Qt 4.8
Public Functions | Protected Functions | List of all members
QSizeGrip Class Reference

The QSizeGrip class provides a resize handle for resizing top-level windows. More...

#include <qsizegrip.h>

Inheritance diagram for QSizeGrip:
QWidget QObject QPaintDevice

Public Functions

 QSizeGrip (QWidget *parent)
 Constructs a resize corner as a child widget of the given parent. More...
 
void setVisible (bool)
 Reimplemented Function More...
 
QSize sizeHint () const
 Reimplemented Function More...
 
 ~QSizeGrip ()
 Destroys this size grip. 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
 
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...
 
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

bool event (QEvent *)
 Reimplemented Function More...
 
bool eventFilter (QObject *, QEvent *)
 Reimplemented Function More...
 
void hideEvent (QHideEvent *hideEvent)
 Reimplemented Function More...
 
void mouseMoveEvent (QMouseEvent *)
 Resizes the top-level widget containing this widget. More...
 
void mousePressEvent (QMouseEvent *)
 Receives the mouse press events for the widget, and primes the resize operation. More...
 
void mouseReleaseEvent (QMouseEvent *mouseEvent)
 Reimplemented Function More...
 
void moveEvent (QMoveEvent *moveEvent)
 Reimplemented Function More...
 
void paintEvent (QPaintEvent *)
 Paints the resize grip. More...
 
void showEvent (QShowEvent *showEvent)
 Reimplemented Function More...
 
bool winEvent (MSG *m, long *result)
 Reimplemented Function 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 changeEvent (QEvent *)
 This event handler can be reimplemented to handle state changes. 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...
 
virtual void focusInEvent (QFocusEvent *)
 This event handler can be reimplemented in a subclass to receive keyboard focus events (focus received) for the widget. 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...
 
virtual void focusOutEvent (QFocusEvent *)
 This event handler can be reimplemented in a subclass to receive keyboard focus events (focus lost) for the widget. 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 inputMethodEvent (QInputMethodEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive Input Method composition events. More...
 
virtual void keyPressEvent (QKeyEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive key press events for the widget. More...
 
virtual void keyReleaseEvent (QKeyEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive key release events for the widget. 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 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 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 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
 
virtual void timerEvent (QTimerEvent *)
 This event handler can be reimplemented in a subclass to receive timer events for the object. More...
 
- Protected Functions inherited from QPaintDevice
 QPaintDevice ()
 

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
}
 
- 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)
 
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 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...
 
- 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 QSizeGrip class provides a resize handle for resizing top-level windows.

This widget works like the standard Windows resize handle. In the X11 version this resize handle generally works differently from the one provided by the system if the X11 window manager does not support necessary modern post-ICCCM specifications.

Put this widget anywhere in a widget tree and the user can use it to resize the top-level window or any widget with the Qt::SubWindow flag set. Generally, this should be in the lower right-hand corner. Note that QStatusBar already uses this widget, so if you have a status bar (e.g., you are using QMainWindow), then you don't need to use this widget explicitly.

On some platforms the size grip automatically hides itself when the window is shown full screen or maximised.

plastique-sizegrip.png
Screenshot of a Plastique style size grip
A size grip widget at the bottom-right corner of a main window, shown in the Plastique Style Widget Gallery{Plastique widget style}.

The QSizeGrip class inherits QWidget and reimplements the QWidget::mousePressEvent() and QWidget::mouseMoveEvent() functions to feature the resize functionality, and the QWidget::paintEvent() function to render the size grip widget.

See also
QStatusBar QWidget::windowState()

Definition at line 55 of file qsizegrip.h.

Constructors and Destructors

◆ QSizeGrip()

QSizeGrip::QSizeGrip ( QWidget parent)
explicit

Constructs a resize corner as a child widget of the given parent.

Definition at line 212 of file qsizegrip.cpp.

213  : QWidget(*new QSizeGripPrivate, parent, 0)
214 {
215  Q_D(QSizeGrip);
216  d->init();
217 }
double d
Definition: qnumeric_p.h:62
The QSizeGrip class provides a resize handle for resizing top-level windows.
Definition: qsizegrip.h:55
#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

◆ ~QSizeGrip()

QSizeGrip::~QSizeGrip ( )

Destroys this size grip.

Definition at line 259 of file qsizegrip.cpp.

260 {
261 }

Functions

◆ event()

bool QSizeGrip::event ( QEvent event)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 556 of file qsizegrip.cpp.

