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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 QFontDatabase QNetworkInterface QStyleOptionTab
QAbstractEventDispatcher QFontDialog QNetworkProxy QStyleOptionTabBarBase
QAbstractExtensionFactory QFontInfo QNetworkProxyFactory QStyleOptionTabBarBaseV2
QAbstractExtensionManager QFontMetrics QNetworkProxyQuery QStyleOptionTabV2
QAbstractFileEngine QFontMetricsF QNetworkReply QStyleOptionTabV3
QAbstractFileEngineHandler QFormBuilder QNetworkRequest QStyleOptionTabWidgetFrame
QAbstractFileEngineIterator QFormLayout Notifier (Phonon::BackendCapabilities) QStyleOptionTitleBar
QAbstractFormBuilder QFrame QObject QStyleOptionToolBar
QAbstractGraphicsShapeItem QFSFileEngine QObjectCleanupHandler QStyleOptionToolBox
QAbstractItemDelegate QFtp ObjectDescription (Phonon) QStyleOptionToolBoxV2
QAbstractItemModel QFuture QPageSetupDialog QStyleOptionToolButton
QAbstractItemView QFutureIterator QPaintDevice QStyleOptionViewItem
QAbstractListModel QFutureSynchronizer QPaintEngine QStyleOptionViewItemV2
QAbstractMessageHandler QFutureWatcher QPaintEngineState QStyleOptionViewItemV3
QAbstractNetworkCache QGenericArgument QPainter QStyleOptionViewItemV4
QAbstractPrintDialog QGenericReturnArgument QPainterPath QStylePainter
QAbstractProxyModel QGLColormap QPainterPathStroker QStylePlugin
QAbstractScrollArea QGLContext QPaintEvent QSvgGenerator
QAbstractSlider QGLFormat QPair QSvgRenderer
QAbstractSocket QGLFramebufferObject QPalette QSvgWidget
QAbstractSpinBox QGLPixelBuffer Path (Phonon) QSyntaxHighlighter
QAbstractTableModel QGLWidget QPen QSysInfo
QAbstractTextDocumentLayout QGradient QPersistentModelIndex QSystemLocale
QAbstractUriResolver QGraphicsEllipseItem QPicture QSystemSemaphore
QAbstractXmlNodeModel QGraphicsGridLayout QPictureFormatPlugin QSystemTrayIcon
QAbstractXmlReceiver QGraphicsItem QPictureIO QTabBar
QAccessible QGraphicsItemAnimation QPixmap QTabletEvent
QAccessibleBridge QGraphicsItemGroup QPixmapCache QTableView
QAccessibleBridgePlugin QGraphicsLayout QPlainTextDocumentLayout QTableWidget
QAccessibleEvent QGraphicsLayoutItem QPlainTextEdit QTableWidgetItem
QAccessibleInterface QGraphicsLinearLayout QPlastiqueStyle QTableWidgetSelectionRange
QAccessibleObject QGraphicsLineItem QPluginLoader QTabWidget
QAccessiblePlugin QGraphicsPathItem QPoint QTcpServer
QAccessibleWidget QGraphicsPixmapItem QPointer QTcpSocket
QAction QGraphicsPolygonItem QPointF QTemporaryFile
QActionEvent QGraphicsProxyWidget QPolygon QTestEventList
QActionGroup QGraphicsRectItem QPolygonF QTextBlock
QApplication QGraphicsScene QPrintDialog QTextBlockFormat
QAssistantClient QGraphicsSceneContextMenuEvent QPrintEngine QTextBlockGroup
QAtomicInt QGraphicsSceneDragDropEvent QPrinter QTextBlockUserData
QAtomicPointer QGraphicsSceneEvent QPrinterInfo QTextBoundaryFinder
AudioOutput (Phonon) QGraphicsSceneHelpEvent QPrintPreviewDialog QTextBrowser
QAuthenticator QGraphicsSceneHoverEvent QPrintPreviewWidget QTextCharFormat
QBasicTimer QGraphicsSceneMouseEvent QProcess QTextCodec
QBitArray QGraphicsSceneMoveEvent QProgressBar QTextCodecPlugin
