graph for this function: Here is the caller graph for this function:| QAction * QMenu::activeAction | ( | ) | const |
Returns the currently highlighted action, or \nullptr if no action is currently highlighted.
Definition at line 2193 of file qmenu.cpp.
Referenced by QMenuPrivate::hideMenu().
Here is the caller graph for this function:Definition at line 568 of file qwidget.cpp.
| QAction * QWidget::addAction | ( | const QIcon & | icon, |
| const QString & | text, | ||
| const QObject * | receiver, | ||
| const char * | member, | ||
| Qt::ConnectionType | type = Qt::AutoConnection ) |
Definition at line 571 of file qwidget.cpp.
Definition at line 567 of file qwidget.cpp.
| QAction * QWidget::addAction | ( | const QString & | text, |
| const QObject * | receiver, | ||
| const char * | member, | ||
| Qt::ConnectionType | type = Qt::AutoConnection ) |
Definition at line 569 of file qwidget.cpp.
Appends the action action to this widget's list of actions.
All QWidgets have a list of \l{QAction}s. However, they can be represented graphically in many different ways. The default use of the QAction list (as returned by actions()) is to create a context QMenu.
A QWidget should only have one of each action and adding an action it already has will not cause the same action to be in the widget twice.
The ownership of action is not transferred to this QWidget.
Definition at line 559 of file qwidget.cpp.
Referenced by QTornOffMenu::QTornOffMenu(), QUnicodeControlCharacterMenu::QUnicodeControlCharacterMenu(), Window::Window(), addMenu(), addMenu(), addMenu(), addSection(), addSection(), addSeparator(), QScrollBar::contextMenuEvent(), QCalendarWidgetPrivate::createNavigationBar(), QLineEdit::createStandardContextMenu(), QWidgetTextControl::createStandardContextMenu(), installSceneEventFilter(), QToolBarLayout::layoutActions(), and QFileDialogPrivate::showContextMenu().
Here is the caller graph for this function:Appends a new QMenu with icon and title to the menu.
The menu takes ownership of the menu. Returns the new menu.
Definition at line 1903 of file qmenu.cpp.
References QMenu(), addAction(), icon, menu, menuAction(), setIcon(), and title.
Here is the call graph for this function:Appends a new QMenu with title to the menu.
The menu takes ownership of the menu. Returns the new menu.
Definition at line 1890 of file qmenu.cpp.
References QMenu(), addAction(), menu, menuAction(), and title.
Here is the call graph for this function:This convenience function adds menu as a submenu to this menu.
It returns menu's menuAction(). This menu does not take ownership of menu.
Definition at line 1877 of file qmenu.cpp.
References addAction(), menu, and menuAction().
Referenced by QLineEdit::createStandardContextMenu(), QWidgetTextControl::createStandardContextMenu(), and QQuickLabsPlatformMenu::data_append().
Here is the call graph for this function: Here is the caller graph for this function:This convenience function creates a new section action, i.e. an action with QAction::isSeparator() returning true but also having text and icon hints, and adds the new action to this menu's list of actions. It returns the newly created action.
The rendering of the hints is style and platform dependent. Widget styles can use the text and icon information in the rendering for sections, or can choose to ignore them and render sections like simple separators.
QMenu takes ownership of the returned QAction.
Definition at line 1969 of file qmenu.cpp.
References addAction(), icon, QAction::setSeparator(), and text.
Here is the call graph for this function:This convenience function creates a new section action, i.e. an action with QAction::isSeparator() returning true but also having text hint, and adds the new action to this menu's list of actions. It returns the newly created action.
The rendering of the hint is style and platform dependent. Widget styles can use the text information in the rendering for sections, or can choose to ignore it and render sections like simple separators.
QMenu takes ownership of the returned QAction.
Definition at line 1945 of file qmenu.cpp.
References addAction(), QAction::setSeparator(), and text.
Here is the call graph for this function:| QAction * QMenu::addSeparator | ( | ) |
This convenience function creates a new separator action, i.e.
an action with QAction::isSeparator() returning true, and adds the new action to this menu's list of actions. It returns the newly created action.
QMenu takes ownership of the returned QAction.
Definition at line 1921 of file qmenu.cpp.
References addAction(), and QAction::setSeparator().
