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

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


Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.5.2