QBitmap QGraphicsSceneResizeEvent QProgressDialog QTextCursor
QBoxLayout QGraphicsSceneWheelEvent QProxyModel QTextDecoder
QBrush QGraphicsSimpleTextItem QPushButton QTextDocument
QBuffer QGraphicsSvgItem QQueue QTextDocumentFragment
QButtonGroup QGraphicsTextItem QRadialGradient QTextDocumentWriter
QByteArray QGraphicsView QRadioButton QTextEdit
QByteArrayMatcher QGraphicsWidget QRasterPaintEngine QTextEncoder
QCache QGridLayout QReadLocker QTextFormat
QCalendarWidget QGroupBox QReadWriteLock QTextFragment
QCDEStyle QGtkStyle QRect QTextFrame
QChar QHash QRectF QTextFrameFormat
QCheckBox QHashIterator QRegExp QTextImageFormat
QChildEvent QHBoxLayout QRegExpValidator QTextInlineObject
QCleanlooksStyle QHeaderView QRegion QTextItem
QClipboard QHelpContentItem QResizeEvent QTextLayout
QCloseEvent QHelpContentModel QResource QTextLength
QColor QHelpContentWidget QRubberBand QTextLine
QColorDialog QHelpEngine QRunnable QTextList
QColormap QHelpEngineCore QScriptable QTextListFormat
QColumnView QHelpEvent QScriptClass QTextObject
QComboBox QHelpIndexModel QScriptClassPropertyIterator QTextObjectInterface
QCommandLinkButton QHelpIndexWidget QScriptContext QTextOption
QCommonStyle QHelpSearchEngine QScriptContextInfo QTextStream
QCompleter QHelpSearchQuery QScriptEngine QTextTable
QConicalGradient QHelpSearchQueryWidget QScriptEngineAgent QTextTableCell
QContextMenuEvent QHelpSearchResultWidget QScriptEngineDebugger QTextTableCellFormat
QCoreApplication QHideEvent QScriptExtensionPlugin QTextTableFormat
QCryptographicHash QHostAddress QScriptString QThread
QCursor QHostInfo QScriptSyntaxCheckResult QThreadPool
QCustomRasterPaintDevice QHoverEvent QScriptValue QThreadStorage
QDataStream QHttp QScriptValueIterator QTime
QDataWidgetMapper QHttpHeader QScrollArea QTimeEdit
QDate QHttpRequestHeader QScrollBar QTimeLine
QDateEdit QHttpResponseHeader SeekSlider (Phonon) QTimer
QDateTime QIcon QSemaphore QTimerEvent
QDateTimeEdit QIconDragEvent QSessionManager QToolBar
QDBusAbstractAdaptor QIconEngine QSet QToolBox
QDBusAbstractInterface QIconEnginePlugin QSetIterator QToolButton
QDBusArgument QIconEnginePluginV2 QSettings QToolTip
QDBusConnection QIconEngineV2 QSharedData QTransform
QDBusConnectionInterface QImage QSharedDataPointer QTranslator
QDBusContext QImageIOHandler QSharedMemory QTreeView
QDBusError QImageIOPlugin QSharedPointer QTreeWidget
QDBusInterface QImageReader QShortcut QTreeWidgetItem
QDBusMessage QImageWriter QShortcutEvent QTreeWidgetItemIterator
QDBusObjectPath QInputContext QShowEvent QUdpSocket
QDBusPendingCall QInputContextFactory QSignalMapper QUiLoader
QDBusPendingCallWatcher QInputContextPlugin QSignalSpy QUndoCommand
QDBusPendingReply QInputDialog QSimpleXmlNodeModel QUndoGroup
QDBusReply QInputEvent QSize QUndoStack
QDBusServer QInputMethodEvent QSizeF QUndoView
QDBusSignature QIntValidator QSizeGrip UnhandledException (QtConcurrent)
QDBusVariant QIODevice QSizePolicy QUrl
QDebug 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

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


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