 |
Qt 4.8
|
|
Qt 4.8
|
The QLabel widget provides a text or image display. More...
#include <qlabel.h>
Public Slots | |
| void | clear () |
| Clears any label contents. More... | |
| void | setMovie (QMovie *movie) |
| Sets the label contents to movie. More... | |
| void | setNum (int) |
| Sets the label contents to plain text containing the textual representation of integer num. More... | |
| void | setNum (double) |
| Sets the label contents to plain text containing the textual representation of double num. More... | |
| void | setPicture (const QPicture &) |
| Sets the label contents to picture. More... | |
| void | setPixmap (const QPixmap &) |
| void | setText (const QString &) |
 Public Slots inherited from QWidget | |
| bool | close () |
| Closes this widget. More... | |
| void | hide () |
| Hides the widget. More... | |
| void | lower () |
| Lowers the widget to the bottom of the parent widget's stack. More... | |
| void | raise () |
| Raises this widget to the top of the parent widget's stack. More... | |
| void | repaint () |
| Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the widget is hidden. More... | |
| void | setDisabled (bool) |
| Disables widget input events if disable is true; otherwise enables input events. More... | |
| void | setEnabled (bool) |
| void | setFocus () |
| Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the active window. More... | |
| void | setHidden (bool hidden) |
| Convenience function, equivalent to setVisible(!hidden). More... | |
| QT_MOC_COMPAT void | setShown (bool shown) |
| Use setVisible(shown) instead. More... | |
| void | setStyleSheet (const QString &styleSheet) |
| virtual void | setVisible (bool visible) |
| void | setWindowModified (bool) |
| void | setWindowTitle (const QString &) |
| void | show () |
| Shows the widget and its child widgets. More... | |
| void | showFullScreen () |
| Shows the widget in full-screen mode. More... | |
| void | showMaximized () |
| Shows the widget maximized. More... | |
| void | showMinimized () |
| Shows the widget minimized, as an icon. More... | |
| void | showNormal () |
| Restores the widget after it has been maximized or minimized. More... | |
| void | update () |
| Updates the widget unless updates are disabled or the widget is hidden. More... | |
| Public Slots inherited from QObject | |
| void | deleteLater () |
| Schedules this object for deletion. More... | |
Signals | |
| void | linkActivated (const QString &link) |
| This signal is emitted when the user clicks a link. More... | |
| void | linkHovered (const QString &link) |
| This signal is emitted when the user hovers over a link. More... | |
| Signals inherited from QWidget | |
| void | customContextMenuRequested (const QPoint &pos) |
| This signal is emitted when the widget's contextMenuPolicy is Qt::CustomContextMenu, and the user has requested a context menu on the widget. More... | |
| Signals inherited from QObject | |
| void | destroyed (QObject *=0) |
| This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More... | |
Public Functions | |
| Qt::Alignment | alignment () const |
| QWidget * | buddy () const |
| Returns this label's buddy, or 0 if no buddy is currently set. More... | |
| bool | hasScaledContents () const |
| bool | hasSelectedText () const |
| int | heightForWidth (int) const |
| Reimplemented Function More... | |
| int | indent () const |
| int | margin () const |
| QSize | minimumSizeHint () const |
| Reimplemented Function More... | |
| QMovie * | movie () const |
| Returns a pointer to the label's movie, or 0 if no movie has been set. More... | |
| bool | openExternalLinks () const |
| const QPicture * | picture () const |
| Returns the label's picture or 0 if the label doesn't have a picture. More... | |
| const QPixmap * | pixmap () const |
| QLabel (QWidget *parent=0, Qt::WindowFlags f=0) | |
| Constructs an empty label. More... | |
| QLabel (const QString &text, QWidget *parent=0, Qt::WindowFlags f=0) | |
| Constructs a label that displays the text, text. More... | |
| QString | selectedText () const |
| int | selectionStart () const |
| selectionStart() returns the index of the first selected character in the label or -1 if no text is selected. More... | |
| void | setAlignment (Qt::Alignment) |
| Without this function, a call to e. More... | |
| void | setBuddy (QWidget *) |
| Sets this label's buddy to buddy. More... | |
| void | setIndent (int) |
| void | setMargin (int) |
| void | setOpenExternalLinks (bool open) |
