Qt 4.8
Public Functions | Static Public Variables | Protected Functions | Properties | List of all members
QWhatsThat Class Reference
Inheritance diagram for QWhatsThat:
QWidget QObject QPaintDevice

Public Functions

 QWhatsThat (const QString &txt, QWidget *parent, QWidget *showTextFor)
 
 ~QWhatsThat ()
 
- 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 ()
 

Static Public Variables

static QWhatsThatinstance = 0
 
- Static Public Variables inherited from QObject
static const QMetaObject staticMetaObject
 This variable stores the meta-object for the class. More...
 

Protected Functions

void keyPressEvent (QKeyEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive key press events for the widget. More...
 
void mouseMoveEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse move events for the widget. More...
 
void mousePressEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse press events for the widget. More...
 
void mouseReleaseEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse release events for the widget. More...
 
void paintEvent (QPaintEvent *)
 This event handler can be reimplemented in a subclass to receive paint events passed in event. More...
 
void showEvent (QShowEvent *e)
 This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter. 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...
 
bool event (QEvent *)
 This is the main event handler; it handles event event. 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 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 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 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 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
 
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 ()
 

Properties

QString anchor
 
QPixmap background
 
QTextDocumentdoc
 
bool pressed
 
QString text
 
QPointer< QWidgetwidget
 

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)
 
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 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 ()
 
- 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

Definition at line 151 of file qwhatsthis.cpp.

Constructors and Destructors

◆ QWhatsThat()

QWhatsThat::QWhatsThat ( const QString txt,
QWidget parent,
QWidget showTextFor 
)

Definition at line 185 of file qwhatsthis.cpp.

186  : QWidget(parent, Qt::Popup),
187  widget(showTextFor), pressed(false), text(txt)
188 {
189  delete instance;
190  instance = this;
193  if (parent)
194  setPalette(parent->palette());
195  setMouseTracking(true);
197 #ifndef QT_NO_CURSOR
199 #endif
200  QRect r;
201  doc = 0;
202  ensurePolished(); // Ensures style sheet font before size calc
203  if (Qt::mightBeRichText(text)) {
204  doc = new QTextDocument();
205  doc->setUndoRedoEnabled(false);
207 #ifdef QT_NO_TEXTHTMLPARSER
209 #else
210  doc->setHtml(text);
211 #endif
212  doc->setUndoRedoEnabled(false);
213  doc->adjustSize();
214  r.setTop(0);
215  r.setLeft(0);
216  r.setSize(doc->size().toSize());
217  }
218  else
219  {
220  int sw = QApplication::desktop()->width() / 3;
221  if (sw < 200)
222  sw = 200;
223  else if (sw > 300)
224  sw = 300;
225 
226  r = fontMetrics().boundingRect(0, 0, sw, 1000,
229  text);
230  }
231 #if defined(Q_WS_WIN)
234  {
235  BOOL shadow;
236  SystemParametersInfo(SPI_GETDROPSHADOW, 0, &shadow, 0);
237  shadowWidth = shadow ? 0 : 6;
238  }
239 #endif
240  resize(r.width() + 2*hMargin + shadowWidth, r.height() + 2*vMargin + shadowWidth);
241 }
static const int vMargin
Definition: qwhatsthis.cpp:182
QPalette palette
the widget&#39;s palette
Definition: qwidget.h:180
void ensurePolished() const
Ensures that the widget has been polished by QStyle (i.e., has a proper font and palette).
Definition: qwidget.cpp:10024
QSize toSize() const
Returns an integer based copy of this size.
Definition: qsize.h:355
void adjustSize()
Adjusts the document to a reasonable size.
Q_GUI_EXPORT bool mightBeRichText(const QString &)
Returns true if the string text is likely to be rich text; otherwise returns false.
int width() const
Returns the width of the rectangle.
Definition: qrect.h:303
QString text
Definition: qwhatsthis.cpp:172
#define SPI_GETDROPSHADOW
Definition: qwhatsthis.cpp:65
int height() const
Returns the height of the rectangle.
Definition: qrect.h:306
static const WinVersion WindowsVersion
the version of the Windows operating system on which the application is run (Windows only) ...
Definition: qglobal.h:1613
static QFont font()
Returns the default application font.
QRect boundingRect(QChar) const
Returns the rectangle that is covered by ink if character ch were to be drawn at the origin of the co...
void setPlainText(const QString &text)
Replaces the entire contents of the document with the given plain text.
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
int width() const
void setTop(int pos)
Sets the top edge of the rectangle to the given y coordinate.
Definition: qrect.h:261
QFontMetrics fontMetrics() const
Returns the font metrics for the widget&#39;s current font.
Definition: qwidget.h:984
void setSize(const QSize &s)
Sets the size of the rectangle to the given size.
Definition: qrect.h:448
static QWhatsThat * instance
Definition: qwhatsthis.cpp:159
QSizeF size
Returns the actual size of the document.
void setCursor(const QCursor &)
Definition: qwidget.cpp:5290
void setHtml(const QString &html)
Replaces the entire contents of the document with the given HTML-formatted text in the html string...
static const int hMargin
Definition: qwhatsthis.cpp:183
void setMouseTracking(bool enable)
Definition: qwidget.h:990
static QDesktopWidget * desktop()
Returns the desktop widget (also called the root window).
void setDefaultFont(const QFont &font)
Sets the default font to use in the document layout.
static int shadowWidth
Definition: qwhatsthis.cpp:181
void resize(int w, int h)
This corresponds to resize(QSize(w, h)).
Definition: qwidget.h:1014
void setLeft(int pos)
Sets the left edge of the rectangle to the given x coordinate.
Definition: qrect.h:258
QTextDocument * doc
Definition: qwhatsthis.cpp:173
void setUndoRedoEnabled(bool enable)
QPointer< QWidget > widget
Definition: qwhatsthis.cpp:170
The QRect class defines a rectangle in the plane using integer precision.
Definition: qrect.h:58
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
The QTextDocument class holds formatted text that can be viewed and edited using a QTextEdit...
void setPalette(const QPalette &)
Use the single-argument overload instead.
Definition: qwidget.cpp:4858
void setFocusPolicy(Qt::FocusPolicy policy)
Definition: qwidget.cpp:7631

