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

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


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