557 {
558  return QWidget::event(event);
559 }
bool event(QEvent *)
This is the main event handler; it handles event event.
Definition: qwidget.cpp:8636

◆ eventFilter()

bool QSizeGrip::eventFilter ( QObject o,
QEvent e 
)
protectedvirtual

Reimplemented Function

Reimplemented from QObject.

Definition at line 535 of file qsizegrip.cpp.

536 {
537  Q_D(QSizeGrip);
540  || o != d->tlw) {
541  return QWidget::eventFilter(o, e);
542  }
543  Qt::WindowStates sizeGripNotVisibleState = Qt::WindowFullScreen;
544 #ifndef Q_WS_MAC
545  sizeGripNotVisibleState |= Qt::WindowMaximized;
546 #endif
547  // Don't show the size grip if the tlw is maximized or in full screen mode.
548  setVisible(!(d->tlw->windowState() & sizeGripNotVisibleState));
550  return QWidget::eventFilter(o, e);
551 }
double d
Definition: qnumeric_p.h:62
The QSizeGrip class provides a resize handle for resizing top-level windows.
Definition: qsizegrip.h:55
#define Q_D(Class)
Definition: qglobal.h:2482
bool isHidden() const
Returns true if the widget is hidden, otherwise returns false.
Definition: qwidget.h:1008
bool testAttribute(Qt::WidgetAttribute) const
Returns true if attribute attribute is set on this widget; otherwise returns false.
Definition: qwidget.h:1041
virtual bool eventFilter(QObject *, QEvent *)
Filters events if this object has been installed as an event filter for the watched object...
Definition: qobject.cpp:1375
void setVisible(bool)
Reimplemented Function
Definition: qsizegrip.cpp:529
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
Type type() const
Returns the event type.
Definition: qcoreevent.h:303

◆ hideEvent()

void QSizeGrip::hideEvent ( QHideEvent hideEvent)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 518 of file qsizegrip.cpp.

519 {
520 #ifdef Q_WS_MAC
521  d_func()->updateMacSizer(true);
522 #endif
523  QWidget::hideEvent(hideEvent);
524 }
virtual void hideEvent(QHideEvent *)
This event handler can be reimplemented in a subclass to receive widget hide events.
Definition: qwidget.cpp:9864

◆ mouseMoveEvent()

void QSizeGrip::mouseMoveEvent ( QMouseEvent event)
protectedvirtual

Resizes the top-level widget containing this widget.

The mouse move event is passed in the event parameter.

Reimplemented from QWidget.

Definition at line 413 of file qsizegrip.cpp.