| void | setScaledContents (bool) |
| void | setSelection (int, int) |
| Selects text from position start and for length characters. More... | |
| void | setTextFormat (Qt::TextFormat) |
| void | setTextInteractionFlags (Qt::TextInteractionFlags flags) |
| void | setWordWrap (bool on) |
| QSize | sizeHint () const |
| em>Reimplemented Function More... | |
| QString | text () const |
| Qt::TextFormat | textFormat () const |
| Qt::TextInteractionFlags | textInteractionFlags () const |
| bool | wordWrap () const |
| ~QLabel () | |
| Destroys the label. More... | |
| Public Functions inherited from QFrame | |
| QRect | frameRect () const |
| Shadow | frameShadow () const |
| Shape | frameShape () const |
| int | frameStyle () const |
| Returns the frame style. More... | |
| int | frameWidth () const |
| int | lineWidth () const |
| int | midLineWidth () const |
| QFrame (QWidget *parent=0, Qt::WindowFlags f=0) | |
| Constructs a frame widget with frame style NoFrame and a 1-pixel frame width. More... | |
| void | setFrameRect (const QRect &) |
| em>Reimplemented Function More... | |
| void | setFrameShadow (Shadow) |
| void | setFrameShape (Shape) |
| void | setFrameStyle (int) |
| Sets the frame style to style. More... | |
| void | setLineWidth (int) |
| void | setMidLineWidth (int) |
| ~QFrame () | |
| Destroys the frame. 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 |
| QWidget * | childAt (int x, int y) const |
| Returns the visible child widget at the position ({x}, {y}) in the widget's coordinate system. More... | |
| QWidget * | childAt (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 |
| QWidget * | focusProxy () const |
| Returns the focus proxy, or 0 if there is no focus proxy. More... | |
| QWidget * | focusWidget () const |
| Returns the last child of this widget that setFocus had been called on. More... | |
| const QFont & | font () 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 QRect & | geometry () 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... | |
| QGraphicsEffect * | graphicsEffect () const |
| The graphicsEffect function returns a pointer to the widget's graphics effect. More... | |
| QGraphicsProxyWidget * | graphicsProxyWidget () 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 |
| QInputContext * | inputContext () |
| 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 |
| QLayout * | layout () 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 |
| int | minimumWidth () const |
| void | move (int x, int y) |
| This corresponds to move(QPoint(x, y)). More... | |
| void | move (const QPoint &) |
| QWidget * | nativeParentWidget () const |
| Returns the native parent for this widget, i. More... | |
| QWidget * | nextInFocusChain () 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) |
| QPaintEngine * | paintEngine () const |
| Returns the widget's paint engine. More... | |
| const QPalette & | palette () const |
| QWidget * | parentWidget () const |
| Returns the parent of this widget, or 0 if it does not have any parent widget. More... | |
| QPoint | pos () const |
| QWidget * | previousInFocusChain () 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 |
| QStyle * | style () 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 |
| QWidget * | topLevelWidget () 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 |
| QWidget * | window () 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... | |
| QWindowSurface * | windowSurface () 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 QX11Info & | x11Info () 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 QObjectList & | children () 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< QByteArray > | dynamicPropertyNames () 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 > | |
| 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 QMetaObject * | metaObject () 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 |
| QObject * | parent () 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... | |
| QThread * | thread () const |
| Returns the thread in which the object lives. More... | |
| QObjectUserData * | userData (uint id) const |
| virtual | ~QObject () |
| Destroys the object, deleting all its child objects. More... | |
| Public Functions inherited from QPaintDevice | |
| int | colorCount () const |
| int | depth () const |
| int | height () const |
| int | heightMM () const |
| int | logicalDpiX () const |
| int | logicalDpiY () const |
| QT_DEPRECATED int | numColors () const |