Referenced by QScrollBar::contextMenuEvent(), QLineEdit::createStandardContextMenu(), QWidgetTextControl::createStandardContextMenu(), and QFileDialogPrivate::showContextMenu().
Here is the call graph for this function: Here is the caller graph for this function:\reimp
Reimplemented from QWidget.
Definition at line 2944 of file qmenu.cpp.
References QWidget::changeEvent(), d, QEvent::EnabledChange, QEvent::FontChange, QWidget::isEnabled(), QWidget::isVisible(), QEvent::LayoutDirectionChange, QWidget::resize(), QMenuPrivate::QMenuScroller::scrollFlags, QMenuPrivate::QMenuScroller::ScrollNone, QWidget::setMouseTracking(), QStyle::SH_Menu_MouseTracking, QStyle::SH_Menu_Scrollable, sizeHint(), QWidget::style(), QEvent::StyleChange, and QEvent::type().
Here is the call graph for this function:| void QMenu::clear | ( | ) |
Removes all the menu's actions.
Actions owned by the menu and not shown in any other widget are deleted.
Definition at line 2225 of file qmenu.cpp.
References QWidget::actions(), i, QObject::parent(), and QWidget::removeAction().
Referenced by QQuickLabsPlatformMenu::data_clear(), QQuickLabsPlatformMenu::items_clear(), QToolBarLayout::layoutActions(), org.qtproject.qt.android.QtActivityBase::onCreateOptionsMenu(), and QMenuBarPrivate::updateGeometries().
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| QAction * QMenu::defaultAction | ( | ) | const |
Returns the current default action.
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\reimp
Reimplemented from QObject.
Definition at line 2974 of file qmenu.cpp.
References QEvent::accept(), actionAt(), button, QKeySequence::Cancel, QEvent::ContextMenu, d, QWidget::event(), QToolTip::hideText(), QStyleOption::initFrom(), QString::isEmpty(), QWidget::isWindow(), Qt::Key_Backtab, Qt::Key_Down, Qt::Key_Enter, Qt::Key_Left, Qt::Key_Return, Qt::Key_Right, Qt::Key_Tab, Qt::Key_Up, QEvent::KeyPress, keyPressEvent(), Qt::LeftButton, QAction::menu(), QEvent::MouseButtonPress, QMenuPrivate::mouseDown, QEvent::Polish, QHelpEvent::pos(), QEvent::QueryWhatsThis, QEvent::Resize, QEvent::setAccepted(), QWidget::setMask(), QStyle::SH_Menu_Mask, QEvent::ShortcutOverride, QEvent::Show, QToolTip::showText(), QString::size(), QWidget::style(), QEvent::ToolTip, QEvent::type(), QAction::whatsThis, QWidget::window(), and QWidget::windowHandle().
Here is the call graph for this function:| QAction * QMenu::exec | ( | ) |
Executes this menu synchronously.
This is equivalent to {exec(pos())}.
This returns the triggered QAction in either the popup menu or one of its submenus, or \nullptr if no item was triggered (normally because the user pressed Esc).
In most situations you'll want to specify the position yourself, for example, the current mouse position:
or aligned to a widget:
or in reaction to a QMouseEvent *e:
Definition at line 2613 of file qmenu.cpp.
References exec(), and QWidget::pos.
Referenced by QScrollBar::contextMenuEvent(), QWidget::event(), exec(), exec(), and installSceneEventFilter().
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This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Executes a menu synchronously.
The menu's actions are specified by the list of actions. The menu will pop up so that the specified action, at, appears at global position pos. If at is not specified then the menu appears at position pos. parent is the menu's parent widget; specifying the parent will provide context when pos alone is not enough to decide where the menu should go (e.g., with multiple desktops or when the parent is embedded in QGraphicsView).
The function returns the triggered QAction in either the popup menu or one of its submenus, or \nullptr if no item was triggered (normally because the user pressed Esc).
This is equivalent to:
Definition at line 2703 of file qmenu.cpp.
References QWidget::actions(), QWidget::addActions(), at, exec(), menu, QObject::parent(), and QWidget::pos.
Here is the call graph for this function:This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Executes this menu synchronously.
Pops up the menu so that the action action will be at the specified global position p. To translate a widget's local coordinates into global coordinates, use QWidget::mapToGlobal().