414 {
415  if (e->buttons() != Qt::LeftButton) {
417  return;
418  }
419 
420  Q_D(QSizeGrip);
421  QWidget* tlw = qt_sizegrip_topLevelWidget(this);
422  if (!d->gotMousePress || tlw->testAttribute(Qt::WA_WState_ConfigPending))
423  return;
424 
425 #ifdef Q_WS_X11
426  if (tlw->isWindow() && X11->isSupportedByWM(ATOM(_NET_WM_MOVERESIZE))
427  && tlw->isTopLevel() && !(tlw->windowFlags() & Qt::X11BypassWindowManagerHint)
429  return;
430 #endif
431 #ifdef Q_WS_WIN
432  if (tlw->isWindow() && GetSystemMenu(tlw->winId(), FALSE) != 0 && internalWinId()
434  MSG msg;
435  while(PeekMessage(&msg, winId(), WM_MOUSEMOVE, WM_MOUSEMOVE, PM_REMOVE));
436  return;
437  }
438 #endif
439 
440  QPoint np(e->globalPos());
441 
442  // Don't extend beyond the available geometry; bound to dyMax and dxMax.
443  QSize ns;
444  if (d->atBottom())
445  ns.rheight() = d->r.height() + qMin(np.y() - d->p.y(), d->dyMax);
446  else
447  ns.rheight() = d->r.height() - qMax(np.y() - d->p.y(), d->dyMax);
448 
449  if (d->atLeft())
450  ns.rwidth() = d->r.width() - qMax(np.x() - d->p.x(), d->dxMax);
451  else
452  ns.rwidth() = d->r.width() + qMin(np.x() - d->p.x(), d->dxMax);
453 
454  ns = QLayout::closestAcceptableSize(tlw, ns);
455 
456  QPoint p;
457  QRect nr(p, ns);
458  if (d->atBottom()) {
459  if (d->atLeft())
460  nr.moveTopRight(d->r.topRight());
461  else
462  nr.moveTopLeft(d->r.topLeft());
463  } else {
464  if (d->atLeft())
465  nr.moveBottomRight(d->r.bottomRight());
466  else
467  nr.moveBottomLeft(d->r.bottomLeft());
468  }
469 
470  tlw->setGeometry(nr);
471 }
double d
Definition: qnumeric_p.h:62
Q_DECL_CONSTEXPR const T & qMin(const T &a, const T &b)
Definition: qglobal.h:1215
The QSizeGrip class provides a resize handle for resizing top-level windows.
Definition: qsizegrip.h:55
static QWidget * qt_sizegrip_topLevelWidget(QWidget *w)
Definition: qsizegrip.cpp:74
bool isWindow() const
Returns true if the widget is an independent window, otherwise returns false.
Definition: qwidget.h:945
The QWidget class is the base class of all user interface objects.
Definition: qwidget.h:150
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 o...
Definition: qwidget.h:1017
virtual bool hasHeightForWidth() const
Definition: qwidget.cpp:10260
#define X11
Definition: qt_x11_p.h:724
#define Q_D(Class)
Definition: qglobal.h:2482
static QSize closestAcceptableSize(const QWidget *w, const QSize &s)
Returns a size that satisfies all size constraints on widget, including heightForWidth() and that is ...
Definition: qlayout.cpp:1586
Q_DECL_CONSTEXPR const T & qMax(const T &a, const T &b)
Definition: qglobal.h:1217
#define ATOM(x)
Definition: qt_x11_p.h:723
bool testAttribute(Qt::WidgetAttribute) const
Returns true if attribute attribute is set on this widget; otherwise returns false.
Definition: qwidget.h:1041
#define FALSE
Synonym for false.
Definition: qglobal.h:1019
struct tagMSG MSG
The QPoint class defines a point in the plane using integer precision.
Definition: qpoint.h:53
int & rheight()
Returns a reference to the height.
Definition: qsize.h:144
bool isTopLevel() const
Use isWindow() instead.
Definition: qwidget.h:942
The QRect class defines a rectangle in the plane using integer precision.
Definition: qrect.h:58
WId internalWinId() const
Returns the window system identifier of the widget, or 0 if the widget is not created yet...
Definition: qwidget.h:244
friend Q_GUI_EXPORT QWidgetPrivate * qt_widget_private(QWidget *widget)
Definition: qwidget.cpp:12920
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
WId winId() const
Returns the window system identifier of the widget.
Definition: qwidget.cpp:2557
Qt::WindowFlags windowFlags() const
Window flags are a combination of a type (e.
Definition: qwidget.h:939
virtual void mouseMoveEvent(QMouseEvent *)
This event handler, for event event, can be reimplemented in a subclass to receive mouse move events ...
Definition: qwidget.cpp:9239

◆ mousePressEvent()

void QSizeGrip::mousePressEvent ( QMouseEvent event)
protectedvirtual

Receives the mouse press events for the widget, and primes the resize operation.

The mouse press event is passed in the event parameter.

Reimplemented from QWidget.

Definition at line 299 of file qsizegrip.cpp.

