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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).

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

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


Copyright © 2008 Trolltech Trademarks
Qt 4.4.0-beta1