Qt 4.8
Public Slots | Signals | Public Functions | Protected Functions | Properties | Friends | List of all members
QAbstractButton Class Referenceabstract

The QAbstractButton class is the abstract base class of button widgets, providing functionality common to buttons. More...

#include <qabstractbutton.h>

Inheritance diagram for QAbstractButton:
QWidget QObject QPaintDevice CloseButton QCheckBox QDockWidgetTitleButton QPushButton QRadioButton QTableCornerButton QToolBoxButton QToolButton QVistaBackButton

Public Slots

void animateClick (int msec=100)
 Performs an animated click: the button is pressed immediately, and released msec milliseconds later (the default is 100 ms). More...
 
void click ()
 Performs a click. More...
 
void setChecked (bool)
 
void setIconSize (const QSize &size)
 
void toggle ()
 Toggles the state of a checkable button. More...
 
- Public Slots inherited from QWidget
bool close ()
 Closes this widget. More...
 
void hide ()
 Hides the widget. More...
 
void lower ()
 Lowers the widget to the bottom of the parent widget's stack. More...
 
void raise ()
 Raises this widget to the top of the parent widget's stack. More...
 
void repaint ()
 Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the widget is hidden. More...
 
void setDisabled (bool)
 Disables widget input events if disable is true; otherwise enables input events. More...
 
void setEnabled (bool)
 
void setFocus ()
 Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the active window. More...
 
void setHidden (bool hidden)
 Convenience function, equivalent to setVisible(!hidden). More...
 
QT_MOC_COMPAT void setShown (bool shown)
 Use setVisible(shown) instead. More...
 
void setStyleSheet (const QString &styleSheet)
 
virtual void setVisible (bool visible)
 
void setWindowModified (bool)
 
void setWindowTitle (const QString &)
 
void show ()
 Shows the widget and its child widgets. More...
 
void showFullScreen ()
 Shows the widget in full-screen mode. More...
 
void showMaximized ()
 Shows the widget maximized. More...
 
void showMinimized ()
 Shows the widget minimized, as an icon. More...
 
void showNormal ()
 Restores the widget after it has been maximized or minimized. More...
 
void update ()
 Updates the widget unless updates are disabled or the widget is hidden. More...
 
- Public Slots inherited from QObject
void deleteLater ()
 Schedules this object for deletion. More...
 

Signals

void clicked (bool checked=false)
 This signal is emitted when the button is activated (i.e. More...
 
void pressed ()
 This signal is emitted when the button is pressed down. More...
 
void released ()
 This signal is emitted when the button is released. More...
 
void toggled (bool checked)
 This signal is emitted whenever a checkable button changes its state. More...
 
- Signals inherited from QWidget
void customContextMenuRequested (const QPoint &pos)
 This signal is emitted when the widget's contextMenuPolicy is Qt::CustomContextMenu, and the user has requested a context menu on the widget. More...
 
- Signals inherited from QObject
void destroyed (QObject *=0)
 This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
 

Public Functions

bool autoExclusive () const
 
bool autoRepeat () const
 
int autoRepeatDelay () const
 
int autoRepeatInterval () const
 
QButtonGroupgroup () const
 Returns the group that this button belongs to. More...
 
QIcon icon () const
 
QSize iconSize () const
 
bool isCheckable () const
 
bool isChecked () const
 
bool isDown () const
 
 QAbstractButton (QWidget *parent=0)
 Constructs an abstract button with a parent. More...
 
void setAutoExclusive (bool)
 
void setAutoRepeat (bool)
 
void setAutoRepeatDelay (int)
 
void setAutoRepeatInterval (int)
 
void setCheckable (bool)
 
void setDown (bool)
 
void setIcon (const QIcon &icon)
 
void setShortcut (const QKeySequence &key)
 
void setText (const QString &text)
 
QKeySequence shortcut () const
 
QString text () const
 
 ~QAbstractButton ()
 Destroys the button. More...
 
- Public Functions inherited from QWidget
bool acceptDrops () const
 
QString accessibleDescription () const
 
QString accessibleName () const
 
QList< QAction * > actions () const
 Returns the (possibly empty) list of this widget's actions. More...
 
void activateWindow ()
 Sets the top-level widget containing this widget to be the active window. More...
 
void addAction (QAction *action)
 Appends the action action to this widget's list of actions. More...
 
void addActions (QList< QAction *> actions)
 Appends the actions actions to this widget's list of actions. More...
 
void adjustSize ()
 Adjusts the size of the widget to fit its contents. More...
 
bool autoFillBackground () const
 
QPalette::ColorRole backgroundRole () const
 Returns the background role of the widget. More...
 
QSize baseSize () const
 
QWidgetchildAt (int x, int y) const
 Returns the visible child widget at the position ({x}, {y}) in the widget's coordinate system. More...
 
QWidgetchildAt (const QPoint &p) const
 Returns the visible child widget at point p in the widget's own coordinate system. More...
 
QRect childrenRect () const
 
QRegion childrenRegion () const
 
void clearFocus ()
 Takes keyboard input focus from the widget. More...
 
void clearMask ()
 Removes any mask set by setMask(). More...
 
QMargins contentsMargins () const
 The contentsMargins function returns the widget's contents margins. More...
 
QRect contentsRect () const
 Returns the area inside the widget's margins. More...
 
Qt::ContextMenuPolicy contextMenuPolicy () const
 
void createWinId ()
 
QCursor cursor () const
 
int devType () const
 
WId effectiveWinId () const
 Returns the effective window system identifier of the widget, i. More...
 
void ensurePolished () const
 Ensures that the widget has been polished by QStyle (i.e., has a proper font and palette). More...
 
Qt::FocusPolicy focusPolicy () const
 
QWidgetfocusProxy () const
 Returns the focus proxy, or 0 if there is no focus proxy. More...
 
QWidgetfocusWidget () const
 Returns the last child of this widget that setFocus had been called on. More...
 
const QFontfont () const
 
QFontInfo fontInfo () const
 Returns the font info for the widget's current font. More...
 
QFontMetrics fontMetrics () const
 Returns the font metrics for the widget's current font. More...
 
QPalette::ColorRole foregroundRole () const
 Returns the foreground role. More...
 
QRect frameGeometry () const
 
QSize frameSize () const
 
const QRectgeometry () const
 
void getContentsMargins (int *left, int *top, int *right, int *bottom) const
 Returns the widget's contents margins for left, top, right, and bottom. More...
 
HDC getDC () const
 Returns the window system handle of the widget, for low-level access. More...
 
void grabGesture (Qt::GestureType type, Qt::GestureFlags flags=Qt::GestureFlags())
 Subscribes the widget to a given gesture with specific flags. More...
 
void grabKeyboard ()
 Grabs the keyboard input. More...
 
void grabMouse ()
 Grabs the mouse input. More...
 
void grabMouse (const QCursor &)
 
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. More...
 
QGraphicsEffectgraphicsEffect () const
 The graphicsEffect function returns a pointer to the widget's graphics effect. More...
 
QGraphicsProxyWidgetgraphicsProxyWidget () const
 Returns the proxy widget for the corresponding embedded widget in a graphics view; otherwise returns 0. More...
 
bool hasFocus () const
 
bool hasMouseTracking () const
 
int height () const
 
virtual int heightForWidth (int) const
 Returns the preferred height for this widget, given the width w. More...
 
QInputContextinputContext ()
 This function returns the QInputContext for this widget. More...
 
Qt::InputMethodHints inputMethodHints () const
 
virtual QVariant inputMethodQuery (Qt::InputMethodQuery) const
 This method is only relevant for input widgets. More...
 
void insertAction (QAction *before, QAction *action)
 Inserts the action action to this widget's list of actions, before the action before. More...
 
void insertActions (QAction *before, QList< QAction *> actions)
 Inserts the actions actions to this widget's list of actions, before the action before. More...
 
WId internalWinId () const
 Returns the window system identifier of the widget, or 0 if the widget is not created yet. More...
 
bool isActiveWindow () const
 
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. More...
 
bool isEnabled () const
 
bool isEnabledTo (QWidget *) const
 Returns true if this widget would become enabled if ancestor is enabled; otherwise returns false. More...
 
bool isEnabledToTLW () const
 This function is deprecated. More...
 
bool isFullScreen () const
 
bool isHidden () const
 Returns true if the widget is hidden, otherwise returns false. More...
 
bool isLeftToRight () const
 
bool isMaximized () const
 
bool isMinimized () const
 
bool isModal () const
 
bool isRightToLeft () const
 
bool isTopLevel () const
 Use isWindow() instead. More...
 
bool isVisible () const
 
bool isVisibleTo (QWidget *) const
 Returns true if this widget would become visible if ancestor is shown; otherwise returns false. More...
 
bool isWindow () const
 Returns true if the widget is an independent window, otherwise returns false. More...
 
bool isWindowModified () const
 
QLayoutlayout () const
 Returns the layout manager that is installed on this widget, or 0 if no layout manager is installed. More...
 
