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All Qt Classes (main index)

This is a list of all Qt classes. For a list of the classes provided for compatibility with Qt3, see Qt3 Support Classes. For classes that have been deprecated, see the Obsolete Classes list.

QAbstractAnimation QFinalState QMovie QStyleOptionTab
QAbstractButton QFlag QMultiHash QStyleOptionTabBarBase
QAbstractEventDispatcher QFlags QMultiMap QStyleOptionTabBarBaseV2
QAbstractExtensionFactory QFocusEvent QMutableSetIterator QStyleOptionTabV2
QAbstractExtensionManager QFocusFrame QMutex QStyleOptionTabV3
QAbstractFileEngine QFont QMutexLocker QStyleOptionTabWidgetFrame
QAbstractFileEngineHandler QFontComboBox QNetworkAccessManager QStyleOptionTabWidgetFrameV2
QAbstractFileEngineIterator QFontDatabase QNetworkAddressEntry QStyleOptionTitleBar
QAbstractFontEngine QFontDialog QNetworkCacheMetaData QStyleOptionToolBar
QAbstractFormBuilder QFontEngineInfo QNetworkConfiguration QStyleOptionToolBox
QAbstractGraphicsShapeItem QFontEnginePlugin QNetworkConfigurationManager QStyleOptionToolBoxV2
QAbstractItemDelegate QFontInfo QNetworkCookie QStyleOptionToolButton
QAbstractItemModel QFontMetrics QNetworkCookieJar QStyleOptionViewItem
QAbstractItemView QFontMetricsF QNetworkDiskCache QStyleOptionViewItemV2
QAbstractListModel QFormBuilder QNetworkInterface QStyleOptionViewItemV3
QAbstractMessageHandler QFormLayout QNetworkProxy QStyleOptionViewItemV4
QAbstractNetworkCache QFrame QNetworkProxyFactory QStylePainter
QAbstractPrintDialog QFSFileEngine QNetworkProxyQuery QStylePlugin
QAbstractProxyModel QFtp QNetworkReply QSvgGenerator
QAbstractScrollArea QFuture QNetworkRequest QSvgRenderer
QAbstractSlider QFutureSynchronizer QNetworkSession QSvgWidget
QAbstractSocket QFutureWatcher Notifier (Phonon::BackendCapabilities) QSwipeGesture
QAbstractSpinBox QGenericArgument QObject QSymbianEvent
QAbstractState QGenericMatrix QObjectCleanupHandler QSyntaxHighlighter
QAbstractTableModel QGenericReturnArgument ObjectDescription (Phonon) QSysInfo
QAbstractTextDocumentLayout QGesture QPageSetupDialog QSystemLocale
QAbstractTransition QGestureEvent QPaintDevice QSystemSemaphore
QAbstractUriResolver QGestureRecognizer QPaintEngine QSystemTrayIcon
QAbstractVideoBuffer QGLBuffer QPaintEngineState QTabBar
QAbstractVideoSurface QGLColormap QPainter QTabletEvent
QAbstractXmlNodeModel QGLContext QPainterPath QTableView
QAbstractXmlReceiver QGLFormat QPainterPathStroker QTableWidget
QAccessible QGLFramebufferObject QPaintEvent QTableWidgetItem
QAccessibleBridge QGLFramebufferObjectFormat QPair QTableWidgetSelectionRange
QAccessibleBridgePlugin QGLPixelBuffer QPalette QTabWidget
QAccessibleEvent QGLShader QPanGesture QTapAndHoldGesture
QAccessibleInterface QGLShaderProgram QParallelAnimationGroup QTapGesture
QAccessibleObject QGLWidget Path (Phonon) QTcpServer
QAccessiblePlugin QGradient QPauseAnimation QTcpSocket
QAccessibleWidget QGraphicsAnchor QPen QTemporaryFile
QAction QGraphicsAnchorLayout QPersistentModelIndex QTestEventList
QActionEvent QGraphicsBlurEffect QPicture QTextBlock
QActionGroup QGraphicsColorizeEffect QPinchGesture QTextBlockFormat
QAnimationGroup QGraphicsDropShadowEffect QPixmap QTextBlockGroup
QApplication QGraphicsEffect QPixmapCache QTextBlockUserData
QAtomicInt QGraphicsEllipseItem QPlainTextDocumentLayout QTextBoundaryFinder
QAtomicPointer QGraphicsGridLayout QPlainTextEdit QTextBrowser