| bool | paintingActive () const |
| int | physicalDpiX () const |
| int | physicalDpiY () const |
| int | width () const |
| int | widthMM () const |
| virtual | ~QPaintDevice () |
Protected Functions | |
| void | changeEvent (QEvent *) |
| Reimplemented Function More... | |
| void | contextMenuEvent (QContextMenuEvent *ev) |
| This event handler, for event event, can be reimplemented in a subclass to receive widget context menu events. More... | |
| bool | event (QEvent *e) |
| em>Reimplemented Function More... | |
| void | focusInEvent (QFocusEvent *ev) |
| Reimplemented Function More... | |
| bool | focusNextPrevChild (bool next) |
| em>Reimplemented Function More... | |
| void | focusOutEvent (QFocusEvent *ev) |
| Reimplemented Function More... | |
| void | keyPressEvent (QKeyEvent *ev) |
| em>Reimplemented Function More... | |
| void | mouseMoveEvent (QMouseEvent *ev) |
| em>Reimplemented Function More... | |
| void | mousePressEvent (QMouseEvent *ev) |
| em>Reimplemented Function More... | |
| void | mouseReleaseEvent (QMouseEvent *ev) |
| em>Reimplemented Function More... | |
| void | paintEvent (QPaintEvent *) |
| This event handler can be reimplemented in a subclass to receive paint events passed in event. More... | |
| Protected Functions inherited from QFrame | |
| void | drawFrame (QPainter *) |
| em>Reimplemented Function More... | |
| QFrame (QFramePrivate &dd, QWidget *parent=0, Qt::WindowFlags f=0) | |
| Protected Functions inherited from QWidget | |
| virtual void | actionEvent (QActionEvent *) |
| This event handler is called with the given event whenever the widget's actions are changed. More... | |
| virtual void | closeEvent (QCloseEvent *) |
| This event handler is called with the given event when Qt receives a window close request for a top-level widget from the window system. More... | |
| void | create (WId=0, bool initializeWindow=true, bool destroyOldWindow=true) |
| Creates a new widget window if window is 0, otherwise sets the widget's window to window. More... | |
| void | destroy (bool destroyWindow=true, bool destroySubWindows=true) |
| Frees up window system resources. More... | |
| virtual void | dragEnterEvent (QDragEnterEvent *) |
| This event handler is called when a drag is in progress and the mouse enters this widget. More... | |
| virtual void | dragLeaveEvent (QDragLeaveEvent *) |
| This event handler is called when a drag is in progress and the mouse leaves this widget. More... | |
| virtual void | dragMoveEvent (QDragMoveEvent *) |
| This event handler is called if a drag is in progress, and when any of the following conditions occur: the cursor enters this widget, the cursor moves within this widget, or a modifier key is pressed on the keyboard while this widget has the focus. More... | |
| virtual void | dropEvent (QDropEvent *) |
| This event handler is called when the drag is dropped on this widget. More... | |
| virtual void | enabledChange (bool) |
| virtual void | enterEvent (QEvent *) |
| This event handler can be reimplemented in a subclass to receive widget enter events which are passed in the event parameter. More... | |
| bool | focusNextChild () |
| Finds a new widget to give the keyboard focus to, as appropriate for Tab, and returns true if it can find a new widget, or false if it can't. More... | |
| 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 | showEvent (QShowEvent *) |
| This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter. More... | |
| virtual void | styleChange (QStyle &) |
| virtual void | tabletEvent (QTabletEvent *) |
| This event handler, for event event, can be reimplemented in a subclass to receive tablet events for the widget. More... | |
| virtual void | wheelEvent (QWheelEvent *) |
| This event handler, for event event, can be reimplemented in a subclass to receive wheel events for the widget. More... | |
| virtual void | windowActivationChange (bool) |
| virtual bool | winEvent (MSG *message, long *result) |
| This special event handler can be reimplemented in a subclass to receive native Windows events which are passed in the message parameter. More... | |
| virtual bool | x11Event (XEvent *) |
| This special event handler can be reimplemented in a subclass to receive native X11 events passed in the event parameter. More... | |
| Protected Functions inherited from QObject | |
| virtual void | childEvent (QChildEvent *) |
| This event handler can be reimplemented in a subclass to receive child events. More... | |