Qt::LayoutDirection layoutDirection () const
 
QLocale locale () const
 
Qt::HANDLE macCGHandle () const
 Returns the CoreGraphics handle of the widget. More...
 
Qt::HANDLE macQDHandle () const
 Returns the QuickDraw handle of the widget. More...
 
QPoint mapFrom (QWidget *, const QPoint &) const
 Translates the widget coordinate pos from the coordinate system of parent to this widget's coordinate system. More...
 
QPoint mapFromGlobal (const QPoint &) const
 Translates the global screen coordinate pos to widget coordinates. More...
 
QPoint mapFromParent (const QPoint &) const
 Translates the parent widget coordinate pos to widget coordinates. More...
 
QPoint mapTo (QWidget *, const QPoint &) const
 Translates the widget coordinate pos to the coordinate system of parent. More...
 
QPoint mapToGlobal (const QPoint &) const
 Translates the widget coordinate pos to global screen coordinates. More...
 
QPoint mapToParent (const QPoint &) const
 Translates the widget coordinate pos to a coordinate in the parent widget. More...
 
QRegion mask () const
 Returns the mask currently set on a widget. More...
 
int maximumHeight () const
 
QSize maximumSize () const
 
int maximumWidth () const
 
int minimumHeight () const
 
QSize minimumSize () const
 
virtual QSize minimumSizeHint () const
 
int minimumWidth () const
 
void move (int x, int y)
 This corresponds to move(QPoint(x, y)). More...
 
void move (const QPoint &)
 
QWidgetnativeParentWidget () const
 Returns the native parent for this widget, i. More...
 
QWidgetnextInFocusChain () const
 Returns the next widget in this widget's focus chain. More...
 
QRect normalGeometry () const
 
void overrideWindowFlags (Qt::WindowFlags type)
 Sets the window flags for the widget to flags, without telling the window system. More...
 
void overrideWindowState (Qt::WindowStates state)
 
QPaintEnginepaintEngine () const
 Returns the widget's paint engine. More...
 
const QPalettepalette () const
 
QWidgetparentWidget () const
 Returns the parent of this widget, or 0 if it does not have any parent widget. More...
 
QPoint pos () const
 
QWidgetpreviousInFocusChain () const
 The previousInFocusChain function returns the previous widget in this widget's focus chain. More...
 
 QWidget (QWidget *parent=0, Qt::WindowFlags f=0)
 Constructs a widget which is a child of parent, with widget flags set to f. More...
 
QRect rect () const
 
void releaseDC (HDC) const
 Releases the HDC hdc acquired by a previous call to getDC(). More...
 
void releaseKeyboard ()
 Releases the keyboard grab. More...
 
void releaseMouse ()
 Releases the mouse grab. More...
 
void releaseShortcut (int id)
 Removes the shortcut with the given id from Qt's shortcut system. More...
 
void removeAction (QAction *action)
 Removes the action action from this widget's list of actions. More...
 
void render (QPaintDevice *target, const QPoint &targetOffset=QPoint(), const QRegion &sourceRegion=QRegion(), RenderFlags renderFlags=RenderFlags(DrawWindowBackground|DrawChildren))
 Renders the sourceRegion of this widget into the target using renderFlags to determine how to render. More...
 
void render (QPainter *painter, const QPoint &targetOffset=QPoint(), const QRegion &sourceRegion=QRegion(), RenderFlags renderFlags=RenderFlags(DrawWindowBackground|DrawChildren))
 Renders the widget into the painter's QPainter::device(). More...
 
void repaint (int x, int y, int w, int h)
 This version repaints a rectangle (x, y, w, h) inside the widget. More...
 
void repaint (const QRect &)
 This version repaints a rectangle rect inside the widget. More...
 
void repaint (const QRegion &)
 This version repaints a region rgn inside the widget. More...
 
void resize (int w, int h)
 This corresponds to resize(QSize(w, h)). More...
 
void resize (const QSize &)
 
bool restoreGeometry (const QByteArray &geometry)
 Restores the geometry and state top-level widgets stored in the byte array geometry. More...
 
QByteArray saveGeometry () const
 Saves the current geometry and state for top-level widgets. More...
 
void scroll (int dx, int dy)
 Scrolls the widget including its children dx pixels to the right and dy downward. More...
 
void scroll (int dx, int dy, const QRect &)
 This version only scrolls r and does not move the children of the widget. More...
 
void setAcceptDrops (bool on)
 
void setAccessibleDescription (const QString &description)
 
void setAccessibleName (const QString &name)
 
void setAttribute (Qt::WidgetAttribute, bool on=true)
 Sets the attribute attribute on this widget if on is true; otherwise clears the attribute. More...
 
void setAutoFillBackground (bool enabled)
 
void setBackgroundRole (QPalette::ColorRole)
 Sets the background role of the widget to role. More...
 
void setBaseSize (const QSize &)
 
void setBaseSize (int basew, int baseh)
 This corresponds to setBaseSize(QSize(basew, baseh)). More...
 
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. More...
 
void setContentsMargins (const QMargins &margins)
 The setContentsMargins function sets the margins around the widget's contents. More...
 
void setContextMenuPolicy (Qt::ContextMenuPolicy policy)
 
void setCursor (const QCursor &)
 
void setFixedHeight (int h)
 Sets both the minimum and maximum heights of the widget to h without changing the widths. More...
 
void setFixedSize (const QSize &)
 Sets both the minimum and maximum sizes of the widget to s, thereby preventing it from ever growing or shrinking. More...
 
void setFixedSize (int w, int h)
 Sets the width of the widget to w and the height to h. More...
 
void setFixedWidth (int w)
 Sets both the minimum and maximum width of the widget to w without changing the heights. More...
 
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 active window. More...
 
void setFocusPolicy (Qt::FocusPolicy policy)
 
void setFocusProxy (QWidget *)
 Sets the widget's focus proxy to widget w. More...
 
void setFont (const QFont &)
 Use the single-argument overload instead. More...
 
void setForegroundRole (QPalette::ColorRole)
 Sets the foreground role of the widget to role. More...
 
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)). More...
 
void setGeometry (const QRect &)
 
void setGraphicsEffect (QGraphicsEffect *effect)
 The setGraphicsEffect function is for setting the widget's graphics effect. More...
 
void setInputContext (QInputContext *)
 This function sets the input context context on this widget. More...
 
void setInputMethodHints (Qt::InputMethodHints hints)
 
void setLayout (QLayout *)
 Sets the layout manager for this widget to layout. More...
 
void setLayoutDirection (Qt::LayoutDirection direction)
 
void setLocale (const QLocale &locale)
 
void setMask (const QBitmap &)
 Causes only the pixels of the widget for which bitmap has a corresponding 1 bit to be visible. More...
 
void setMask (const QRegion &)
 Causes only the parts of the widget which overlap region to be visible. More...
 
void setMaximumHeight (int maxh)
 
void setMaximumSize (const QSize &)
 
void setMaximumSize (int maxw, int maxh)
 This function corresponds to setMaximumSize(QSize(maxw, maxh)). More...
 
void setMaximumWidth (int maxw)
 
void setMinimumHeight (int minh)
 
void setMinimumSize (const QSize &)
 
void setMinimumSize (int minw, int minh)
 This function corresponds to setMinimumSize(QSize(minw, minh)). More...
 
void setMinimumWidth (int minw)
 
void setMouseTracking (bool enable)
 
void setPalette (const QPalette &)
 Use the single-argument overload instead. More...
 
void setParent (QWidget *parent)
 Sets the parent of the widget to parent, and resets the window flags. More...
 
void setParent (QWidget *parent, Qt::WindowFlags f)
 This function also takes widget flags, f as an argument. More...
 
void setShortcutAutoRepeat (int id, bool enable=true)
 If enable is true, auto repeat of the shortcut with the given id is enabled; otherwise it is disabled. More...
 
void setShortcutEnabled (int id, bool enable=true)
 If enable is true, the shortcut with the given id is enabled; otherwise the shortcut is disabled. More...
 
void setSizeIncrement (const QSize &)
 
void setSizeIncrement (int w, int h)
 Sets the x (width) size increment to w and the y (height) size increment to h. More...
 
void setSizePolicy (QSizePolicy)
 
void setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical)
 Sets the size policy of the widget to horizontal and vertical, with standard stretch and no height-for-width. More...
 
void setStatusTip (const QString &)
 
void setStyle (QStyle *)
 Sets the widget's GUI style to style. More...
 
void setToolTip (const QString &)
 
void setUpdatesEnabled (bool enable)
 
void setupUi (QWidget *widget)
 Sets up the user interface for the specified widget. More...
 
void setWhatsThis (const QString &)
 
void setWindowFilePath (const QString &filePath)
 
void setWindowFlags (Qt::WindowFlags type)
 
void setWindowIcon (const QIcon &icon)
 
void setWindowIconText (const QString &)
 
void setWindowModality (Qt::WindowModality windowModality)
 
void setWindowOpacity (qreal level)
 
void setWindowRole (const QString &)
 Sets the window's role to role. More...
 
void setWindowState (Qt::WindowStates state)
 Sets the window state to windowState. More...
 
void setWindowSurface (QWindowSurface *surface)
 Sets the window surface to be the surface specified. More...
 