QAudioDeviceInfo QGraphicsItem QPlastiqueStyle QTextCharFormat
QAudioFormat QGraphicsItemAnimation QPluginLoader QTextCodec
QAudioInput QGraphicsItemGroup QPoint QTextCodecPlugin
QAudioOutput QGraphicsLayout QPointer QTextCursor
QAuthenticator QGraphicsLayoutItem QPointF QTextDecoder
QAxAggregated QGraphicsLinearLayout QPolygon QTextDocument
QAxBase QGraphicsLineItem QPolygonF QTextDocumentFragment
QAxBindable QGraphicsObject QPrintDialog QTextDocumentWriter
QAxFactory QGraphicsOpacityEffect QPrintEngine QTextEdit
QAxObject QGraphicsPathItem QPrinter QTextEncoder
QAxScript QGraphicsPixmapItem QPrinterInfo QTextFormat
QAxScriptEngine QGraphicsPolygonItem QPrintPreviewDialog QTextFragment
QAxScriptManager QGraphicsProxyWidget QPrintPreviewWidget QTextFrame
QAxWidget QGraphicsRectItem QProcess QTextFrameFormat
QBasicTimer QGraphicsRotation QProcessEnvironment QTextImageFormat
QBitArray QGraphicsScale QProgressBar QTextInlineObject
QBitmap QGraphicsScene QProgressDialog QTextItem
QBoxLayout QGraphicsSceneContextMenuEvent QPropertyAnimation QTextLayout
QBrush QGraphicsSceneDragDropEvent QProxyScreen QTextLength
QBuffer QGraphicsSceneEvent QProxyScreenCursor QTextLine
QButtonGroup QGraphicsSceneHelpEvent QProxyStyle QTextList
QByteArray QGraphicsSceneHoverEvent QPushButton QTextListFormat
QByteArrayMatcher QGraphicsSceneMouseEvent QTouchEventSequence (QTest) QTextObject
QCache QGraphicsSceneMoveEvent QQuaternion QTextObjectInterface
QCalendarWidget QGraphicsSceneResizeEvent QQueue QTextOption
QCDEStyle QGraphicsSceneWheelEvent QRadialGradient QTextStream
QChar QGraphicsSimpleTextItem QRadioButton QTextTable
QCheckBox QGraphicsSvgItem QRasterPaintEngine QTextTableCell
QChildEvent QGraphicsTextItem QReadLocker QTextTableCellFormat
QCleanlooksStyle QGraphicsTransform QReadWriteLock QTextTableFormat
QClipboard QGraphicsVideoItem QRect QThread
QCloseEvent QGraphicsView QRectF QThreadPool
QColor QGraphicsWebView QRegExp QThreadStorage
QColorDialog QGraphicsWidget QRegExpValidator QTileRules
QColormap QGridLayout QRegion QTime
QColumnView QGroupBox QResizeEvent QTimeEdit
QComboBox QGtkStyle QResource QTimeLine
QCommandLinkButton QHash QRubberBand QTimer
QCommonStyle QHBoxLayout QRunnable QTimerEvent
QCompleter QHeaderView QS60MainApplication QToolBar
QConicalGradient QHelpContentItem QS60MainAppUi QToolBox
QContextMenuEvent QHelpContentModel QS60MainDocument QToolButton
QContiguousCache QHelpContentWidget QS60Style QToolTip
QCopChannel QHelpEngine QScopedArrayPointer QTouchEvent
QCoreApplication QHelpEngineCore QScopedPointer QTransform
QCryptographicHash QHelpEvent QScreen QTranslator
QCursor QHelpIndexModel QScreenCursor QTreeView
QCustomRasterPaintDevice QHelpIndexWidget QScreenDriverFactory QTreeWidget
QDataStream QHelpSearchEngine QScreenDriverPlugin QTreeWidgetItem
QDataWidgetMapper QHelpSearchQuery QScriptable QTreeWidgetItemIterator
QDate QHelpSearchQueryWidget QScriptClass QUdpSocket
QDateEdit QHelpSearchResultWidget QScriptClassPropertyIterator QUiLoader
QDateTime QHideEvent QScriptContext QUndoCommand
QDateTimeEdit QHistoryState QScriptContextInfo QUndoGroup
QDBusAbstractAdaptor QHostAddress QScriptEngine QUndoStack
QDBusAbstractInterface QHostInfo QScriptEngineAgent QUndoView
QDBusArgument QHoverEvent QScriptEngineDebugger UnhandledException (QtConcurrent)
QDBusConnection QIcon QScriptExtensionPlugin QUrl