300 {
301  if (e->button() != Qt::LeftButton) {
303  return;
304  }
305 
306  Q_D(QSizeGrip);
307  QWidget *tlw = qt_sizegrip_topLevelWidget(this);
308  d->p = e->globalPos();
309  d->gotMousePress = true;
310  d->r = tlw->geometry();
311 
312 #ifdef Q_WS_X11
313  // Use a native X11 sizegrip for "real" top-level windows if supported.
314  if (tlw->isWindow() && X11->isSupportedByWM(ATOM(_NET_WM_MOVERESIZE))
317  XEvent xev;
318  xev.xclient.type = ClientMessage;
319  xev.xclient.message_type = ATOM(_NET_WM_MOVERESIZE);
320  xev.xclient.display = X11->display;
321  xev.xclient.window = tlw->winId();
322  xev.xclient.format = 32;
323  xev.xclient.data.l[0] = e->globalPos().x();
324  xev.xclient.data.l[1] = e->globalPos().y();
325  if (d->atBottom())
326  xev.xclient.data.l[2] = d->atLeft() ? 6 : 4; // bottomleft/bottomright
327  else
328  xev.xclient.data.l[2] = d->atLeft() ? 0 : 2; // topleft/topright
329  xev.xclient.data.l[3] = Button1;
330  xev.xclient.data.l[4] = 0;
331  XUngrabPointer(X11->display, X11->time);
332  XSendEvent(X11->display, QX11Info::appRootWindow(x11Info().screen()), False,
333  SubstructureRedirectMask | SubstructureNotifyMask, &xev);
334  return;
335  }
336 #endif // Q_WS_X11
337 #ifdef Q_WS_WIN
339  uint orientation = 0;
340  if (d->atBottom())
341  orientation = d->atLeft() ? SZ_SIZEBOTTOMLEFT : SZ_SIZEBOTTOMRIGHT;
342  else
343  orientation = d->atLeft() ? SZ_SIZETOPLEFT : SZ_SIZETOPRIGHT;
344 
345  ReleaseCapture();
346  PostMessage(tlw->winId(), WM_SYSCOMMAND, orientation, 0);
347  return;
348  }
349 #endif // Q_WS_WIN
350 
351  // Find available desktop/workspace geometry.
352  QRect availableGeometry;
353  bool hasVerticalSizeConstraint = true;
354  bool hasHorizontalSizeConstraint = true;
355  if (tlw->isWindow())
356  availableGeometry = QApplication::desktop()->availableGeometry(tlw);
357  else {
358  const QWidget *tlwParent = tlw->parentWidget();
359  // Check if tlw is inside QAbstractScrollArea/QScrollArea.
360  // If that's the case tlw->parentWidget() will return the viewport
361  // and tlw->parentWidget()->parentWidget() will return the scroll area.
362 #ifndef QT_NO_SCROLLAREA
363  QAbstractScrollArea *scrollArea = qobject_cast<QAbstractScrollArea *>(tlwParent->parentWidget());
364  if (scrollArea) {
365  hasHorizontalSizeConstraint = scrollArea->horizontalScrollBarPolicy() == Qt::ScrollBarAlwaysOff;
366  hasVerticalSizeConstraint = scrollArea->verticalScrollBarPolicy() == Qt::ScrollBarAlwaysOff;
367  }
368 #endif // QT_NO_SCROLLAREA
369  availableGeometry = tlwParent->contentsRect();
370  }
371 
372  // Find frame geometries, title bar height, and decoration sizes.
373  const QRect frameGeometry = tlw->frameGeometry();
374  const int titleBarHeight = qMax(tlw->geometry().y() - frameGeometry.y(), 0);
375  const int bottomDecoration = qMax(frameGeometry.height() - tlw->height() - titleBarHeight, 0);
376  const int leftRightDecoration = qMax((frameGeometry.width() - tlw->width()) / 2, 0);
377 
378  // Determine dyMax depending on whether the sizegrip is at the bottom
379  // of the widget or not.
380  if (d->atBottom()) {
381  if (hasVerticalSizeConstraint)
382  d->dyMax = availableGeometry.bottom() - d->r.bottom() - bottomDecoration;
383  else
384  d->dyMax = INT_MAX;
385  } else {
386  if (hasVerticalSizeConstraint)
387  d->dyMax = availableGeometry.y() - d->r.y() + titleBarHeight;
388  else
389  d->dyMax = -INT_MAX;
390  }
391 
392  // In RTL mode, the size grip is to the left; find dxMax from the desktop/workspace
393  // geometry, the size grip geometry and the width of the decoration.
394  if (d->atLeft()) {
395  if (hasHorizontalSizeConstraint)
396  d->dxMax = availableGeometry.x() - d->r.x() + leftRightDecoration;
397  else
398  d->dxMax = -INT_MAX;
399  } else {