QSize size () const
 
virtual QSize sizeHint () const
 
QSize sizeIncrement () const
 
QSizePolicy sizePolicy () const
 
void stackUnder (QWidget *)
 Places the widget under w in the parent widget's stack. More...
 
QString statusTip () const
 
QStylestyle () const
 
QString styleSheet () const
 
bool testAttribute (Qt::WidgetAttribute) const
 Returns true if attribute attribute is set on this widget; otherwise returns false. More...
 
QString toolTip () const
 
QWidgettopLevelWidget () const
 
bool underMouse () const
 Returns true if the widget is under the mouse cursor; otherwise returns false. More...
 
void ungrabGesture (Qt::GestureType type)
 Unsubscribes the widget from a given gesture type. More...
 
void unsetCursor ()
 
void unsetLayoutDirection ()
 
void unsetLocale ()
 
void update (int x, int y, int w, int h)
 This version updates a rectangle (x, y, w, h) inside the widget. More...
 
void update (const QRect &)
 This version updates a rectangle rect inside the widget. More...
 
void update (const QRegion &)
 This version repaints a region rgn inside the widget. More...
 
void updateGeometry ()
 Notifies the layout system that this widget has changed and may need to change geometry. More...
 
bool updatesEnabled () const
 
QRegion visibleRegion () const
 Returns the unobscured region where paint events can occur. More...
 
QString whatsThis () const
 
int width () const
 
QWidgetwindow () const
 Returns the window for this widget, i.e. More...
 
QString windowFilePath () const
 
Qt::WindowFlags windowFlags () const
 Window flags are a combination of a type (e. More...
 
QIcon windowIcon () const
 
QString windowIconText () const
 
Qt::WindowModality windowModality () const
 
qreal windowOpacity () const
 
QString windowRole () const
 Returns the window's role, or an empty string. More...
 
Qt::WindowStates windowState () const
 Returns the current window state. More...
 
QWindowSurfacewindowSurface () const
 Returns the QWindowSurface this widget will be drawn into. More...
 
QString windowTitle () const
 
Qt::WindowType windowType () const
 Returns the window type of this widget. More...
 
WId winId () const
 Returns the window system identifier of the widget. More...
 
int x () const
 
const QX11Infox11Info () const
 Returns information about the configuration of the X display used to display the widget. More...
 
Qt::HANDLE x11PictureHandle () const
 Returns the X11 Picture handle of the widget for XRender support. More...
 
int y () const
 
 ~QWidget ()
 Destroys the widget. More...
 
- Public Functions inherited from QObject
bool blockSignals (bool b)
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
 
const QObjectListchildren () const
 Returns a list of child objects. More...
 
bool connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
 
bool disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
 
bool disconnect (const QObject *receiver, const char *member=0)
 
void dumpObjectInfo ()
 Dumps information about signal connections, etc. More...
 
void dumpObjectTree ()
 Dumps a tree of children to the debug output. More...
 
QList< QByteArraydynamicPropertyNames () const
 Returns the names of all properties that were dynamically added to the object using setProperty(). More...
 
virtual bool eventFilter (QObject *, QEvent *)
 Filters events if this object has been installed as an event filter for the watched object. More...
 
template<typename T >
findChild (const QString &aName=QString()) const
 Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
 
template<typename T >
QList< T > findChildren (const QString &aName=QString()) 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. More...
 
template<typename T >
QList< T > findChildren (const QRegExp &re) const
 
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. More...
 
void installEventFilter (QObject *)
 Installs an event filter filterObj on this object. More...
 
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false. More...
 
void killTimer (int id)
 Kills the timer with timer identifier, id. More...
 
virtual const QMetaObjectmetaObject () const
 Returns a pointer to the meta-object of this object. More...
 
void moveToThread (QThread *thread)
 Changes the thread affinity for this object and its children. More...
 
QString objectName () const
 
QObjectparent () const
 Returns a pointer to the parent object. More...
 
QVariant property (const char *name) const
 Returns the value of the object's name property. More...
 
Q_INVOKABLE QObject (QObject *parent=0)
 Constructs an object with parent object parent. More...
 
void removeEventFilter (QObject *)
 Removes an event filter object obj from this object. More...
 
void setObjectName (const QString &name)
 
void setParent (QObject *)
 Makes the object a child of parent. More...
 
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value. More...
 
void setUserData (uint id, QObjectUserData *data)
 
bool signalsBlocked () const
 Returns true if signals are blocked; otherwise returns false. More...
 
int startTimer (int interval)
 Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
 
QThreadthread () const
 Returns the thread in which the object lives. More...
 
QObjectUserDatauserData (uint id) const
 
virtual ~QObject ()
 Destroys the object, deleting all its child objects. More...
 
- Public Functions inherited from QPaintDevice
int colorCount () const
 
int depth () const
 
int height () const
 
int heightMM () const
 
int logicalDpiX () const
 
int logicalDpiY () const
 
QT_DEPRECATED int numColors () const
 
bool paintingActive () const
 
int physicalDpiX () const
 
int physicalDpiY () const
 
int width () const
 
int widthMM () const
 
virtual ~QPaintDevice ()
 

Protected Functions

void changeEvent (QEvent *e)
 Reimplemented Function More...
 
virtual void checkStateSet ()
 This virtual handler is called when setChecked() was called, unless it was called from within nextCheckState(). More...
 
bool event (QEvent *e)
 Reimplemented Function More...
 
void focusInEvent (QFocusEvent *e)
 Reimplemented Function More...
 
void focusOutEvent (QFocusEvent *e)
 Reimplemented Function More...
 
virtual bool hitButton (const QPoint &pos) const
 Returns true if pos is inside the clickable button rectangle; otherwise returns false. More...
 
void keyPressEvent (QKeyEvent *e)
 Reimplemented Function More...
 
void keyReleaseEvent (QKeyEvent *e)
 Reimplemented Function More...
 
void mouseMoveEvent (QMouseEvent *e)
 Reimplemented Function More...
 
void mousePressEvent (QMouseEvent *e)
 Reimplemented Function More...
 
void mouseReleaseEvent (QMouseEvent *e)
 Reimplemented Function More...
 
virtual void nextCheckState ()
 This virtual handler is called when a button is clicked. More...
 
virtual void paintEvent (QPaintEvent *e)=0
 Reimplemented Function More...
 
 QAbstractButton (QAbstractButtonPrivate &dd, QWidget *parent=0)
 
void timerEvent (QTimerEvent *e)
 This event handler can be reimplemented in a subclass to receive timer events for the object. More...
 
- Protected Functions inherited from QWidget
virtual void actionEvent (QActionEvent *)
 This event handler is called with the given event whenever the widget's actions are changed. More...
 
virtual void closeEvent (QCloseEvent *)
 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. More...
 
virtual void contextMenuEvent (QContextMenuEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive widget context menu events. More...
 
void create (WId=0, bool initializeWindow=true, bool destroyOldWindow=true)
 Creates a new widget window if window is 0, otherwise sets the widget's window to window. More...
 
void destroy (bool destroyWindow=true, bool destroySubWindows=true)
 Frees up window system resources. More...
 
virtual void dragEnterEvent (QDragEnterEvent *)
 This event handler is called when a drag is in progress and the mouse enters this widget. More...
 
virtual void dragLeaveEvent (QDragLeaveEvent *)
 This event handler is called when a drag is in progress and the mouse leaves this widget. More...
 
virtual void dragMoveEvent (QDragMoveEvent *)
 This event handler is called if a drag is in progress, and when any of the following conditions occur: the cursor enters this widget, the cursor moves within this widget, or a modifier key is pressed on the keyboard while this widget has the focus. More...
 
virtual void dropEvent (QDropEvent *)
 This event handler is called when the drag is dropped on this widget. More...
 
virtual void enabledChange (bool)
 
virtual void enterEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive widget enter events which are passed in the event parameter. More...
 
bool focusNextChild ()
 Finds a new widget to give the keyboard focus to, as appropriate for Tab, and returns true if it can find a new widget, or false if it can't. More...
 
virtual bool focusNextPrevChild (bool next)
 Finds a new widget to give the keyboard focus to, as appropriate for Tab and Shift+Tab, and returns true if it can find a new widget, or false if it can't. More...
 
bool focusPreviousChild ()
 Finds a new widget to give the keyboard focus to, as appropriate for Shift+Tab, and returns true if it can find a new widget, or false if it can't. More...
 
