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Qt's Classes

This is a list of all Qt classes excluding the Qt 3 compatibility classes. For a shorter list that only includes the most frequently used classes, see Qt's Main Classes and the Qt 4.3 Class Chart (PDF).

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

See also Qt 3 Compatibility Classes and Qt's Modules.

Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.4.3