◆ ~QWhatsThat()

QWhatsThat::~QWhatsThat ( )

Definition at line 243 of file qwhatsthis.cpp.

244 {
245  instance = 0;
246  if (doc)
247  delete doc;
248 }
static QWhatsThat * instance
Definition: qwhatsthis.cpp:159
QTextDocument * doc
Definition: qwhatsthis.cpp:173

Functions

◆ keyPressEvent()

void QWhatsThat::keyPressEvent ( QKeyEvent event)
protectedvirtual

This event handler, for event event, can be reimplemented in a subclass to receive key press events for the widget.

A widget must call setFocusPolicy() to accept focus initially and have focus in order to receive a key press event.

If you reimplement this handler, it is very important that you call the base class implementation if you do not act upon the key.

The default implementation closes popup widgets if the user presses Esc. Otherwise the event is ignored, so that the widget's parent can interpret it.

Note that QKeyEvent starts with isAccepted() == true, so you do not need to call QKeyEvent::accept() - just do not call the base class implementation if you act upon the key.

See also
keyReleaseEvent(), setFocusPolicy(), focusInEvent(), focusOutEvent(), event(), QKeyEvent, {Tetrix Example}

Reimplemented from QWidget.

Definition at line 301 of file qwhatsthis.cpp.

302 {
303  close();
304 }
bool close()
Closes this widget.
Definition: qwidget.cpp:8305

◆ mouseMoveEvent()

void QWhatsThat::mouseMoveEvent ( QMouseEvent event)
protectedvirtual

This event handler, for event event, can be reimplemented in a subclass to receive mouse move events for the widget.

If mouse tracking is switched off, mouse move events only occur if a mouse button is pressed while the mouse is being moved. If mouse tracking is switched on, mouse move events occur even if no mouse button is pressed.

QMouseEvent::pos() reports the position of the mouse cursor, relative to this widget. For press and release events, the position is usually the same as the position of the last mouse move event, but it might be different if the user's hand shakes. This is a feature of the underlying window system, not Qt.

If you want to show a tooltip immediately, while the mouse is moving (e.g., to get the mouse coordinates with QMouseEvent::pos() and show them as a tooltip), you must first enable mouse tracking as described above. Then, to ensure that the tooltip is updated immediately, you must call QToolTip::showText() instead of setToolTip() in your implementation of mouseMoveEvent().

See also
setMouseTracking(), mousePressEvent(), mouseReleaseEvent(), mouseDoubleClickEvent(), event(), QMouseEvent, {Scribble Example}

Reimplemented from QWidget.

Definition at line 286 of file qwhatsthis.cpp.