virtual void fontChange (const QFont &)
 
virtual void hideEvent (QHideEvent *)
 This event handler can be reimplemented in a subclass to receive widget hide events. More...
 
virtual void inputMethodEvent (QInputMethodEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive Input Method composition events. More...
 
virtual void languageChange ()
 
virtual void leaveEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive widget leave events which are passed in the event parameter. More...
 
virtual bool macEvent (EventHandlerCallRef, EventRef)
 This special event handler can be reimplemented in a subclass to receive native Macintosh events. More...
 
int metric (PaintDeviceMetric) const
 Internal implementation of the virtual QPaintDevice::metric() function. More...
 
virtual void mouseDoubleClickEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse double click events for the widget. More...
 
virtual void moveEvent (QMoveEvent *)
 This event handler can be reimplemented in a subclass to receive widget move events which are passed in the event parameter. More...
 
virtual void paletteChange (const QPalette &)
 
 QWidget (QWidgetPrivate &d, QWidget *parent, Qt::WindowFlags f)
 
virtual bool qwsEvent (QWSEvent *)
 This special event handler can be reimplemented in a subclass to receive native Qt for Embedded Linux events which are passed in the event parameter. More...
 
void resetInputContext ()
 This function can be called on the widget that currently has focus to reset the input method operating on it. More...
 
virtual void resizeEvent (QResizeEvent *)
 This event handler can be reimplemented in a subclass to receive widget resize events which are passed in the event parameter. More...
 
virtual void showEvent (QShowEvent *)
 This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter. More...
 
virtual void styleChange (QStyle &)
 
virtual void tabletEvent (QTabletEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive tablet events for the widget. More...
 
virtual void wheelEvent (QWheelEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive wheel events for the widget. More...
 
virtual void windowActivationChange (bool)
 
virtual bool winEvent (MSG *message, long *result)
 This special event handler can be reimplemented in a subclass to receive native Windows events which are passed in the message parameter. More...
 
virtual bool x11Event (XEvent *)
 This special event handler can be reimplemented in a subclass to receive native X11 events passed in the event parameter. More...
 
- Protected Functions inherited from QObject
virtual void childEvent (QChildEvent *)
 This event handler can be reimplemented in a subclass to receive child events. More...
 
virtual void connectNotify (const char *signal)
 This virtual function is called when something has been connected to signal in this object. More...
 
virtual void customEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive custom events. More...
 
virtual void disconnectNotify (const char *signal)
 This virtual function is called when something has been disconnected from signal in this object. More...
 
 QObject (QObjectPrivate &dd, QObject *parent=0)
 
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal. More...
 
QObjectsender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
 
int senderSignalIndex () const
 
- Protected Functions inherited from QPaintDevice
 QPaintDevice ()
 

Properties

bool autoExclusive
 whether auto-exclusivity is enabled More...
 
bool autoRepeat
 whether autoRepeat is enabled More...
 
int autoRepeatDelay
 the initial delay of auto-repetition More...
 
int autoRepeatInterval
 the interval of auto-repetition More...
 
bool checkable
 whether the button is checkable More...
 
bool checked
 whether the button is checked More...
 
bool down
 whether the button is pressed down More...
 
QIcon icon
 the icon shown on the button More...
 
QSize iconSize
 the icon size used for this button. More...
 
QKeySequence shortcut
 the mnemonic associated with the button More...
 
QString text
 the text shown on the button More...
 

Friends

class QButtonGroup
 

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
}
 
- Static Public Functions inherited from QWidget
static QWidgetfind (WId)
 Returns a pointer to the widget with window identifer/handle id. More...
 
static QWidgetkeyboardGrabber ()
 Returns the widget that is currently grabbing the keyboard input. More...
 
static QWidgetmouseGrabber ()
 Returns the widget that is currently grabbing the mouse input. More...
 
static void setTabOrder (QWidget *, QWidget *)
 Puts the second widget after the first widget in the focus order. More...
 
- Static Public Functions inherited from QObject
static bool connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
 
static bool connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
 
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 Disconnects signal in object sender from method in object receiver. More...
 
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
 
static uint registerUserData ()
 
static QString tr (const char *sourceText, const char *comment=0, int n=-1)
 
static QString trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
 
- Static Public Functions inherited from QPaintDevice
static QWSDisplayqwsDisplay ()
 
- Static Public Variables inherited from QObject
static const QMetaObject staticMetaObject
 This variable stores the meta-object for the class. More...
 
- Protected Slots inherited from QWidget
void updateMicroFocus ()
 Updates the widget's micro focus. More...
 
- Protected Variables inherited from QObject
QScopedPointer< QObjectDatad_ptr
 
- Protected Variables inherited from QPaintDevice
ushort painters
 
- Static Protected Variables inherited from QObject
static const QMetaObject staticQtMetaObject
 

Detailed Description

The QAbstractButton class is the abstract base class of button widgets, providing functionality common to buttons.

This class implements an abstract button. Subclasses of this class handle user actions, and specify how the button is drawn.

QAbstractButton provides support for both push buttons and checkable (toggle) buttons. Checkable buttons are implemented in the QRadioButton and QCheckBox classes. Push buttons are implemented in the QPushButton and QToolButton classes; these also provide toggle behavior if required.

Any button can display a label containing text and an icon. setText() sets the text; setIcon() sets the icon. If a button is disabled, its label is changed to give the button a "disabled" appearance.

If the button is a text button with a string containing an ampersand ('&'), QAbstractButton automatically creates a shortcut key. For example:

QPushButton *button = new QPushButton(tr("Ro&ck && Roll"), this);

The Alt+C shortcut is assigned to the button, i.e., when the user presses Alt+C the button will call animateClick(). See the QShortcut documentation for details (to display an actual ampersand, use '&&').

You can also set a custom shortcut key using the setShortcut() function. This is useful mostly for buttons that do not have any text, because they have no automatic shortcut.

button->setIcon(QIcon(":/images/print.png"));
button->setShortcut(tr("Alt+F7"));

All of the buttons provided by Qt (QPushButton, QToolButton, QCheckBox, and QRadioButton) can display both text and icons.

A button can be made the default button in a dialog are provided by QPushButton::setDefault() and QPushButton::setAutoDefault().

QAbstractButton provides most of the states used for buttons:

The difference between isDown() and isChecked() is as follows. When the user clicks a toggle button to check it, the button is first pressed then released into the checked state. When the user clicks it again (to uncheck it), the button moves first to the pressed state, then to the unchecked state (isChecked() and isDown() are both false).

QAbstractButton provides four signals:

  1. pressed() is emitted when the left mouse button is pressed while the mouse cursor is inside the button.

  2. released() is emitted when the left mouse button is released.

  3. clicked() is emitted when the button is first pressed and then released, when the shortcut key is typed, or when click() or animateClick() is called.

  4. toggled() is emitted when the state of a toggle button changes.

To subclass QAbstractButton, you must reimplement at least paintEvent() to draw the button's outline and its text or pixmap. It is generally advisable to reimplement sizeHint() as well, and sometimes hitButton() (to determine whether a button press is within the button). For buttons with more than two states (like tri-state buttons), you will also have to reimplement checkStateSet() and nextCheckState().

See also
QButtonGroup

Definition at line 58 of file qabstractbutton.h.

Constructors and Destructors

◆ QAbstractButton() [1/2]

QAbstractButton::QAbstractButton ( QWidget parent = 0)
explicit

Constructs an abstract button with a parent.

Definition at line 592 of file qabstractbutton.cpp.

Referenced by QRadioButton::event(), QCheckBox::event(), QPushButtonPrivate::hitButton(), QToolButton::QToolButton(), and setIconSize().

593  : QWidget(*new QAbstractButtonPrivate, parent, 0)
594 {
596  d->init();
597 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
QWidget(QWidget *parent=0, Qt::WindowFlags f=0)
Constructs a widget which is a child of parent, with widget flags set to f.
Definition: qwidget.cpp:1189

◆ ~QAbstractButton()

QAbstractButton::~QAbstractButton ( )

Destroys the button.

Definition at line 602 of file qabstractbutton.cpp.

603 {
604 #ifndef QT_NO_BUTTONGROUP
606  if (d->group)
607  d->group->removeButton(this);
608 #endif
609 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482

◆ QAbstractButton() [2/2]

QAbstractButton::QAbstractButton ( QAbstractButtonPrivate dd,
QWidget parent = 0 
)
protected
Warning
This function is not part of the public interface.

Definition at line 614 of file qabstractbutton.cpp.

615  : QWidget(dd, parent, 0)
616 {
618  d->init();
619 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
QWidget(QWidget *parent=0, Qt::WindowFlags f=0)
Constructs a widget which is a child of parent, with widget flags set to f.
Definition: qwidget.cpp:1189

Functions

◆ animateClick

void QAbstractButton::animateClick ( int  msec = 100)
slot

Performs an animated click: the button is pressed immediately, and released msec milliseconds later (the default is 100 ms).