| virtual void | connectNotify (const char *signal) |
| This virtual function is called when something has been connected to signal in this object. More... | |
| virtual void | customEvent (QEvent *) |
| This event handler can be reimplemented in a subclass to receive custom events. More... | |
| virtual void | disconnectNotify (const char *signal) |
| This virtual function is called when something has been disconnected from signal in this object. More... | |
| QObject (QObjectPrivate &dd, QObject *parent=0) | |
| int | receivers (const char *signal) const |
| Returns the number of receivers connected to the signal. More... | |
| QObject * | sender () const |
| Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 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 | |
| Qt::Alignment | alignment |
| the alignment of the label's contents More... | |
| bool | hasSelectedText |
| whether there is any text selected More... | |
| int | indent |
| the label's text indent in pixels More... | |
| int | margin |
| the width of the margin More... | |
| bool | openExternalLinks |
| Specifies whether QLabel should automatically open links using QDesktopServices::openUrl() instead of emitting the linkActivated() signal. More... | |
| QPixmap | pixmap |
| the label's pixmap More... | |
| bool | scaledContents |
| whether the label will scale its contents to fill all available space. More... | |
| QString | selectedText |
| the selected text More... | |
| QString | text |
| the label's text More... | |
| Qt::TextFormat | textFormat |
| the label's text format More... | |
| Qt::TextInteractionFlags | textInteractionFlags |
| Specifies how the label should interact with user input if it displays text. More... | |
| bool | wordWrap |
| the label's word-wrapping policy More... | |
Friends | |
| class | QBalloonTip |
| class | QMessageBoxPrivate |
| class | QTipLabel |
Additional Inherited Members | |
| Public Types inherited from QFrame | |
| enum | Shadow { Plain = 0x0010, Raised = 0x0020, Sunken = 0x0030 } |
| This enum type defines the types of shadow that are used to give a 3D effect to frames. More... | |
| enum | Shape { NoFrame = 0, Box = 0x0001, Panel = 0x0002, WinPanel = 0x0003, HLine = 0x0004, VLine = 0x0005, StyledPanel = 0x0006 } |
| This enum type defines the shapes of frame available. More... | |
| enum | StyleMask { Shadow_Mask = 0x00f0, Shape_Mask = 0x000f } |
| This enum defines two constants that can be used to extract the two components of frameStyle(): More... | |
| Public Types inherited from QWidget | |
| enum | RenderFlag { DrawWindowBackground = 0x1, DrawChildren = 0x2, IgnoreMask = 0x4 } |
| This enum describes how to render the widget when calling QWidget::render(). More... | |
| Public Types inherited from QPaintDevice | |
| enum | PaintDeviceMetric { PdmWidth = 1, PdmHeight, PdmWidthMM, PdmHeightMM, PdmNumColors, PdmDepth, PdmDpiX, PdmDpiY, PdmPhysicalDpiX, PdmPhysicalDpiY } |
| Static Public Functions inherited from QWidget | |
| static QWidget * | find (WId) |
| Returns a pointer to the widget with window identifer/handle id. More... | |
| static QWidget * | keyboardGrabber () |
| Returns the widget that is currently grabbing the keyboard input. More... | |
| static QWidget * | mouseGrabber () |
| 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 QWSDisplay * | qwsDisplay () |
| 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< QObjectData > | d_ptr |
| Protected Variables inherited from QPaintDevice | |
| ushort | painters |
| Static Protected Variables inherited from QObject | |
| static const QMetaObject | staticQtMetaObject |
| Related Functions inherited from QWidget | |
| QWidgetList | |
| WId | |
| Platform dependent window identifier. More... | |
| Related Functions inherited from QObject | |
| T | qFindChildqFindChildren (const QObject *obj, const QString &name)() |
| QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QString &name)() |
| QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QRegExp ®Exp)() |
| T * | qobject_cast (QObject *object) |
| QObjectList | |
| void * | qt_find_obj_child (QObject *parent, const char *type, const QString &name) |
| Returns a pointer to the object named name that inherits type and with a given parent. More... | |
| Related Functions inherited from QPaintDevice | |
| const Q_GUI_EXPORT QX11Info * | qt_x11Info (const QPaintDevice *pd) |
| Returns the QX11Info structure for the pd paint device. More... | |
The QLabel widget provides a text or image display.
