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