Calling this function again before the button was released will reset the release timer.

All signals associated with a click are emitted as appropriate.

This function does nothing if the button is disabled.

See also
click()

Definition at line 976 of file qabstractbutton.cpp.

Referenced by QAccessibleButton::doAction(), QAccessibleTabBar::doAction(), QAccessibleTitleBar::doAction(), event(), QLabel::event(), and QMessageBox::keyPressEvent().

977 {
978  if (!isEnabled())
979  return;
981  if (d->checkable && focusPolicy() & Qt::ClickFocus)
982  setFocus();
983  setDown(true);
984  repaint(); //flush paint event before invoking potentially expensive operation
986  if (!d->animateTimer.isActive())
987  d->emitPressed();
988  d->animateTimer.start(msec, this);
989 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
Qt::FocusPolicy focusPolicy() const
bool isEnabled() const
Definition: qwidget.h:948
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761
void setFocus()
Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its paren...
Definition: qwidget.h:432
static void flush()
Flushes the platform specific event queues.

◆ autoExclusive()

bool QAbstractButton::autoExclusive ( ) const

Referenced by setAutoExclusive().

◆ autoRepeat()

bool QAbstractButton::autoRepeat ( ) const

Referenced by setAutoRepeat().

◆ autoRepeatDelay()

int QAbstractButton::autoRepeatDelay ( ) const

Referenced by setAutoRepeatDelay().

◆ autoRepeatInterval()

int QAbstractButton::autoRepeatInterval ( ) const

Referenced by setAutoRepeatInterval().

◆ changeEvent()

void QAbstractButton::changeEvent ( QEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QToolButton.

Definition at line 1320 of file qabstractbutton.cpp.

Referenced by QToolButton::changeEvent().

1321 {
1323  switch (e->type()) {
1324  case QEvent::EnabledChange:
1325  if (!isEnabled())
1326  setDown(false);
1327  break;
1328  default:
1329  d->sizeHint = QSize();
1330  break;
1331  }
1333 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
virtual void changeEvent(QEvent *)
This event handler can be reimplemented to handle state changes.
Definition: qwidget.cpp:9170
bool isEnabled() const
Definition: qwidget.h:948
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
Type type() const
Returns the event type.
Definition: qcoreevent.h:303

◆ checkStateSet()

void QAbstractButton::checkStateSet ( )
protectedvirtual

This virtual handler is called when setChecked() was called, unless it was called from within nextCheckState().

It allows subclasses to reset their intermediate button states.

See also
nextCheckState()

Reimplemented in QCheckBox.

Definition at line 1043 of file qabstractbutton.cpp.

Referenced by setChecked().

1044 {
1045 }

◆ click

void QAbstractButton::click ( )
slot

Performs a click.

All the usual signals associated with a click are emitted as appropriate. If the button is checkable, the state of the button is toggled.

This function does nothing if the button is disabled.

See also
animateClick()

Definition at line 1003 of file qabstractbutton.cpp.

Referenced by QAccessibleButton::doAction(), QMessageBox::event(), QPushButton::keyPressEvent(), QDialog::keyPressEvent(), and QAbstractButtonPrivate::moveFocus().

1004 {
1005  if (!isEnabled())
1006  return;
1008  QPointer<QAbstractButton> guard(this);
1009  d->down = true;
1010  d->emitPressed();
1011  if (guard) {
1012  d->down = false;
1013  nextCheckState();
1014  if (guard)
1015  d->emitReleased();
1016  if (guard)
1017  d->emitClicked();
1018  }
1019 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
virtual void nextCheckState()
This virtual handler is called when a button is clicked.
bool isEnabled() const
Definition: qwidget.h:948

◆ clicked

void QAbstractButton::clicked ( bool  checked = false)
signal

This signal is emitted when the button is activated (i.e.

pressed down then released while the mouse cursor is inside the button), when the shortcut key is typed, or when click() or animateClick() is called. Notably, this signal is not emitted if you call setDown(), setChecked() or toggle().

If the button is checkable, checked is true if the button is checked, or false if the button is unchecked.

See also
pressed(), released(), toggled()

Referenced by QToolButton::QToolButton().

◆ event()

bool QAbstractButton::event ( QEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QToolButton, QPushButton, QCheckBox, QCommandLinkButton, and QRadioButton.

Definition at line 1074 of file qabstractbutton.cpp.

Referenced by QRadioButton::event(), QCheckBox::event(), QPushButton::event(), QToolButton::event(), QVistaBackButton::minimumSizeHint(), and QDockWidgetTitleButton::minimumSizeHint().

1075 {
1076  // as opposed to other widgets, disabled buttons accept mouse
1077  // events. This avoids surprising click-through scenarios
1078  if (!isEnabled()) {
1079  switch(e->type()) {
1080  case QEvent::TabletPress:
1081  case QEvent::TabletRelease:
1082  case QEvent::TabletMove:
1086  case QEvent::MouseMove:
1087  case QEvent::HoverMove:
1088  case QEvent::HoverEnter:
1089  case QEvent::HoverLeave:
1090  case QEvent::ContextMenu:
1091 #ifndef QT_NO_WHEELEVENT
1092  case QEvent::Wheel:
1093 #endif
1094  return true;
1095  default:
1096  break;
1097  }
1098  }
1099 
1100 #ifndef QT_NO_SHORTCUT
1101  if (e->type() == QEvent::Shortcut) {
1103  QShortcutEvent *se = static_cast<QShortcutEvent *>(e);
1104  if (d->shortcutId != se->shortcutId())
1105  return false;
1106  if (!se->isAmbiguous()) {
1107  if (!d->animateTimer.isActive())
1108  animateClick();
1109  } else {
1110  if (focusPolicy() != Qt::NoFocus)
1113  }
1114  return true;
1115  }
1116 #endif
1117  return QWidget::event(e);
1118 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
The QShortcutEvent class provides an event which is generated when the user presses a key combination...
Definition: qevent.h:675
#define Q_D(Class)
Definition: qglobal.h:2482
Qt::FocusPolicy focusPolicy() const
bool isEnabled() const
Definition: qwidget.h:948
void setFocus()
Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its paren...
Definition: qwidget.h:432
int shortcutId()
This is an overloaded member function, provided for convenience. It differs from the above function o...
Definition: qevent.h:683
void setAttribute(Qt::WidgetAttribute, bool on=true)
Sets the attribute attribute on this widget if on is true; otherwise clears the attribute.
Definition: qwidget.cpp:11087
QWidget * window() const
Returns the window for this widget, i.e.
Definition: qwidget.cpp:4492
bool isAmbiguous()
Definition: qevent.h:685
bool event(QEvent *)
This is the main event handler; it handles event event.
Definition: qwidget.cpp:8636
Type type() const
Returns the event type.
Definition: qcoreevent.h:303
void animateClick(int msec=100)
Performs an animated click: the button is pressed immediately, and released msec milliseconds later (...

◆ focusInEvent()

void QAbstractButton::focusInEvent ( QFocusEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QPushButton.

Definition at line 1300 of file qabstractbutton.cpp.

Referenced by QPushButton::focusInEvent().

1301 {
1303 #ifdef QT_KEYPAD_NAVIGATION
1304  if (!QApplication::keypadNavigationEnabled())
1305 #endif
1306  d->fixFocusPolicy();
1308 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
virtual void focusInEvent(QFocusEvent *)
This event handler can be reimplemented in a subclass to receive keyboard focus events (focus receive...
Definition: qwidget.cpp:9431

◆ focusOutEvent()

void QAbstractButton::focusOutEvent ( QFocusEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QPushButton.

Definition at line 1311 of file qabstractbutton.cpp.

Referenced by QPushButton::focusOutEvent().

1312 {
1314  if (e->reason() != Qt::PopupFocusReason)
1315  d->down = false;
1317 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
virtual void focusOutEvent(QFocusEvent *)
This event handler can be reimplemented in a subclass to receive keyboard focus events (focus lost) f...
Definition: qwidget.cpp:9457
Qt::FocusReason reason()
Definition: qevent.cpp:1197

◆ group()

QButtonGroup * QAbstractButton::group ( ) const

Returns the group that this button belongs to.

If the button is not a member of any QButtonGroup, this function returns 0.

See also
QButtonGroup

Definition at line 955 of file qabstractbutton.cpp.

Referenced by QButtonGroup::addButton(), QAbstractButtonPrivate::queryButtonList(), and QButtonGroup::removeButton().

956 {
957  Q_D(const QAbstractButton);
958  return d->group;
959 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482

◆ hitButton()

bool QAbstractButton::hitButton ( const QPoint pos) const
protectedvirtual

Returns true if pos is inside the clickable button rectangle; otherwise returns false.

By default, the clickable area is the entire widget. Subclasses may reimplement this function to provide support for clickable areas of different shapes and sizes.