This returns the triggered QAction in either the popup menu or one of its submenus, or \nullptr if no item was triggered (normally because the user pressed Esc).
Note that all signals are emitted as usual. If you connect a QAction to a slot and call the menu's exec(), you get the result both via the signal-slot connection and in the return value of exec().
Common usage is to position the menu at the current mouse position:
or aligned to a widget:
or in reaction to a QMouseEvent *e:
When positioning a menu with exec() or popup(), bear in mind that you cannot rely on the menu's current size(). For performance reasons, the menu adapts its size only when necessary. So in many cases, the size before and after the show is different. Instead, use sizeHint() which calculates the proper size depending on the menu's current contents.
Definition at line 2654 of file qmenu.cpp.
References d.
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Reimplemented from QWidget.
Definition at line 3065 of file qmenu.cpp.
References Qt::Key_Backtab, Qt::Key_Tab, QEvent::KeyPress, keyPressEvent(), next, Qt::NoModifier, and QWidget::setFocus().
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\reimp
Reimplemented from QWidget.
Definition at line 2713 of file qmenu.cpp.
References aboutToHide(), d, emit, and QMenuPrivate::mouseDown.
Here is the call graph for this function:| void QMenu::hideTearOffMenu | ( | ) |
This function will forcibly hide the torn off menu making it disappear from the user's desktop.
Definition at line 2163 of file qmenu.cpp.
References d.
Referenced by ~QMenu(), and setTearOffEnabled().
Here is the caller graph for this function:This signal is emitted when a menu action is highlighted; action is the action that caused the signal to be emitted.
Often this is used to update status information.
Referenced by actionEvent().
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Initialize option with the values from this menu 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.
Definition at line 1599 of file qmenu.cpp.
References QAction::actionGroup(), d, QStyleOptionMenuItem::DefaultItem, QPalette::Disabled, QStyleOptionMenuItem::Exclusive, QAction::font, font, QAction::icon, QAction::isCheckable(), QAction::isChecked(), QKeySequence::isEmpty(), QAction::isEnabled(), QActionGroup::isExclusive(), QAction::isIconVisibleInMenu(), QAction::isSeparator(), QAction::isShortcutVisibleInContextMenu(), QAction::menu(), QMenuPrivate::mouseDown, QKeySequence::NativeText, QStyleOptionMenuItem::NonExclusive, QStyleOptionMenuItem::Normal, QStyleOptionMenuItem::NotCheckable, palette, QMenuPrivate::rect(), QFont::resolve(), QStyleOptionMenuItem::Separator, QStyle::State_Active, QStyle::State_Enabled, QStyle::State_None, QStyle::State_Selected, QStyle::State_Sunken, QStyleOptionMenuItem::SubMenu, QAction::text, QKeySequence::toString(), and window().
Referenced by paintEvent().
Here is the call graph for this function: Here is the caller graph for this function:This convenience function inserts menu before action before and returns the menus menuAction().
Definition at line 1983 of file qmenu.cpp.
References QWidget::insertAction(), menu, and menuAction().
Here is the call graph for this function:This convenience function creates a new title action, i.e. an action with QAction::isSeparator() returning true but also having text and icon hints. The function inserts the newly created action into this menu's list of actions before action before and returns it.
The rendering of the hints is style and platform dependent. Widget styles can use the text and icon information in the rendering for sections, or can choose to ignore them and render sections like simple separators.
QMenu takes ownership of the returned QAction.
Definition at line 2049 of file qmenu.cpp.
References icon, QWidget::insertAction(), QAction::setSeparator(), and text.
Here is the call graph for this function:This convenience function creates a new title action, i.e. an action with QAction::isSeparator() returning true but also having text hint. The function inserts the newly created action into this menu's list of actions before action before and returns it.
The rendering of the hint is style and platform dependent. Widget styles can use the text information in the rendering for sections, or can choose to ignore it and render sections like simple separators.
QMenu takes ownership of the returned QAction.
Definition at line 2025 of file qmenu.cpp.
References QWidget::insertAction(), QAction::setSeparator(), and text.
Here is the call graph for this function: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's list of actions before action before and returns it.
QMenu takes ownership of the returned QAction.
