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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.

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

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

Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.5.1