Reimplemented in QToolButton, QPushButton, QCheckBox, and QRadioButton.

Definition at line 1068 of file qabstractbutton.cpp.

Referenced by QPushButton::hitButton(), QToolButton::hitButton(), mouseMoveEvent(), mousePressEvent(), and mouseReleaseEvent().

1069 {
1070  return rect().contains(pos);
1071 }
QRect rect() const
bool contains(const QPoint &p, bool proper=false) const
Returns true if the given point is inside or on the edge of the rectangle, otherwise returns false...
Definition: qrect.cpp:1101

◆ icon()

QIcon QAbstractButton::icon ( ) const

◆ iconSize()

QSize QAbstractButton::iconSize ( ) const

◆ isCheckable()

bool QAbstractButton::isCheckable ( ) const

Definition at line 737 of file qabstractbutton.cpp.

Referenced by AccessibleFactory::create(), QAbstractButtonPrivate::fixFocusPolicy(), and nextCheckState().

738 {
739  Q_D(const QAbstractButton);
740  return d->checkable;
741 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482

◆ isChecked()

bool QAbstractButton::isChecked ( ) const

Definition at line 789 of file qabstractbutton.cpp.

Referenced by QButtonGroup::addButton(), QButtonGroupPrivate::detectCheckedButton(), QScriptDebuggerCodeFinderWidgetPrivate::findOptions(), nextCheckState(), QCommandLinkButton::paintEvent(), QDockWidgetTitleButton::paintEvent(), CloseButton::paintEvent(), and QAccessibleButton::state().

790 {
791  Q_D(const QAbstractButton);
792  return d->checked;
793 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482

◆ isDown()

bool QAbstractButton::isDown ( ) const

Definition at line 820 of file qabstractbutton.cpp.

Referenced by QToolBoxButton::initStyleOption(), QCommandLinkButton::paintEvent(), QVistaBackButton::paintEvent(), QDockWidgetTitleButton::paintEvent(), CloseButton::paintEvent(), QAccessibleButton::state(), and QAccessibleTitleBar::state().

821 {
822  Q_D(const QAbstractButton);
823  return d->down;
824 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482

◆ keyPressEvent()

void QAbstractButton::keyPressEvent ( QKeyEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QPushButton.

Definition at line 1190 of file qabstractbutton.cpp.

Referenced by QPushButton::keyPressEvent().

1191 {
1193  bool next = true;
1194  switch (e->key()) {
1195  case Qt::Key_Enter:
1196  case Qt::Key_Return:
1197  e->ignore();
1198  break;
1199  case Qt::Key_Select:
1200  case Qt::Key_Space:
1201  if (!e->isAutoRepeat()) {
1202  setDown(true);
1203  repaint(); //flush paint event before invoking potentially expensive operation
1205  d->emitPressed();
1206  }
1207  break;
1208  case Qt::Key_Up:
1209  case Qt::Key_Left:
1210  next = false;
1211  // fall through
1212  case Qt::Key_Right:
1213  case Qt::Key_Down:
1214 #ifdef QT_KEYPAD_NAVIGATION
1215  if ((QApplication::keypadNavigationEnabled()
1216  && (e->key() == Qt::Key_Left || e->key() == Qt::Key_Right))
1217  || (!QApplication::navigationMode() == Qt::NavigationModeKeypadDirectional
1218  || (e->key() == Qt::Key_Up || e->key() == Qt::Key_Down))) {
1219  e->ignore();
1220  return;
1221  }
1222 #endif
1223  QWidget *pw;
1224  if (d->autoExclusive
1225 #ifndef QT_NO_BUTTONGROUP
1226  || d->group
1227 #endif
1228 #ifndef QT_NO_ITEMVIEWS
1229  || ((pw = parentWidget()) && qobject_cast<QAbstractItemView *>(pw->parentWidget()))
1230 #endif
1231  ) {
1232  // ### Using qobject_cast to check if the parent is a viewport of
1233  // QAbstractItemView is a crude hack, and should be revisited and
1234  // cleaned up when fixing task 194373. It's here to ensure that we
1235  // keep compatibility outside QAbstractItemView.
1236  d->moveFocus(e->key());
1237  if (hasFocus()) // nothing happend, propagate
1238  e->ignore();
1239  } else {
1240  focusNextPrevChild(next);
1241  }
1242  break;
1243  case Qt::Key_Escape:
1244  if (d->down) {
1245  setDown(false);
1246  repaint(); //flush paint event before invoking potentially expensive operation
1248  d->emitReleased();
1249  break;
1250  }
1251  // fall through
1252  default:
1253  e->ignore();
1254  }
1255 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
QWidget * parentWidget() const
Returns the parent of this widget, or 0 if it does not have any parent widget.
Definition: qwidget.h:1035
#define QT_NO_BUTTONGROUP
The QWidget class is the base class of all user interface objects.
Definition: qwidget.h:150
bool hasFocus() const
Definition: qwidget.cpp:6583
#define Q_D(Class)
Definition: qglobal.h:2482
int key() const
Returns the code of the key that was pressed or released.
Definition: qevent.h:231
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761
virtual bool focusNextPrevChild(bool next)
Finds a new widget to give the keyboard focus to, as appropriate for Tab and Shift+Tab, and returns true if it can find a new widget, or false if it can&#39;t.
Definition: qwidget.cpp:6836
bool isAutoRepeat() const
Returns true if this event comes from an auto-repeating key; returns false if it comes from an initia...
Definition: qevent.h:237
void ignore()
Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).
Definition: qcoreevent.h:310
#define QT_NO_ITEMVIEWS
static void flush()
Flushes the platform specific event queues.

◆ keyReleaseEvent()

void QAbstractButton::keyReleaseEvent ( QKeyEvent e)
protectedvirtual

Reimplemented Function

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 1258 of file qabstractbutton.cpp.

◆ mouseMoveEvent()

void QAbstractButton::mouseMoveEvent ( QMouseEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QCheckBox, and QRadioButton.

Definition at line 1167 of file qabstractbutton.cpp.

Referenced by QVistaHelper::leftMargin(), QRadioButton::mouseMoveEvent(), and QCheckBox::mouseMoveEvent().

1168 {
1170  if (!(e->buttons() & Qt::LeftButton) || !d->pressed) {
1171  e->ignore();
1172  return;
1173  }
1174 
1175  if (hitButton(e->pos()) != d->down) {
1176  setDown(!d->down);
1177  repaint(); //flush paint event before invoking potentially expensive operation
1179  if (d->down)
1180  d->emitPressed();
1181  else
1182  d->emitReleased();
1183  e->accept();
1184  } else if (!hitButton(e->pos())) {
1185  e->ignore();
1186  }
1187 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
const QPoint & pos() const
Returns the position of the mouse cursor, relative to the widget that received the event...
Definition: qevent.h:95
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761
Qt::MouseButtons buttons() const
Returns the button state when the event was generated.
Definition: qevent.h:102
void ignore()
Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).
Definition: qcoreevent.h:310
void accept()
Sets the accept flag of the event object, the equivalent of calling setAccepted(true).
Definition: qcoreevent.h:309
virtual bool hitButton(const QPoint &pos) const
Returns true if pos is inside the clickable button rectangle; otherwise returns false.
static void flush()
Flushes the platform specific event queues.

◆ mousePressEvent()

void QAbstractButton::mousePressEvent ( QMouseEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QToolButton.

Definition at line 1121 of file qabstractbutton.cpp.

Referenced by QVistaHelper::leftMargin(), and QToolButton::mousePressEvent().

1122 {
1124  if (e->button() != Qt::LeftButton) {
1125  e->ignore();
1126  return;
1127  }
1128  if (hitButton(e->pos())) {
1129  setDown(true);
1130  d->pressed = true;
1131  repaint(); //flush paint event before invoking potentially expensive operation
1133  d->emitPressed();
1134  e->accept();
1135  } else {
1136  e->ignore();
1137  }
1138 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
const QPoint & pos() const
Returns the position of the mouse cursor, relative to the widget that received the event...
Definition: qevent.h:95
Qt::MouseButton button() const
Returns the button that caused the event.
Definition: qevent.h:101
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761
void ignore()
Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).
Definition: qcoreevent.h:310
void accept()
Sets the accept flag of the event object, the equivalent of calling setAccepted(true).
Definition: qcoreevent.h:309
virtual bool hitButton(const QPoint &pos) const
Returns true if pos is inside the clickable button rectangle; otherwise returns false.
static void flush()
Flushes the platform specific event queues.

◆ mouseReleaseEvent()

void QAbstractButton::mouseReleaseEvent ( QMouseEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Reimplemented in QToolButton.

Definition at line 1141 of file qabstractbutton.cpp.

Referenced by QVistaHelper::leftMargin(), and QToolButton::mouseReleaseEvent().