QDBusConnectionInterface QIconDragEvent QScriptString QUrlInfo
QDBusContext QIconEngine QScriptSyntaxCheckResult QUuid
QDBusError QIconEnginePlugin QScriptValue QValidator
QDBusInterface QIconEnginePluginV2 QScriptValueIterator QVariant
QDBusMessage QIconEngineV2 QScrollArea QVariantAnimation
QDBusObjectPath QImage QScrollBar QVarLengthArray
QDBusPendingCall QImageIOHandler SeekSlider (Phonon) QVBoxLayout
QDBusPendingCallWatcher QImageIOPlugin QSemaphore QVector
QDBusPendingReply QImageReader QSequentialAnimationGroup QVector2D
QDBusReply QImageWriter QSessionManager QVector3D
QDBusServer QInputContext QSet QVector4D
QDBusServiceWatcher QInputContextFactory QSettings QVideoDeviceControl
QDBusSignature QInputContextPlugin QSharedData QVideoFrame
QDBusVariant QInputDialog QSharedDataPointer QVideoOutputControl
QDebug QInputEvent QSharedMemory VideoPlayer (Phonon)
QDeclarativeComponent QInputMethodEvent QSharedPointer QVideoRendererControl
QDeclarativeContext QIntValidator QShortcut QVideoSurfaceFormat
QDeclarativeEngine QIODevice QShortcutEvent QVideoWidget
QDeclarativeError QItemDelegate QShowEvent QVideoWidgetControl
QDeclarativeExpression QItemEditorCreator QSignalMapper QVideoWindowControl
QDeclarativeExtensionPlugin QItemEditorCreatorBase QSignalSpy VolumeSlider (Phonon)
QDeclarativeImageProvider QItemEditorFactory QSignalTransition QWaitCondition
QDeclarativeItem QItemSelection QSimpleXmlNodeModel QWeakPointer
QDeclarativeListProperty QItemSelectionModel QSize QWebDatabase
QDeclarativeListReference QItemSelectionRange QSizeF QWebElement
QDeclarativeNetworkAccessManagerFactory QKbdDriverFactory QSizeGrip QWebElementCollection
QDeclarativeParserStatus QKbdDriverPlugin QSizePolicy QWebFrame
QDeclarativeProperty QKeyEvent QSlider QWebHistory
QDeclarativePropertyMap QKeyEventTransition QSocketNotifier QWebHistoryInterface
QDeclarativeScriptString QKeySequence QSortFilterProxyModel QWebHistoryItem
QDeclarativeView QLabel QSound QWebHitTestResult
QDecoration QLatin1Char QSourceLocation QWebInspector
QDecorationDefault QLatin1String QSpacerItem QWebPage
QDecorationFactory QLayout QSpinBox QWebPluginFactory
QDecorationPlugin QLayoutItem QSplashScreen QWebSecurityOrigin
QDesignerActionEditorInterface QLCDNumber QSplitter QWebSettings
QDesignerContainerExtension QLibrary QSplitterHandle QWebView
QDesignerCustomWidgetCollectionInterface QLibraryInfo QSqlDatabase QWhatsThis
QDesignerCustomWidgetInterface QLine QSqlDriver QWhatsThisClickedEvent
QDesignerDynamicPropertySheetExtension QLinearGradient QSqlDriverCreator QWheelEvent
QDesignerFormEditorInterface QLineEdit QSqlDriverCreatorBase QWidget
QDesignerFormWindowCursorInterface QLineF QSqlDriverPlugin QWidgetAction
QDesignerFormWindowInterface QLinkedList QSqlError QWidgetItem
QDesignerFormWindowManagerInterface QList QSqlField QWindowsMime
QDesignerMemberSheetExtension QListView QSqlIndex QWindowsStyle
QDesignerObjectInspectorInterface QListWidget QSqlQuery QWindowStateChangeEvent
QDesignerPropertyEditorInterface QListWidgetItem QSqlQueryModel QWindowsVistaStyle
QDesignerPropertySheetExtension QLocale QSqlRecord QWindowsXPStyle
QDesignerTaskMenuExtension QLocalServer QSqlRelation QWizard
QDesignerWidgetBoxInterface QLocalSocket QSqlRelationalDelegate QWizardPage
QDesktopServices QMacCocoaViewContainer QSqlRelationalTableModel QWriteLocker
QDesktopWidget QMacNativeWidget QSqlResult QWSCalibratedMouseHandler
QDial QMacPasteboardMime QSqlTableModel QWSClient
QDialog QMacStyle QSslCertificate QWSEmbedWidget
QDialogButtonBox QMainWindow QSslCipher QWSEvent
QDir QMap QSslConfiguration QWSGLWindowSurface
QDirectPainter QMargins QSslError QWSInputMethod
QDirIterator QMatrix4x4 QSslKey QWSKeyboardHandler
QDockWidget QMdiArea QSslSocket QWSMouseHandler
QDomAttr QMdiSubWindow QStack QWSPointerCalibrationData
QDomCDATASection QMediaContent QStackedLayout QWSScreenSaver
QDomCharacterData QMediaControl QStackedWidget QWSServer
QDomComment MediaController (Phonon) QStandardItem QWSWindow
QDomDocument MediaNode (Phonon) QStandardItemEditorCreator QX11EmbedContainer
QDomDocumentFragment QMediaObject QStandardItemModel QX11EmbedWidget
QDomDocumentType QMediaPlayer QState QX11Info
QDomElement QMediaPlayerControl QStateMachine QXmlAttributes
QDomEntity QMediaPlaylist QStaticText QXmlContentHandler
QDomEntityReference QMediaPlaylistControl QStatusBar QXmlDeclHandler
QDomImplementation QMediaPlaylistIOPlugin QStatusTipEvent QXmlDefaultHandler
QDomNamedNodeMap QMediaPlaylistNavigator QString QXmlDTDHandler
QDomNode QMediaPlaylistProvider QStringList QXmlEntityResolver
QDomNodeList QMediaPlaylistReader QStringListModel QXmlErrorHandler
QDomNotation QMediaPlaylistWriter QStringMatcher QXmlFormatter
QDomProcessingInstruction QMediaResource QStringRef QXmlInputSource
QDomText QMediaService QStyle QXmlItem
QDoubleSpinBox QMediaServiceFeaturesInterface QStyledItemDelegate QXmlLexicalHandler
QDoubleValidator QMediaServiceProvider QStyleFactory QXmlLocator
QDrag QMediaServiceProviderHint QStyleHintReturn QXmlName
QDragEnterEvent QMediaServiceProviderPlugin QStyleHintReturnMask QXmlNamePool
QDragLeaveEvent QMediaServiceSupportedDevicesInterface QStyleHintReturnVariant QXmlNamespaceSupport
QDragMoveEvent QMediaServiceSupportedFormatsInterface QStyleOption QXmlNodeModelIndex
QDropEvent MediaSource (Phonon) QStyleOptionButton QXmlParseException
QDynamicPropertyChangeEvent QMediaTimeInterval QStyleOptionComboBox QXmlQuery
QEasingCurve QMediaTimeRange QStyleOptionComplex QXmlReader
Effect (Phonon) QMenu QStyleOptionDockWidget QXmlResultItems
EffectParameter (Phonon) QMenuBar QStyleOptionFocusRect QXmlSchema
EffectWidget (Phonon) QMessageBox QStyleOptionFrame QXmlSchemaValidator
QErrorMessage QMetaClassInfo QStyleOptionFrameV2 QXmlSerializer
QEvent QMetaDataControl QStyleOptionFrameV3 QXmlSimpleReader
QEventLoop QMetaEnum QStyleOptionGraphicsItem QXmlStreamAttribute
QEventTransition QMetaMethod QStyleOptionGroupBox QXmlStreamAttributes
Exception (QtConcurrent) QMetaObject QStyleOptionHeader QXmlStreamEntityDeclaration
QExplicitlySharedDataPointer QMetaProperty QStyleOptionMenuItem QXmlStreamEntityResolver
QExtensionFactory QMetaType QStyleOptionProgressBar QXmlStreamNamespaceDeclaration
QExtensionManager QMimeData QStyleOptionProgressBarV2 QXmlStreamNotationDeclaration
QFile QModelIndex QStyleOptionQ3DockWindow QXmlStreamReader
QFileDialog QMotifStyle QStyleOptionQ3ListView QXmlStreamWriter
QFileIconProvider QMouseDriverFactory QStyleOptionQ3ListViewItem  
QFileInfo QMouseDriverPlugin QStyleOptionRubberBand
QFileOpenEvent QMouseEvent QStyleOptionSizeGrip
QFileSystemModel QMouseEventTransition QStyleOptionSlider
QFileSystemWatcher QMoveEvent QStyleOptionSpinBox

See also Qt3 Support Classes, All Qt Modules, and Obsolete Classes.


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Qt 4.7.0