287 {
288 #ifdef QT_NO_CURSOR
289  Q_UNUSED(e);
290 #else
291  if (!doc)
292  return;
294  if (!a.isEmpty())
296  else
298 #endif
299 }
static const int vMargin
Definition: qwhatsthis.cpp:182
long ASN1_INTEGER_get ASN1_INTEGER * a
The QString class provides a Unicode character string.
Definition: qstring.h:83
QString anchorAt(const QPointF &pos) const
Returns the reference of the anchor the given position, or an empty string if no anchor exists at tha...
bool isEmpty() const
Returns true if the string has no characters; otherwise returns false.
Definition: qstring.h:704
void setCursor(const QCursor &)
Definition: qwidget.cpp:5290
static const int hMargin
Definition: qwhatsthis.cpp:183
The QPoint class defines a point in the plane using integer precision.
Definition: qpoint.h:53
QAbstractTextDocumentLayout * documentLayout() const
Returns the document layout for this document.
QTextDocument * doc
Definition: qwhatsthis.cpp:173
#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

◆ mousePressEvent()

void QWhatsThat::mousePressEvent ( QMouseEvent event)
protectedvirtual

This event handler, for event event, can be reimplemented in a subclass to receive mouse press events for the widget.

If you create new widgets in the mousePressEvent() the mouseReleaseEvent() may not end up where you expect, depending on the underlying window system (or X11 window manager), the widgets' location and maybe more.

The default implementation implements the closing of popup widgets when you click outside the window. For other widget types it does nothing.

See also
mouseReleaseEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), event(), QMouseEvent, {Scribble Example}

Reimplemented from QWidget.

Definition at line 256 of file qwhatsthis.cpp.

257 {
258  pressed = true;
259  if (e->button() == Qt::LeftButton && rect().contains(e->pos())) {
260  if (doc)
261  anchor = doc->documentLayout()->anchorAt(e->pos() - QPoint(hMargin, vMargin));
262  return;
263  }
264  close();
265 }
static const int vMargin
Definition: qwhatsthis.cpp:182
QString anchor
Definition: qwhatsthis.cpp:174
QString anchorAt(const QPointF &pos) const
Returns the reference of the anchor the given position, or an empty string if no anchor exists at tha...
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
static const int hMargin
Definition: qwhatsthis.cpp:183
The QPoint class defines a point in the plane using integer precision.
Definition: qpoint.h:53
QAbstractTextDocumentLayout * documentLayout() const
Returns the document layout for this document.
QTextDocument * doc
Definition: qwhatsthis.cpp:173
bool close()
Closes this widget.
Definition: qwidget.cpp:8305

◆ mouseReleaseEvent()

void QWhatsThat::mouseReleaseEvent ( QMouseEvent event)
protectedvirtual

This event handler, for event event, can be reimplemented in a subclass to receive mouse release events for the widget.

See also
mousePressEvent(), mouseDoubleClickEvent(), mouseMoveEvent(), event(), QMouseEvent, {Scribble Example}

Reimplemented from QWidget.

Definition at line 267 of file qwhatsthis.cpp.

268 {
269  if (!pressed)
270  return;
271  if (widget && e->button() == Qt::LeftButton && doc && rect().contains(e->pos())) {
273  QString href;
274  if (anchor == a)
275  href = a;
276  anchor.clear();
277  if (!href.isEmpty()) {
278  QWhatsThisClickedEvent e(href);
280  return;
281  }
282  }
283  close();
284 }
static const int vMargin
Definition: qwhatsthis.cpp:182
QString anchor
Definition: qwhatsthis.cpp:174
long ASN1_INTEGER_get ASN1_INTEGER * a
The QString class provides a Unicode character string.
Definition: qstring.h:83
QString anchorAt(const QPointF &pos) const
Returns the reference of the anchor the given position, or an empty string if no anchor exists at tha...
bool isEmpty() const
Returns true if the string has no characters; otherwise returns false.
Definition: qstring.h:704
static bool sendEvent(QObject *receiver, QEvent *event)
Sends event event directly to receiver receiver, using the notify() function.
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
static const int hMargin
Definition: qwhatsthis.cpp:183
void clear()
Clears the contents of the string and makes it empty.
Definition: qstring.h:723
The QWhatsThisClickedEvent class provides an event that can be used to handle hyperlinks in a "What&#39;s...
Definition: qevent.h:619
The QPoint class defines a point in the plane using integer precision.
Definition: qpoint.h:53
QAbstractTextDocumentLayout * documentLayout() const
Returns the document layout for this document.
QTextDocument * doc
Definition: qwhatsthis.cpp:173
QPointer< QWidget > widget
Definition: qwhatsthis.cpp:170
bool close()
Closes this widget.
Definition: qwidget.cpp:8305

◆ paintEvent()

void QWhatsThat::paintEvent ( QPaintEvent event)
protectedvirtual

This event handler can be reimplemented in a subclass to receive paint events passed in event.