1142 {
1144  d->pressed = false;
1145 
1146  if (e->button() != Qt::LeftButton) {
1147  e->ignore();
1148  return;
1149  }
1150 
1151  if (!d->down) {
1152  e->ignore();
1153  return;
1154  }
1155 
1156  if (hitButton(e->pos())) {
1157  d->repeatTimer.stop();
1158  d->click();
1159  e->accept();
1160  } else {
1161  setDown(false);
1162  e->ignore();
1163  }
1164 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
const QPoint & pos() const
Returns the position of the mouse cursor, relative to the widget that received the event...
Definition: qevent.h:95
Qt::MouseButton button() const
Returns the button that caused the event.
Definition: qevent.h:101
void ignore()
Clears the accept flag parameter of the event object, the equivalent of calling setAccepted(false).
Definition: qcoreevent.h:310
void accept()
Sets the accept flag of the event object, the equivalent of calling setAccepted(true).
Definition: qcoreevent.h:309
virtual bool hitButton(const QPoint &pos) const
Returns true if pos is inside the clickable button rectangle; otherwise returns false.

◆ nextCheckState()

void QAbstractButton::nextCheckState ( )
protectedvirtual

This virtual handler is called when a button is clicked.

The default implementation calls setChecked(!isChecked()) if the button isCheckable(). It allows subclasses to implement intermediate button states.

See also
checkStateSet()

Reimplemented in QToolButton, and QCheckBox.

Definition at line 1054 of file qabstractbutton.cpp.

Referenced by click(), QCheckBox::nextCheckState(), QToolButton::nextCheckState(), QAbstractButtonPrivate::notifyChecked(), and timerEvent().

1055 {
1056  if (isCheckable())
1057  setChecked(!isChecked());
1058 }
bool isChecked() const
bool isCheckable() const

◆ paintEvent()

void QAbstractButton::paintEvent ( QPaintEvent e)
protectedpure virtual

◆ pressed

void QAbstractButton::pressed ( )
signal

This signal is emitted when the button is pressed down.

See also
released(), clicked()

Referenced by QToolButtonPrivate::init(), and QPushButton::setMenu().

◆ released

void QAbstractButton::released ( )
signal

This signal is emitted when the button is released.

See also
pressed(), clicked(), toggled()

◆ setAutoExclusive()

void QAbstractButton::setAutoExclusive ( bool  autoExclusive)

Definition at line 934 of file qabstractbutton.cpp.

935 {
937  d->autoExclusive = autoExclusive;
938 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
bool autoExclusive() const

◆ setAutoRepeat()

void QAbstractButton::setAutoRepeat ( bool  autoRepeat)

Definition at line 842 of file qabstractbutton.cpp.

Referenced by QCalendarWidgetPrivate::createNavigationBar(), QTabBarPrivate::init(), QPrintPreviewDialogPrivate::init(), and QToolButton::QToolButton().

843 {
845  if (d->autoRepeat == autoRepeat)
846  return;
847  d->autoRepeat = autoRepeat;
848  if (d->autoRepeat && d->down)
849  d->repeatTimer.start(d->autoRepeatDelay, this);
850  else
851  d->repeatTimer.stop();
852 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
bool autoRepeat() const

◆ setAutoRepeatDelay()

void QAbstractButton::setAutoRepeatDelay ( int  autoRepeatDelay)

Definition at line 874 of file qabstractbutton.cpp.

Referenced by QPrintPreviewDialogPrivate::init().

875 {
877  d->autoRepeatDelay = autoRepeatDelay;
878 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
int autoRepeatDelay() const

◆ setAutoRepeatInterval()

void QAbstractButton::setAutoRepeatInterval ( int  autoRepeatInterval)

Definition at line 900 of file qabstractbutton.cpp.

Referenced by QPrintPreviewDialogPrivate::init().

901 {
903  d->autoRepeatInterval = autoRepeatInterval;
904 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
int autoRepeatInterval() const

◆ setCheckable()

void QAbstractButton::setCheckable ( bool  checkable)

Definition at line 727 of file qabstractbutton.cpp.

Referenced by QToolBarExtension::QToolBarExtension(), and QToolButton::setDefaultAction().

728 {
730  if (d->checkable == checkable)
731  return;
732 
733  d->checkable = checkable;
734  d->checked = false;
735 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
bool checkable
whether the button is checkable

◆ setChecked

void QAbstractButton::setChecked ( bool  checked)
slot

Definition at line 754 of file qabstractbutton.cpp.

Referenced by nextCheckState(), QCheckBox::setCheckState(), QToolButton::setDefaultAction(), QToolBarLayout::setExpanded(), QPrintDialogPrivate::setPrinter(), and toggle().

755 {
757  if (!d->checkable || d->checked == checked) {
758  if (!d->blockRefresh)
759  checkStateSet();
760  return;
761  }
762 
763  if (!checked && d->queryCheckedButton() == this) {
764  // the checked button of an exclusive or autoexclusive group cannot be unchecked
765 #ifndef QT_NO_BUTTONGROUP
766  if (d->group ? d->group->d_func()->exclusive : d->autoExclusive)
767  return;
768  if (d->group)
769  d->group->d_func()->detectCheckedButton();
770 #else
771  if (d->autoExclusive)
772  return;
773 #endif
774  }
775 
776  QPointer<QAbstractButton> guard(this);
777 
778  d->checked = checked;
779  if (!d->blockRefresh)
780  checkStateSet();
781  d->refresh();
782 
783  if (guard && checked)
784  d->notifyChecked();
785  if (guard)
787 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
virtual void checkStateSet()
This virtual handler is called when setChecked() was called, unless it was called from within nextChe...
#define Q_D(Class)
Definition: qglobal.h:2482
bool checked
whether the button is checked
#define emit
Definition: qobjectdefs.h:76
void toggled(bool checked)
This signal is emitted whenever a checkable button changes its state.

◆ setDown()

void QAbstractButton::setDown ( bool  down)

Definition at line 807 of file qabstractbutton.cpp.

Referenced by animateClick(), changeEvent(), QAccessibleToolButton::doAction(), QToolBar::event(), QPushButton::focusOutEvent(), keyPressEvent(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), and QPushButton::showMenu().

808 {
810  if (d->down == down)
811  return;
812  d->down = down;
813  d->refresh();
814  if (d->autoRepeat && d->down)
815  d->repeatTimer.start(d->autoRepeatDelay, this);
816  else
817  d->repeatTimer.stop();
818 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
bool down
whether the button is pressed down

◆ setIcon()

void QAbstractButton::setIcon ( const QIcon icon)

Definition at line 676 of file qabstractbutton.cpp.

Referenced by QDialogButtonBoxPrivate::createButton(), QPushButtonPrivate::hitButton(), QToolButton::hitButton(), QBalloonTip::QBalloonTip(), QMenuBarExtension::QMenuBarExtension(), QPushButton::QPushButton(), QScriptNewBreakpointWidget::QScriptNewBreakpointWidget(), QToolButton::QToolButton(), QToolButton::setDefaultAction(), QToolBoxPrivate::Page::setIcon(), QToolBarExtension::setOrientation(), QCalendarWidgetPrivate::updateButtonIcons(), and QDockWidgetPrivate::updateButtons().

677 {
679  d->icon = icon;
680  d->sizeHint = QSize();
681  update();
682  updateGeometry();
683 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
void updateGeometry()
Notifies the layout system that this widget has changed and may need to change geometry.
Definition: qwidget.cpp:10372
QIcon icon() const

◆ setIconSize

void QAbstractButton::setIconSize ( const QSize size)
slot

Definition at line 1425 of file qabstractbutton.cpp.

Referenced by QToolBarLayout::createItem(), and QBalloonTip::QBalloonTip().

1426 {
1428  if (d->iconSize == size)
1429  return;
1430 
1431  d->iconSize = size;
1432  d->sizeHint = QSize();
1433  updateGeometry();
1434  if (isVisible()) {
1435  update();
1436  }
1437 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
QSize size() const
bool isVisible() const
Definition: qwidget.h:1005
#define Q_D(Class)
Definition: qglobal.h:2482
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
void updateGeometry()
Notifies the layout system that this widget has changed and may need to change geometry.
Definition: qwidget.cpp:10372

◆ setShortcut()

void QAbstractButton::setShortcut ( const QKeySequence key)

Definition at line 700 of file qabstractbutton.cpp.

Referenced by QDialogButtonBoxPrivate::createButton(), and setText().

701 {
703  if (d->shortcutId != 0)
704  releaseShortcut(d->shortcutId);
705  d->shortcut = key;
706  d->shortcutId = grabShortcut(key);
707 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
void releaseShortcut(int id)
Removes the shortcut with the given id from Qt&#39;s shortcut system.
Definition: qwidget.cpp:11771
int grabShortcut(const QKeySequence &key, Qt::ShortcutContext context=Qt::WindowShortcut)
Adds a shortcut to Qt&#39;s shortcut system that watches for the given key sequence in the given context...
Definition: qwidget.cpp:11747
int key

◆ setText()

void QAbstractButton::setText ( const QString text)

Definition at line 641 of file qabstractbutton.cpp.