QLabel is used for displaying text or an image. No user interaction functionality is provided. The visual appearance of the label can be configured in various ways, and it can be used for specifying a focus mnemonic key for another widget.
A QLabel can contain any of the following content types:
| Content | Setting |
| Plain text | Pass a QString to setText(). |
| Rich text | Pass a QString that contains rich text to setText(). |
| A pixmap | Pass a QPixmap to setPixmap(). |
| A movie | Pass a QMovie to setMovie(). |
| A number | Pass an int or a double to setNum(), which converts the number to plain text. |
| Nothing | The same as an empty plain text. This is the default. Set by clear(). |
When the content is changed using any of these functions, any previous content is cleared.
By default, labels display left-aligned, vertically-centered text and images, where any tabs in the text to be displayed are automatically expanded. However, the look of a QLabel can be adjusted and fine-tuned in several ways.
The positioning of the content within the QLabel widget area can be tuned with setAlignment() and setIndent(). Text content can also wrap lines along word boundaries with setWordWrap(). For example, this code sets up a sunken panel with a two-line text in the bottom right corner (both lines being flush with the right side of the label):
The properties and functions QLabel inherits from QFrame can also be used to specify the widget frame to be used for any given label.
A QLabel is often used as a label for an interactive widget. For this use QLabel provides a useful mechanism for adding an mnemonic (see QKeySequence) that will set the keyboard focus to the other widget (called the QLabel's "buddy"). For example:
In this example, keyboard focus is transferred to the label's buddy (the QLineEdit) when the user presses Alt+P. If the buddy was a button (inheriting from QAbstractButton), triggering the mnemonic would emulate a button click.
Screenshot of a Macintosh style label | A label shown in the Macintosh Style Widget Gallery{Macintosh widget style}. |
Screenshot of a Plastique style label | A label shown in the Plastique Style Widget Gallery{Plastique widget style}. |
Screenshot of a Windows XP style label | A label shown in the Windows XP Style Widget Gallery{Windows XP widget style}. |
|
explicit |
Constructs an empty label.
The parent and widget flag f, arguments are passed to the QFrame constructor.
Definition at line 179 of file qlabel.cpp.
Referenced by QLabel().
Constructs a label that displays the text, text.
The parent and widget flag f, arguments are passed to the QFrame constructor.
Definition at line 194 of file qlabel.cpp.
| QLabel::~QLabel | ( | ) |
| Qt::Alignment QLabel::alignment | ( | ) | const |
Referenced by setAlignment().
| QWidget * QLabel::buddy | ( | ) | const |
Returns this label's buddy, or 0 if no buddy is currently set.
Definition at line 1319 of file qlabel.cpp.
Referenced by buddyString(), QAccessibleDisplay::navigate(), QLabel(), QAccessibleDisplay::relationTo(), and setBuddy().
|
protectedvirtual |
Reimplemented Function
Reimplemented from QFrame.
Definition at line 1513 of file qlabel.cpp.
|
slot |
|
protectedvirtual |
This event handler, for event event, can be reimplemented in a subclass to receive widget context menu events.
The handler is called when the widget's contextMenuPolicy is Qt::DefaultContextMenu.
The default implementation ignores the context event. See the QContextMenuEvent documentation for more details.
Reimplemented from QWidget.
Reimplemented in QmlJSDebugger::ToolBarColorBox.
Definition at line 1010 of file qlabel.cpp.
|
protectedvirtual |
|
protectedvirtual |
Reimplemented Function
Reimplemented from QWidget.
Definition at line 1034 of file qlabel.cpp.
|
protectedvirtual |
|
protectedvirtual |
Reimplemented Function
em>Reimplemented Function
Reimplemented from QWidget.