400  if (hasHorizontalSizeConstraint)
401  d->dxMax = availableGeometry.right() - d->r.right() - leftRightDecoration;
402  else
403  d->dxMax = INT_MAX;
404  }
405 }
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
Qt::ScrollBarPolicy horizontalScrollBarPolicy
the policy for the horizontal scroll bar
The QSizeGrip class provides a resize handle for resizing top-level windows.
Definition: qsizegrip.h:55
static QWidget * qt_sizegrip_topLevelWidget(QWidget *w)
Definition: qsizegrip.cpp:74
int width
the width of the widget excluding any window frame
Definition: qwidget.h:166
QRect contentsRect() const
Returns the area inside the widget&#39;s margins.
Definition: qwidget.cpp:7544
bool isWindow() const
Returns true if the widget is an independent window, otherwise returns false.
Definition: qwidget.h:945
static Qt::HANDLE appRootWindow(int screen=-1)
Returns a handle for the applications root window on the given screen.
virtual void mousePressEvent(QMouseEvent *)
This event handler, for event event, can be reimplemented in a subclass to receive mouse press events...
Definition: qwidget.cpp:9261
The QWidget class is the base class of all user interface objects.
Definition: qwidget.h:150
QRect frameGeometry
geometry of the widget relative to its parent including any window frame
Definition: qwidget.h:159
const QX11Info & x11Info() const
Returns information about the configuration of the X display used to display the widget.
int width() const
Returns the width of the rectangle.
Definition: qrect.h:303
Qt::ScrollBarPolicy verticalScrollBarPolicy
the policy for the vertical scroll bar
The QAbstractScrollArea widget provides a scrolling area with on-demand scroll bars.
int height() const
Returns the height of the rectangle.
Definition: qrect.h:306
int bottom() const
Returns the y-coordinate of the rectangle&#39;s bottom edge.
Definition: qrect.h:249
T * qobject_cast(QObject *object)
Definition: qobject.h:375
virtual bool hasHeightForWidth() const
Definition: qwidget.cpp:10260
#define X11
Definition: qt_x11_p.h:724
#define Q_D(Class)
Definition: qglobal.h:2482
Q_DECL_CONSTEXPR const T & qMax(const T &a, const T &b)
Definition: qglobal.h:1217
union _XEvent XEvent
Definition: qwindowdefs.h:116
#define ATOM(x)
Definition: qt_x11_p.h:723
int height
the height of the widget excluding any window frame
Definition: qwidget.h:167
bool testAttribute(Qt::WidgetAttribute) const
Returns true if attribute attribute is set on this widget; otherwise returns false.
Definition: qwidget.h:1041
#define SZ_SIZETOPLEFT
Definition: qsizegrip.cpp:69
#define SZ_SIZETOPRIGHT
Definition: qsizegrip.cpp:70
unsigned int uint
Definition: qglobal.h:996
static QDesktopWidget * desktop()
Returns the desktop widget (also called the root window).
int right() const
Returns the x-coordinate of the rectangle&#39;s right edge.
Definition: qrect.h:246
#define SZ_SIZEBOTTOMRIGHT
Definition: qsizegrip.cpp:67
int y() const
Returns the y-coordinate of the rectangle&#39;s top edge.
Definition: qrect.h:255
QRect frameGeometry() const
int x() const
Returns the x-coordinate of the rectangle&#39;s left edge.
Definition: qrect.h:252
The QRect class defines a rectangle in the plane using integer precision.
Definition: qrect.h:58
friend Q_GUI_EXPORT QWidgetPrivate * qt_widget_private(QWidget *widget)
Definition: qwidget.cpp:12920
WId winId() const
Returns the window system identifier of the widget.
Definition: qwidget.cpp:2557
const QRect availableGeometry(int screen=-1) const
Qt::WindowFlags windowFlags() const
Window flags are a combination of a type (e.
Definition: qwidget.h:939
QRect geometry
the geometry of the widget relative to its parent and excluding the window frame
Definition: qwidget.h:158
#define INT_MAX
#define SZ_SIZEBOTTOMLEFT
Definition: qsizegrip.cpp:68