Referenced by QCalendarWidgetPrivate::_q_monthChanged(), QFileDialogPrivate::_q_updateOkButton(), QCalendarWidgetPrivate::_q_yearEditingFinished(), QPrintPropertiesDialog::addItemToOptions(), QWizardPrivate::ensureButton(), QRadioButton::event(), QCheckBox::event(), QPushButtonPrivate::hitButton(), QCheckBox::QCheckBox(), QCommandLinkButton::QCommandLinkButton(), QPushButton::QPushButton(), QRadioButton::QRadioButton(), QScriptNewBreakpointWidget::QScriptNewBreakpointWidget(), QToolButton::QToolButton(), QDialogButtonBoxPrivate::retranslateStrings(), QToolButton::setDefaultAction(), QFileDialog::setLabelText(), QToolBoxPrivate::Page::setText(), and QCalendarWidgetPrivate::updateNavigationBar().

642 {
644  if (d->text == text)
645  return;
646  d->text = text;
647 #ifndef QT_NO_SHORTCUT
648  QKeySequence newMnemonic = QKeySequence::mnemonic(text);
649  setShortcut(newMnemonic);
650 #endif
651  d->sizeHint = QSize();
652  update();
653  updateGeometry();
654 #ifndef QT_NO_ACCESSIBILITY
656 #endif
657 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
static void updateAccessibility(QObject *, int who, Event reason)
Notifies accessibility clients about a change in object&#39;s accessibility information.
QString text() const
void setShortcut(const QKeySequence &key)
static QKeySequence mnemonic(const QString &text)
Returns the shortcut key sequence for the mnemonic in text, or an empty key sequence if no mnemonics ...
#define Q_D(Class)
Definition: qglobal.h:2482
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883
The QKeySequence class encapsulates a key sequence as used by shortcuts.
Definition: qkeysequence.h:72
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
void updateGeometry()
Notifies the layout system that this widget has changed and may need to change geometry.
Definition: qwidget.cpp:10372

◆ shortcut()

QKeySequence QAbstractButton::shortcut ( ) const

Referenced by setShortcut().

◆ text()

QString QAbstractButton::text ( ) const

◆ timerEvent()

void QAbstractButton::timerEvent ( QTimerEvent event)
protectedvirtual

This event handler can be reimplemented in a subclass to receive timer events for the object.

QTimer provides a higher-level interface to the timer functionality, and also more general information about timers. The timer event is passed in the event parameter.

See also
startTimer(), killTimer(), event()

Reimplemented from QObject.

Reimplemented in QToolButton.

Definition at line 1278 of file qabstractbutton.cpp.

Referenced by QToolButton::timerEvent().

1279 {
1281  if (e->timerId() == d->repeatTimer.timerId()) {
1282  d->repeatTimer.start(d->autoRepeatInterval, this);
1283  if (d->down) {
1284  QPointer<QAbstractButton> guard(this);
1285  nextCheckState();
1286  if (guard)
1287  d->emitReleased();
1288  if (guard)
1289  d->emitClicked();
1290  if (guard)
1291  d->emitPressed();
1292  }
1293  } else if (e->timerId() == d->animateTimer.timerId()) {
1294  d->animateTimer.stop();
1295  d->click();
1296  }
1297 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
virtual void nextCheckState()
This virtual handler is called when a button is clicked.

◆ toggle

void QAbstractButton::toggle ( )
slot

Toggles the state of a checkable button.

See also
checked

Definition at line 1030 of file qabstractbutton.cpp.

1031 {
1033  setChecked(!d->checked);
1034 }
The QAbstractButton class is the abstract base class of button widgets, providing functionality commo...
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482

◆ toggled

void QAbstractButton::toggled ( bool  checked)
signal

This signal is emitted whenever a checkable button changes its state.

checked is true if the button is checked, or false if the button is unchecked.

This may be the result of a user action, click() slot activation, or because setChecked() was called.

The states of buttons in exclusive button groups are updated before this signal is emitted. This means that slots can act on either the "off" signal or the "on" signal emitted by the buttons in the group whose states have changed.

For example, a slot that reacts to signals emitted by newly checked buttons but which ignores signals from buttons that have been unchecked can be implemented using the following pattern:

void MyWidget::reactToToggle(bool checked)
{
if (checked) {
// Examine the new button states.
...
}
}

Button groups can be created using the QButtonGroup class, and updates to the button states monitored with the QButtonGroup::buttonClicked() signal.

See also
checked, clicked()

Referenced by setChecked().

Friends and Related Functions

◆ QButtonGroup

friend class QButtonGroup
friend

Definition at line 173 of file qabstractbutton.h.

Properties

◆ autoExclusive

bool QAbstractButton::autoExclusive
private

whether auto-exclusivity is enabled

If auto-exclusivity is enabled, checkable buttons that belong to the same parent widget behave as if they were part of the same exclusive button group. In an exclusive button group, only one button can be checked at any time; checking another button automatically unchecks the previously checked one.

The property has no effect on buttons that belong to a button group.

autoExclusive is off by default, except for radio buttons.

See also
QRadioButton

Definition at line 71 of file qabstractbutton.h.

Referenced by QAbstractButtonPrivate::queryButtonList().

◆ autoRepeat

bool QAbstractButton::autoRepeat
private

whether autoRepeat is enabled

If autoRepeat is enabled, then the pressed(), released(), and clicked() signals are emitted at regular intervals when the button is down. autoRepeat is off by default. The initial delay and the repetition interval are defined in milliseconds by autoRepeatDelay and autoRepeatInterval .

Note: If a button is pressed down by a shortcut key, then auto-repeat is enabled and timed by the system and not by this class. The pressed(), released(), and clicked() signals will be emitted like in the normal case.

Definition at line 70 of file qabstractbutton.h.

◆ autoRepeatDelay

int QAbstractButton::autoRepeatDelay
private

the initial delay of auto-repetition

Since
4.2

If autoRepeat is enabled, then autoRepeatDelay defines the initial delay in milliseconds before auto-repetition kicks in.

See also
autoRepeat, autoRepeatInterval

Definition at line 72 of file qabstractbutton.h.

◆ autoRepeatInterval

int QAbstractButton::autoRepeatInterval
private

the interval of auto-repetition

Since
4.2

If autoRepeat is enabled, then autoRepeatInterval defines the length of the auto-repetition interval in millisecons.

See also
autoRepeat, autoRepeatDelay

Definition at line 73 of file qabstractbutton.h.

◆ checkable

QAbstractButton::checkable
private

whether the button is checkable

By default, the button is not checkable.

See also
checked

Definition at line 68 of file qabstractbutton.h.

Referenced by QAbstractButtonPrivate::moveFocus(), and setCheckable().

◆ checked

QAbstractButton::checked
private

whether the button is checked

Only checkable buttons can be checked. By default, the button is unchecked.

See also
checkable

Definition at line 69 of file qabstractbutton.h.

Referenced by QAbstractButtonPrivate::moveFocus(), QAbstractButtonPrivate::queryCheckedButton(), and setChecked().

◆ down

QAbstractButton::down
private

whether the button is pressed down

If this property is true, the button is pressed down. The signals pressed() and clicked() are not emitted if you set this property to true. The default is false.

Definition at line 74 of file qabstractbutton.h.

Referenced by QPushButtonPrivate::_q_popupPressed(), QToolButtonPrivate::popupTimerDone(), and setDown().

◆ icon

QIcon QAbstractButton::icon
private

the icon shown on the button

The icon's default size is defined by the GUI style, but can be adjusted by setting the iconSize property.

Definition at line 63 of file qabstractbutton.h.

◆ iconSize

QSize QAbstractButton::iconSize
private

the icon size used for this button.

The default size is defined by the GUI style. This is a maximum size for the icons. Smaller icons will not be scaled up.

Definition at line 64 of file qabstractbutton.h.

◆ shortcut

QKeySequence QAbstractButton::shortcut
private

the mnemonic associated with the button

Definition at line 66 of file qabstractbutton.h.

Referenced by QAccessibleButton::keyBindings(), and QMessageBox::keyPressEvent().

◆ text

QString QAbstractButton::text
private

the text shown on the button

If the button has no text, the text() function will return a an empty string.

If the text contains an ampersand character ('&'), a shortcut is automatically created for it. The character that follows the '&' will be used as the shortcut key. Any previous shortcut will be overwritten, or cleared if no shortcut is defined by the text. See the QShortcut documentation for details (to display an actual ampersand, use '&&').

There is no default text.

Definition at line 62 of file qabstractbutton.h.

Referenced by QDialogButtonBoxPrivate::addButton(), QWizard::setButton(), and QAccessibleButton::text().


The documentation for this class was generated from the following files: