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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 and the Qt 4.3 Class Chart (PDF).

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

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


Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.5.0-beta1