Definition at line 1047 of file qlabel.cpp.
| bool QLabel::hasScaledContents | ( | ) | const |
Definition at line 1543 of file qlabel.cpp.
| bool QLabel::hasSelectedText | ( | ) | const |
Referenced by setSelection().
|
virtual |
Reimplemented Function
Reimplemented from QWidget.
Definition at line 765 of file qlabel.cpp.
Referenced by QBalloonTip::QBalloonTip(), and QWizardHeader::setup().
| int QLabel::indent | ( | ) | const |
Referenced by QLabelPrivate::documentRect(), QLabelPrivate::init(), setIndent(), and QLabelPrivate::sizeForWidth().
|
protectedvirtual |
|
signal |
This signal is emitted when the user clicks a link.
The URL referred to by the anchor is passed in link.
Referenced by QLabelPrivate::ensureTextControl().
|
signal |
This signal is emitted when the user hovers over a link.
The URL referred to by the anchor is passed in link.
Referenced by QLabelPrivate::ensureTextControl().
| int QLabel::margin | ( | ) | const |
Referenced by QLabelPrivate::documentRect(), QLabelPrivate::init(), setIndent(), setMargin(), and QLabelPrivate::sizeForWidth().
|
virtual |
Reimplemented Function
em>Reimplemented Function
Reimplemented from QWidget.
Definition at line 958 of file qlabel.cpp.
|
protectedvirtual |
em>Reimplemented Function
Reimplemented from QWidget.
Reimplemented in QmlJSDebugger::ToolBarColorBox.
Definition at line 994 of file qlabel.cpp.
Referenced by QTipLabel::mouseMoveEvent().
|
protectedvirtual |
em>Reimplemented Function
Reimplemented from QWidget.
Reimplemented in QmlJSDebugger::ToolBarColorBox.
Definition at line 986 of file qlabel.cpp.
|
protectedvirtual |
| QMovie * QLabel::movie | ( | ) | const |
Returns a pointer to the label's movie, or 0 if no movie has been set.
Definition at line 1468 of file qlabel.cpp.
Referenced by QLabelPrivate::_q_movieUpdated(), QLabelPrivate::clearContents(), QLabelPrivate::init(), QAccessibleDisplay::role(), setMovie(), and QLabelPrivate::sizeForWidth().
| bool QLabel::openExternalLinks | ( | ) | const |
Referenced by QLabelPrivate::ensureTextControl(), heightForWidth(), and QLabelPrivate::init().
|
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:
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,
Reimplemented from QFrame.
Definition at line 1123 of file qlabel.cpp.
Referenced by QTipLabel::paintEvent().
| const QPicture * QLabel::picture | ( | ) | const |
Returns the label's picture or 0 if the label doesn't have a picture.
Definition at line 163 of file qlabel.cpp.
Referenced by QLabelPrivate::clearContents(), QLabelPrivate::init(), QAccessibleDisplay::role(), and QLabelPrivate::sizeForWidth().
| const QPixmap* QLabel::pixmap | ( | ) | const |
Referenced by QLabelPrivate::clearContents(), QLabelPrivate::init(), setPixmap(), and QLabelPrivate::sizeForWidth().
| QString QLabel::selectedText | ( | ) | const |
Referenced by setSelection().
| int QLabel::selectionStart | ( | ) | const |
selectionStart() returns the index of the first selected character in the label or -1 if no text is selected.
Note: The textInteractionFlags set on the label need to include either TextSelectableByMouse or TextSelectableByKeyboard.
Definition at line 937 of file qlabel.cpp.
| void QLabel::setAlignment | ( | Qt::Alignment | alignment | ) |
Without this function, a call to e.
g. setAlignment(Qt::AlignTop) results in the QT3_SUPPORT function setAlignment(int) being called, rather than setAlignment(Qt::Alignment).
Definition at line 532 of file qlabel.cpp.
