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

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


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Qt 4.6.0