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

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