A paint event is a request to repaint all or part of a widget. It can happen for one of the following reasons:

  • repaint() or update() was invoked,
  • the widget was obscured and has now been uncovered, or
  • many other reasons.

Many widgets can simply repaint their entire surface when asked to, but some slow widgets need to optimize by painting only the requested region: QPaintEvent::region(). This speed optimization does not change the result, as painting is clipped to that region during event processing. QListView and QTableView do this, for example.

Qt also tries to speed up painting by merging multiple paint events into one. When update() is called several times or the window system sends several paint events, Qt merges these events into one event with a larger region (see QRegion::united()). The repaint() function does not permit this optimization, so we suggest using update() whenever possible.

When the paint event occurs, the update region has normally been erased, so you are painting on the widget's background.

The background can be set using setBackgroundRole() and setPalette().

Since Qt 4.0, QWidget automatically double-buffers its painting, so there is no need to write double-buffering code in paintEvent() to avoid flicker.

Note for the X11 platform: It is possible to toggle global double buffering by calling qt_x11_set_global_double_buffer(). For example,

Note
Generally, you should refrain from calling update() or repaint() inside a paintEvent(). For example, calling update() or repaint() on children inside a paintevent() results in undefined behavior; the child may or may not get a paint event.
Warning
If you are using a custom paint engine without Qt's backingstore, Qt::WA_PaintOnScreen must be set. Otherwise, QWidget::paintEngine() will never be called; the backingstore will be used instead.
See also
event(), repaint(), update(), QPainter, QPixmap, QPaintEvent, {Analog Clock Example}

Reimplemented from QWidget.

Definition at line 306 of file qwhatsthis.cpp.

307 {
308  bool drawShadow = true;
309 #if defined(Q_WS_WIN)
312  {
313  BOOL shadow;
314  SystemParametersInfo(SPI_GETDROPSHADOW, 0, &shadow, 0);
315  drawShadow = !shadow;
316  }
317 #elif defined(Q_WS_MAC) || defined(Q_WS_QWS)
318  drawShadow = false; // never draw it on OS X or QWS, as we get it for free
319 #endif
320 
321  QRect r = rect();
322  r.adjust(0, 0, -1, -1);
323  if (drawShadow)
324  r.adjust(0, 0, -shadowWidth, -shadowWidth);
325  QPainter p(this);
326  p.drawPixmap(0, 0, background);
327  p.setPen(QPen(palette().toolTipText(), 0));
328  p.setBrush(palette().toolTipBase());
329  p.drawRect(r);
330  int w = r.width();
331  int h = r.height();
332  p.setPen(palette().brush(QPalette::Dark).color());
333  p.drawRect(1, 1, w-2, h-2);
334  if (drawShadow) {
335  p.setPen(palette().shadow().color());
336  p.drawPoint(w + 5, 6);
337  p.drawLine(w + 3, 6, w + 5, 8);
338  p.drawLine(w + 1, 6, w + 5, 10);
339  int i;
340  for(i=7; i < h; i += 2)
341  p.drawLine(w, i, w + 5, i + 5);
342  for(i = w - i + h; i > 6; i -= 2)
343  p.drawLine(i, h, i + 5, h + 5);
344  for(; i > 0 ; i -= 2)
345  p.drawLine(6, h + 6 - i, i + 5, h + 5);
346  }
347  r.adjust(0, 0, 1, 1);
348  p.setPen(palette().toolTipText().color());
350 
351  if (doc) {
352  p.translate(r.x(), r.y());
353  QRect rect = r;
354  rect.translate(-r.x(), -r.y());
355  p.setClipRect(rect);
357  context.palette.setBrush(QPalette::Text, context.palette.toolTipText());
358  doc->documentLayout()->draw(&p, context);
359  }
360  else
361  {
363  }
364 }
The QPainter class performs low-level painting on widgets and other paint devices.
Definition: qpainter.h:86
static const int vMargin
Definition: qwhatsthis.cpp:182
QPixmap background
Definition: qwhatsthis.cpp:175
int width() const
Returns the width of the rectangle.
Definition: qrect.h:303
QString text
Definition: qwhatsthis.cpp:172
#define SPI_GETDROPSHADOW
Definition: qwhatsthis.cpp:65
int height() const
Returns the height of the rectangle.
Definition: qrect.h:306
static const WinVersion WindowsVersion
the version of the Windows operating system on which the application is run (Windows only) ...
Definition: qglobal.h:1613
QPalette palette
the default color that is used for the text, when no color is specified.
The QPen class defines how a QPainter should draw lines and outlines of shapes.
Definition: qpen.h:64
void setBrush(ColorRole cr, const QBrush &brush)
Sets the brush for the given color role to the specified brush for all groups in the palette...
Definition: qpalette.h:206
void adjust(int x1, int y1, int x2, int y2)
Adds dx1, dy1, dx2 and dy2 respectively to the existing coordinates of the rectangle.
Definition: qrect.h:434
const QPalette & palette() const
QRect rect() const
static const int hMargin
Definition: qwhatsthis.cpp:183
static int shadowWidth
Definition: qwhatsthis.cpp:181
int y() const
Returns the y-coordinate of the rectangle&#39;s top edge.
Definition: qrect.h:255
int x() const
Returns the x-coordinate of the rectangle&#39;s left edge.
Definition: qrect.h:252
QAbstractTextDocumentLayout * documentLayout() const
Returns the document layout for this document.
QTextDocument * doc
Definition: qwhatsthis.cpp:173
The QAbstractTextDocumentLayout::PaintContext class is a convenience class defining the parameters us...
The QRect class defines a rectangle in the plane using integer precision.
Definition: qrect.h:58
const QBrush & toolTipText() const
Returns the tool tip text brush of the current color group.
Definition: qpalette.h:133
void translate(int dx, int dy)
Moves the rectangle dx along the x axis and dy along the y axis, relative to the current position...
Definition: qrect.h:312
virtual void draw(QPainter *painter, const PaintContext &context)=0
Draws the layout with the given painter using the given context.

