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

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