Definition at line 2000 of file qmenu.cpp.
References QWidget::insertAction(), and QAction::setSeparator().
Here is the call graph for this function:| bool QMenu::isEmpty | ( | ) | const |
Returns true if there are no visible actions inserted into the menu, false otherwise.
Definition at line 2207 of file qmenu.cpp.
References QWidget::actions(), QList< T >::at(), i, QAction::isSeparator(), QAction::isVisible(), ret, and QList< T >::size().
Referenced by QMainWindow::contextMenuEvent(), and QLineEdit::createStandardContextMenu().
Here is the call graph for this function: Here is the caller graph for this function:| bool QMenu::isTearOffMenuVisible | ( | ) | const |
When a menu is torn off a second menu is shown to display the menu contents in a new window.
When the menu is in this mode and the menu is visible returns true; otherwise false.
\reimp
Reimplemented from QWidget.
Definition at line 3076 of file qmenu.cpp.
References QEvent::accept(), Qt::AltModifier, QString::at(), QApplication::beep(), QKeySequence::Cancel, Qt::CaseInsensitive, QWidget::close(), d, QWhatsThis::enterWhatsThisMode(), QApplication::focusWidget(), QWidget::height, i, QEvent::ignore(), QAction::isEnabled(), QWidget::isRightToLeft(), QAction::isSeparator(), QKeyEvent::key(), Qt::Key_Alt, Qt::Key_Back, Qt::Key_Backtab, Qt::Key_Control, Qt::Key_Down, Qt::Key_End, Qt::Key_Enter, Qt::Key_F1, Qt::Key_Home, Qt::Key_Left, Qt::Key_Meta, Qt::Key_PageDown, Qt::Key_PageUp, Qt::Key_Return, Qt::Key_Right, Qt::Key_Select, Qt::Key_Shift, Qt::Key_Space, Qt::Key_Tab, Qt::Key_Up, QKeySequence::mnemonic(), QKeyEvent::modifiers(), next, QStyle::pixelMetric(), QStyle::PM_MenuTearoffHeight, Q_FALLTHROUGH, QMenuPrivate::QMenuScroller::ScrollBottom, QMenuPrivate::QMenuScroller::ScrollCenter, QMenuPrivate::QMenuScroller::ScrollDown, QMenuPrivate::QMenuScroller::ScrollStay, QMenuPrivate::QMenuScroller::ScrollTop, QMenuPrivate::QMenuScroller::ScrollUp, QMenuPrivate::SelectedFromElsewhere, QMenuPrivate::SelectedFromKeyboard, QCoreApplication::sendEvent(), QStyle::SH_Menu_AllowActiveAndDisabled, QStyle::SH_Menu_KeyboardSearch, QStyle::SH_Menu_SelectionWrap, QStyle::SH_Menu_SpaceActivatesItem, QStyle::SH_MenuBar_AltKeyNavigation, Qt::ShiftModifier, QString::size(), QWidget::style(), QStyle::styleHint(), QAction::text, QKeyEvent::text(), QAction::Trigger, and QWidget::width.
Referenced by event(), and focusNextPrevChild().
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Reimplemented from QWidget.
Definition at line 3489 of file qmenu.cpp.
References d, and setActiveAction().
Here is the call graph for this function:| QAction * QMenu::menuAction | ( | ) | const |
Returns the action associated with this menu.
Definition at line 1069 of file qmenu.cpp.
Referenced by QMenuPrivate::_q_overrideMenuActionDestroyed(), addMenu(), QMenuBar::addMenu(), addMenu(), QMenuBar::addMenu(), addMenu(), QMenuBar::addMenu(), QMenuPrivate::init(), insertMenu(), QMenuBar::insertMenu(), QWidgetPlatformMenu::isEnabled(), QMenuSloppyState::processMouseEvent(), QWidgetPlatformMenu::setEnabled(), QMenuPrivate::setOverrideMenuAction(), QWidgetPlatformMenu::setVisible(), and waitForPopup().
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\reimp
Reimplemented from QWidget.
Definition at line 3439 of file qmenu.cpp.