◆ mouseReleaseEvent()

void QSizeGrip::mouseReleaseEvent ( QMouseEvent mouseEvent)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 476 of file qsizegrip.cpp.

477 {
478  if (mouseEvent->button() == Qt::LeftButton) {
479  Q_D(QSizeGrip);
480  d->gotMousePress = false;
481  d->p = QPoint();
482  } else {
483  QWidget::mouseReleaseEvent(mouseEvent);
484  }
485 }
double d
Definition: qnumeric_p.h:62
The QSizeGrip class provides a resize handle for resizing top-level windows.
Definition: qsizegrip.h:55
virtual void mouseReleaseEvent(QMouseEvent *)
This event handler, for event event, can be reimplemented in a subclass to receive mouse release even...
Definition: qwidget.cpp:9286
#define Q_D(Class)
Definition: qglobal.h:2482
Qt::MouseButton button() const
Returns the button that caused the event.
Definition: qevent.h:101
The QPoint class defines a point in the plane using integer precision.
Definition: qpoint.h:53

◆ moveEvent()

void QSizeGrip::moveEvent ( QMoveEvent moveEvent)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 490 of file qsizegrip.cpp.

491 {
492  Q_D(QSizeGrip);
493  // We're inside a resize operation; no update necessary.
494  if (!d->p.isNull())
495  return;
496 
497  d->m_corner = d->corner();
498 #if !defined(QT_NO_CURSOR) && !defined(Q_WS_MAC)
499  setCursor(d->m_corner == Qt::TopLeftCorner || d->m_corner == Qt::BottomRightCorner
501 #endif
502 }
double d
Definition: qnumeric_p.h:62
The QSizeGrip class provides a resize handle for resizing top-level windows.
Definition: qsizegrip.h:55
#define Q_D(Class)
Definition: qglobal.h:2482
void setCursor(const QCursor &)
Definition: qwidget.cpp:5290

◆ paintEvent()

void QSizeGrip::paintEvent ( QPaintEvent event)
protectedvirtual

Paints the resize grip.

Resize grips are usually rendered as small diagonal textured lines in the lower-right corner. The paint event is passed in the event parameter.

Reimplemented from QWidget.

Definition at line 281 of file qsizegrip.cpp.

282 {
283  Q_UNUSED(event);
284  Q_D(QSizeGrip);
285  QPainter painter(this);
287  opt.init(this);
288  opt.corner = d->m_corner;
289  style()->drawControl(QStyle::CE_SizeGrip, &opt, &painter, this);
290 }
The QPainter class performs low-level painting on widgets and other paint devices.
Definition: qpainter.h:86
double d
Definition: qnumeric_p.h:62
The QSizeGrip class provides a resize handle for resizing top-level windows.
Definition: qsizegrip.h:55
void init(const QWidget *w)
Use initFrom(widget) instead.
Qt::Corner corner
The corner in which the size grip is located.
Definition: qstyleoption.h:859
#define Q_D(Class)
Definition: qglobal.h:2482
The QStyleOptionSizeGrip class is used to describe the parameter for drawing a size grip...
Definition: qstyleoption.h:853
QStyle * style() const
Definition: qwidget.cpp:2742
virtual void drawControl(ControlElement element, const QStyleOption *opt, QPainter *p, const QWidget *w=0) const =0
Draws the given element with the provided painter with the style options specified by option...
#define Q_UNUSED(x)
Indicates to the compiler that the parameter with the specified name is not used in the body of a fun...
Definition: qglobal.h:1729

◆ setVisible()

void QSizeGrip::setVisible ( bool  visible)
virtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 529 of file qsizegrip.cpp.

Referenced by eventFilter(), and QMdiSubWindowPrivate::setSizeGripVisible().

530 {
532 }
bool visible
whether the widget is visible
Definition: qwidget.h:191
virtual void setVisible(bool visible)
Definition: qwidget.cpp:7991

◆ showEvent()

void QSizeGrip::showEvent ( QShowEvent showEvent)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 507 of file qsizegrip.cpp.

508 {
509 #ifdef Q_WS_MAC
510  d_func()->updateMacSizer(false);
511 #endif
512  QWidget::showEvent(showEvent);
513 }
virtual void showEvent(QShowEvent *)
This event handler can be reimplemented in a subclass to receive widget show events which are passed ...
Definition: qwidget.cpp:9842

◆ sizeHint()

QSize QSizeGrip::sizeHint ( ) const
virtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 266 of file qsizegrip.cpp.

Referenced by QMdiSubWindowPrivate::setSizeGrip().

267 {
268  QStyleOption opt(0);
269  opt.init(this);
270  return (style()->sizeFromContents(QStyle::CT_SizeGrip, &opt, QSize(13, 13), this).
271  expandedTo(QApplication::globalStrut()));
272 }
static QSize globalStrut()
QStyle * style() const
Definition: qwidget.cpp:2742
The QStyleOption class stores the parameters used by QStyle functions.
Definition: qstyleoption.h:67
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53

◆ winEvent()

bool QSizeGrip::winEvent ( MSG m,
long *  result 
)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 563 of file qsizegrip.cpp.

564 {
565  return QWidget::winEvent(m, result);
566 }
virtual bool winEvent(MSG *message, long *result)
This special event handler can be reimplemented in a subclass to receive native Windows events which ...
Definition: qwidget.cpp:9941

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