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