References QSinglePointEvent::buttons(), QRect::contains(), d, QMenuSloppyState::EventDiscardsSloppyState, QMenuSloppyState::EventShouldBePropagated, QSinglePointEvent::globalPosition(), QAction::isSeparator(), QWidget::isVisible(), QMenuPrivate::mouseDown, QSinglePointEvent::position(), QWidget::rect, and QPointF::toPoint().
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\reimp
Reimplemented from QWidget.
Definition at line 2886 of file qmenu.cpp.
References contains(), QRect::contains(), d, QSinglePointEvent::globalPosition(), QPointF::isNull(), QMenuPrivate::mouseDown, QSinglePointEvent::position(), QWidget::rect, QWidget::setAttribute(), QPointF::toPoint(), QWidget::update(), and Qt::WA_NoMouseReplay.
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\reimp
Reimplemented from QWidget.
Definition at line 2914 of file qmenu.cpp.
References QSinglePointEvent::button(), d, QSinglePointEvent::globalPosition(), QAction::isEnabled(), Qt::LeftButton, QAction::menu(), QMenuPrivate::mouseDown, QSinglePointEvent::position(), QPointF::toPoint(), and QAction::Trigger.
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\reimp
Reimplemented from QWidget.
Definition at line 2742 of file qmenu.cpp.
References QStyle::CE_MenuEmptyArea, QStyle::CE_MenuItem, d, QStyleOptionMenuItem::EmptyArea, frame, QWidget::height, i, QStyleOption::initFrom(), initStyleOption(), QRect::intersects(), QFrame::lineWidth, QFrame::midLineWidth, QStyleOptionMenuItem::NotCheckable, opt, QWidget::palette, QStyle::PE_FrameMenu, QStyle::PE_PanelMenu, QStyle::pixelMetric(), QStyle::PM_MenuHMargin, QStyle::PM_MenuPanelWidth, QStyle::PM_MenuTearoffHeight, QStyle::PM_MenuVMargin, QPaintEvent::rect(), QWidget::rect, QStyleOption::rect, QMenuPrivate::QMenuScroller::ScrollDown, QMenuPrivate::ScrollerTearOffItem::ScrollDown, QMenuPrivate::QMenuScroller::ScrollUp, QMenuPrivate::ScrollerTearOffItem::ScrollUp, QRect::setRect(), QRect::setTop(), QStyle::State_None, QWidget::style(), QRect::united(), and QWidget::width.
Here is the call graph for this function:| QPlatformMenu * QMenu::platformMenu | ( | ) |
Definition at line 3710 of file qmenu.cpp.
Referenced by QMenuPrivate::copyActionToPlatformItem(), QMenuPrivate::createPlatformMenu(), QMenuPrivate::insertActionInPlatformMenu(), QMenuPrivate::setPlatformMenu(), setPlatformMenu(), QMenuPrivate::syncPlatformMenu(), and QSystemTrayIconPrivate::updateMenu_sys().
Here is the caller graph for this function:Displays the menu so that the action atAction will be at the specified global position p.
To translate a widget's local coordinates into global coordinates, use QWidget::mapToGlobal().
When positioning a menu with exec() or popup(), bear in mind that you cannot rely on the menu's current size(). For performance reasons, the menu adapts its size only when necessary, so in many cases, the size before and after the show is different. Instead, use sizeHint() which calculates the proper size depending on the menu's current contents.
Definition at line 2310 of file qmenu.cpp.
References d.
Referenced by QWidgetTextControlPrivate::contextMenuEvent(), QLineEdit::contextMenuEvent(), QLabel::contextMenuEvent(), QMainWindow::contextMenuEvent(), QMenuBarPrivate::popupAction(), QMenuPrivate::setCurrentAction(), QFileDialogPrivate::showContextMenu(), and QWidgetPlatformMenu::showPopup().
Here is the caller graph for this function:| bool QMenu::separatorsCollapsible | ( | ) | const |
Sets the currently highlighted action to act.
Definition at line 2180 of file qmenu.cpp.
References d, and QMenuPrivate::QMenuScroller::ScrollCenter.
Referenced by QMenuPrivate::hideMenu(), and leaveEvent().
Here is the caller graph for this function:This sets the default action to act.
The default action may have a visual cue, depending on the current QStyle. A default action usually indicates what will happen by default when a drop occurs.
Definition at line 1116 of file qmenu.cpp.
References icon.