◆ showEvent()

void QWhatsThat::showEvent ( QShowEvent event)
protectedvirtual

This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter.

Non-spontaneous show events are sent to widgets immediately before they are shown. The spontaneous show events of windows are delivered afterwards.

Note: A widget receives spontaneous show and hide events when its mapping status is changed by the window system, e.g. a spontaneous hide event when the user minimizes the window, and a spontaneous show event when the window is restored again. After receiving a spontaneous hide event, a widget is still considered visible in the sense of isVisible().

See also
visible, event(), QShowEvent

Reimplemented from QWidget.

Definition at line 250 of file qwhatsthis.cpp.

251 {
253  x(), y(), width(), height());
254 }
int y() const
QPixmap background
Definition: qwhatsthis.cpp:175
int height() const
int width() const
static QDesktopWidget * desktop()
Returns the desktop widget (also called the root window).
int x() const
WId internalWinId() const
Returns the window system identifier of the widget, or 0 if the widget is not created yet...
Definition: qwidget.h:244
static QPixmap grabWindow(WId, int x=0, int y=0, int w=-1, int h=-1)
Creates and returns a pixmap constructed by grabbing the contents of the given window restricted by Q...

Properties

◆ anchor

QString QWhatsThat::anchor
private

Definition at line 174 of file qwhatsthis.cpp.

Referenced by mousePressEvent(), and mouseReleaseEvent().

◆ background

QPixmap QWhatsThat::background
private

Definition at line 175 of file qwhatsthis.cpp.

Referenced by paintEvent(), and showEvent().

◆ doc

QTextDocument* QWhatsThat::doc
private

◆ instance

QWhatsThat * QWhatsThat::instance = 0
static

Definition at line 159 of file qwhatsthis.cpp.

Referenced by QWhatsThat(), and ~QWhatsThat().

◆ pressed

bool QWhatsThat::pressed
private

Definition at line 171 of file qwhatsthis.cpp.

Referenced by mousePressEvent(), and mouseReleaseEvent().

◆ text

QString QWhatsThat::text
private

Definition at line 172 of file qwhatsthis.cpp.

Referenced by paintEvent(), and QWhatsThat().

◆ widget

QPointer<QWidget> QWhatsThat::widget
private

Definition at line 170 of file qwhatsthis.cpp.

Referenced by mouseReleaseEvent().


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