Referenced by QProgressDialogPrivate::init(), QBalloonTip::QBalloonTip(), QColorShower::QColorShower(), QTipLabel::QTipLabel(), QWizardHeader::QWizardHeader(), QMessageBox::setInformativeText(), and QCoreFuriCuri::timerEvent().
| void QLabel::setBuddy | ( | QWidget * | buddy | ) |
Sets this label's buddy to buddy.
When the user presses the shortcut key indicated by this label, the keyboard focus is transferred to the label's buddy widget.
The buddy mechanism is only available for QLabels that contain text in which one character is prefixed with an ampersand, '&'. This character is set as the shortcut key. See the QKeySequence::mnemonic() documentation for details (to display an actual ampersand, use '&&').
In a dialog, you might create two data entry widgets and a label for each, and set up the geometry layout so each label is just to the left of its data entry widget (its "buddy"), for example:
With the code above, the focus jumps to the Name field when the user presses Alt+N, and to the Phone field when the user presses Alt+P.
To unset a previously set buddy, call this function with buddy set to 0.
Definition at line 1297 of file qlabel.cpp.
Referenced by QInputDialogPrivate::ensureLayout(), QFormLayout::insertRow(), QColorShower::QColorShower(), and QLabel().
| void QLabel::setIndent | ( | int | indent | ) |
Definition at line 620 of file qlabel.cpp.
Referenced by QTipLabel::QTipLabel(), QWizardPrivate::recreateLayout(), and QMessageBox::setInformativeText().
| void QLabel::setMargin | ( | int | margin | ) |
Definition at line 654 of file qlabel.cpp.
Referenced by QBalloonTip::QBalloonTip(), and QTipLabel::QTipLabel().
|
slot |
Sets the label contents to movie.
Any previous content is cleared. The label does NOT take ownership of the movie.
The buddy shortcut, if any, is disabled.
Definition at line 1385 of file qlabel.cpp.
|
slot |
Sets the label contents to plain text containing the textual representation of integer num.
Any previous content is cleared. Does nothing if the integer's string representation is the same as the current contents of the label.
The buddy shortcut, if any, is disabled.
Definition at line 490 of file qlabel.cpp.
|
slot |
Sets the label contents to plain text containing the textual representation of double num.
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
Any previous content is cleared. Does nothing if the double's string representation is the same as the current contents of the label.
The buddy shortcut, if any, is disabled.
Definition at line 513 of file qlabel.cpp.
| void QLabel::setOpenExternalLinks | ( | bool | open | ) |
|
slot |
Sets the label contents to picture.
Any previous content is cleared.
The buddy shortcut, if any, is disabled.
Definition at line 469 of file qlabel.cpp.
|
slot |
Definition at line 439 of file qlabel.cpp.
Referenced by QBalloonTip::QBalloonTip(), QmlJSDebugger::ToolBarColorBox::setColor(), QWizardHeader::setup(), and QCoreFuriCuri::timerEvent().
| void QLabel::setScaledContents | ( | bool | enable | ) |
Definition at line 1549 of file qlabel.cpp.
Referenced by QmlJSDebugger::ToolBarColorBox::ToolBarColorBox().
| void QLabel::setSelection | ( | int | start, |
| int | length | ||
| ) |
Selects text from position start and for length characters.
Note: The textInteractionFlags set on the label need to include either TextSelectableByMouse or TextSelectableByKeyboard.
Definition at line 860 of file qlabel.cpp.
|
slot |
Definition at line 366 of file qlabel.cpp.
Referenced by QBalloonTip::QBalloonTip(), QLabel(), QColorShower::retranslateStrings(), QTipLabel::reuseTip(), setNum(), setTextFormat(), QWizardHeader::setup(), and QWizardPrivate::updateLayout().
| void QLabel::setTextFormat | ( | Qt::TextFormat | format | ) |
Definition at line 1497 of file qlabel.cpp.
Referenced by QBalloonTip::QBalloonTip(), QWizardHeader::setup(), and QWizardPrivate::updateLayout().
| void QLabel::setTextInteractionFlags | ( | Qt::TextInteractionFlags | flags | ) |
Definition at line 820 of file qlabel.cpp.