Referenced by addMenu(), QMenuBar::addMenu(), and QWidgetPlatformMenu::setIcon().
Here is the caller graph for this function:| void QMenu::setPlatformMenu | ( | QPlatformMenu * | platformMenu | ) |
Definition at line 3718 of file qmenu.cpp.
References platformMenu().
Here is the call graph for this function:| void QMenu::setSeparatorsCollapsible | ( | bool | collapse | ) |
Definition at line 3742 of file qmenu.cpp.
References d, QWidget::isVisible(), and QWidget::update().
Referenced by QWidgetPlatformMenu::syncSeparatorsCollapsible().
Here is the call graph for this function: Here is the caller graph for this function:| void QMenu::setTearOffEnabled | ( | bool | b | ) |
Definition at line 2092 of file qmenu.cpp.
References d, hideTearOffMenu(), QWidget::isVisible(), QWidget::resize(), and sizeHint().
Here is the call graph for this function:Definition at line 1097 of file qmenu.cpp.
References text.
Referenced by QUnicodeControlCharacterMenu::QUnicodeControlCharacterMenu(), and QWidgetPlatformMenu::setText().
Here is the caller graph for this function:| void QMenu::setToolTipsVisible | ( | bool | visible | ) |
Definition at line 3775 of file qmenu.cpp.
References d, and QWidget::visible.
| void QMenu::showTearOffMenu | ( | ) |
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
This function will forcibly show the torn off menu making it appear on the user's desktop under the mouse currsor.
Definition at line 2152 of file qmenu.cpp.
References QCursor::pos(), and showTearOffMenu().
Referenced by showTearOffMenu().
Here is the call graph for this function: Here is the caller graph for this function:This function will forcibly show the torn off menu making it appear on the user's desktop at the specified global position pos.
Definition at line 2133 of file qmenu.cpp.
References d, QWidget::pos, QTornOffMenu, sizeHint(), QPoint::x(), and QPoint::y().
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Reimplemented from QWidget.
Definition at line 2269 of file qmenu.cpp.
References QRect::bottom(), QStyle::CT_Menu, d, QRect::height(), i, QStyleOption::initFrom(), QRect::isNull(), opt, QStyle::pixelMetric(), QStyle::PM_MenuHMargin, QStyle::PM_MenuPanelWidth, QStyle::PM_MenuVMargin, QWidget::rect, QRect::right(), QRect::setHeight(), QStyle::sizeFromContents(), QWidget::style(), QRect::width(), QRect::x(), and QRect::y().
Referenced by QTornOffMenu::QTornOffMenu(), actionEvent(), QTornOffMenu::actionEvent(), changeEvent(), QMenuBarPrivate::popupAction(), setTearOffEnabled(), and showTearOffMenu().
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\reimp
Reimplemented from QObject.
Definition at line 3501 of file qmenu.cpp.
References d, QMenuPrivate::QMenuScroller::ScrollNone, and QTimerEvent::timerId().
Here is the call graph for this function:This signal is emitted when an action in this menu is triggered.
action is the action that caused the signal to be emitted.
Normally, you connect each menu action's \l{QAction::}{triggered()} signal to its own custom slot, but sometimes you will want to connect several actions to a single slot, for example, when you have a group of closely related actions, such as "left justify", "center", "right justify".
Referenced by actionEvent().
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Definition at line 224 of file qmenu.h.
Referenced by showTearOffMenu().
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The icon of the menu.
This is equivalent to the QAction::icon property of the menuAction().
By default, if no icon is explicitly set, this property contains a null icon.
Definition at line 33 of file qmenu.h.
Referenced by addMenu(), addSection(), and insertSection().
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whether consecutive separators should be collapsed
This property specifies whether consecutive separators in the menu should be visually collapsed to a single one. Separators at the beginning or the end of the menu are also hidden.
By default, this property is true.
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whether the menu supports being torn off
When true, the menu contains a special tear-off item (often shown as a dashed line at the top of the menu) that creates a copy of the menu when it is triggered.
This "torn-off" copy lives in a separate window. It contains the same menu items as the original menu, with the exception of the tear-off handle.
By default, this property is false.
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The title of the menu.
This is equivalent to the QAction::text property of the menuAction().
By default, this property contains an empty string.
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1.10.0