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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.

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

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


Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.5.0-rc1