Referenced by QMessageBox::setInformativeText().
| void QLabel::setWordWrap | ( | bool | on | ) |
Definition at line 579 of file qlabel.cpp.
Referenced by QBalloonTip::QBalloonTip(), QWizardHeader::QWizardHeader(), QWizardPrivate::recreateLayout(), QTipLabel::reuseTip(), and QMessageBox::setInformativeText().
|
virtual |
em>Reimplemented Function
Reimplemented from QFrame.
Definition at line 947 of file qlabel.cpp.
Referenced by QBalloonTip::QBalloonTip(), QTipLabel::reuseTip(), and QWizardHeader::setup().
| QString QLabel::text | ( | ) | const |
Referenced by QLabel(), QTipLabel::restartExpireTimer(), setText(), QToolTip::text(), and QTipLabel::tipChanged().
| Qt::TextFormat QLabel::textFormat | ( | ) | const |
Referenced by movie().
| Qt::TextInteractionFlags QLabel::textInteractionFlags | ( | ) | const |
| bool QLabel::wordWrap | ( | ) | const |
Referenced by setWordWrap().
|
friend |
|
friend |
|
private |
|
private |
whether there is any text selected
hasSelectedText() returns true if some or all of the text has been selected by the user; otherwise returns false.
By default, this property is false.
Note: The textInteractionFlags set on the label need to include either TextSelectableByMouse or TextSelectableByKeyboard.
|
private |
the label's text indent in pixels
If a label displays text, the indent applies to the left edge if alignment() is Qt::AlignLeft, to the right edge if alignment() is Qt::AlignRight, to the top edge if alignment() is Qt::AlignTop, and to to the bottom edge if alignment() is Qt::AlignBottom.
If indent is negative, or if no indent has been set, the label computes the effective indent as follows: If frameWidth() is 0, the effective indent becomes 0. If frameWidth() is greater than 0, the effective indent becomes half the width of the "x" character of the widget's current font().
By default, the indent is -1, meaning that an effective indent is calculating in the manner described above.
|
private |
|
private |
Specifies whether QLabel should automatically open links using QDesktopServices::openUrl() instead of emitting the linkActivated() signal.
Note: The textInteractionFlags set on the label need to include either LinksAccessibleByMouse or LinksAccessibleByKeyboard.
The default value is false.
|
private |
the label's pixmap
If no pixmap has been set this will return 0.
Setting the pixmap clears any previous content. The buddy shortcut, if any, is disabled.
Definition at line 60 of file qlabel.h.
Referenced by QAccessibleDisplay::imagePosition(), QAccessibleDisplay::imageSize(), and QAccessibleDisplay::role().
|
private |
|
private |
the selected text
If there is no selected text this property's value is an empty string.
By default, this property contains an empty string.
Note: The textInteractionFlags set on the label need to include either TextSelectableByMouse or TextSelectableByKeyboard.
|
private |
the label's text
If no text has been set this will return an empty string. Setting the text clears any previous content.
The text will be interpreted either as plain text or as rich text, depending on the text format setting; see setTextFormat(). The default setting is Qt::AutoText; i.e. QLabel will try to auto-detect the format of the text set.
If a buddy has been set, the buddy mnemonic key is updated from the new text.
Note that QLabel is well-suited to display small rich text documents, such as small documents that get their document specific settings (font, text color, link color) from the label's palette and font properties. For large documents, use QTextEdit in read-only mode instead. QTextEdit can also provide a scroll bar when necessary.
Definition at line 58 of file qlabel.h.
Referenced by buddyString(), and QAccessibleDisplay::text().
|
private |
the label's text format
See the Qt::TextFormat enum for an explanation of the possible options.
The default format is Qt::AutoText.
Definition at line 59 of file qlabel.h.
Referenced by QAccessibleDisplay::text().
|
private |
Specifies how the label should interact with user input if it displays text.
If the flags contain Qt::LinksAccessibleByKeyboard the focus policy is also automatically set to Qt::StrongFocus. If Qt::TextSelectableByKeyboard is set then the focus policy is set to Qt::ClickFocus.
The default value is Qt::LinksAccessibleByMouse.
|
private |