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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 QNetworkCookie QStyleOptionSizeGrip
QAbstractEventDispatcher QFontInfo QNetworkCookieJar QStyleOptionSlider
QAbstractExtensionFactory QFontMetrics QNetworkDiskCache QStyleOptionSpinBox
QAbstractExtensionManager QFontMetricsF QNetworkInterface QStyleOptionTab
QAbstractFileEngine QFormBuilder QNetworkProxy QStyleOptionTabBarBase
QAbstractFileEngineHandler QFormLayout QNetworkProxyFactory QStyleOptionTabBarBaseV2
QAbstractFileEngineIterator QFrame QNetworkProxyQuery QStyleOptionTabV2
QAbstractFormBuilder QFSFileEngine QNetworkReply QStyleOptionTabV3
QAbstractGraphicsShapeItem QFtp QNetworkRequest QStyleOptionTabWidgetFrame
QAbstractItemDelegate QFuture Notifier (Phonon::BackendCapabilities) QStyleOptionTitleBar
QAbstractItemModel QFutureIterator QObject QStyleOptionToolBar
QAbstractItemView QFutureSynchronizer QObjectCleanupHandler QStyleOptionToolBox
QAbstractListModel QFutureWatcher ObjectDescription (Phonon) QStyleOptionToolBoxV2
QAbstractMessageHandler QGenericArgument QPageSetupDialog QStyleOptionToolButton
QAbstractNetworkCache QGenericReturnArgument QPaintDevice QStyleOptionViewItem
QAbstractPrintDialog QGLColormap QPaintEngine QStyleOptionViewItemV2
QAbstractProxyModel QGLContext QPaintEngineState QStyleOptionViewItemV3
QAbstractScrollArea QGLFormat QPainter QStyleOptionViewItemV4
QAbstractSlider QGLFramebufferObject QPainterPath QStylePainter
QAbstractSocket QGLPixelBuffer QPainterPathStroker QStylePlugin
QAbstractSpinBox QGLWidget QPaintEvent QSvgGenerator
QAbstractTableModel QGradient QPair QSvgRenderer
QAbstractTextDocumentLayout QGraphicsEllipseItem QPalette QSvgWidget
QAbstractUriResolver QGraphicsGridLayout Path (Phonon) QSyntaxHighlighter
QAbstractXmlNodeModel QGraphicsItem QPen QSysInfo
QAbstractXmlReceiver QGraphicsItemAnimation QPersistentModelIndex QSystemLocale
QAccessible QGraphicsItemGroup QPicture QSystemSemaphore
QAccessibleBridge QGraphicsLayout QPictureFormatPlugin QSystemTrayIcon
QAccessibleBridgePlugin QGraphicsLayoutItem QPictureIO QTabBar
QAccessibleEvent QGraphicsLinearLayout QPixmap QTabletEvent
QAccessibleInterface QGraphicsLineItem QPixmapCache 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 QMacCocoaViewContainer QSslCipher QWidget
QDomElement QMacNativeWidget QSslConfiguration QWidgetAction
QDomEntity QMacPasteboardMime QSslError QWidgetItem
QDomEntityReference QMacStyle QSslKey QWindowsStyle
QDomImplementation QMainWindow QSslSocket QWindowStateChangeEvent
QDomNamedNodeMap QMap QStack QWindowsVistaStyle
QDomNode QMapIterator QStackedLayout QWindowsXPStyle
QDomNodeList QMatrix QStackedWidget QWizard
QDomNotation QMdiArea QStandardItem QWizardPage
QDomProcessingInstruction QMdiSubWindow QStandardItemEditorCreator QWorkspace
QDomText MediaController (Phonon) QStandardItemModel QWriteLocker
QDoubleSpinBox MediaNode (Phonon) QStatusBar QXmlAttributes
QDoubleValidator MediaObject (Phonon) QStatusTipEvent QXmlContentHandler
QDrag MediaSource (Phonon) QString QXmlDeclHandler
QDragEnterEvent QMenu QStringList QXmlDefaultHandler
QDragLeaveEvent QMenuBar QStringListModel QXmlDTDHandler
QDragMoveEvent QMessageBox QStringMatcher QXmlEntityResolver
QDropEvent QMetaClassInfo QStringRef QXmlErrorHandler
QDynamicPropertyChangeEvent QMetaEnum QStyle QXmlFormatter
Effect (Phonon) QMetaMethod QStyledItemDelegate QXmlInputSource
EffectParameter (Phonon) QMetaObject QStyleFactory QXmlItem
EffectWidget (Phonon) QMetaProperty QStyleHintReturn QXmlLexicalHandler
QErrorMessage QMetaType QStyleHintReturnMask QXmlLocator
QEvent QMimeData QStyleHintReturnVariant QXmlName
QEventLoop QMimeSource QStyleOption QXmlNamePool
Exception (QtConcurrent) QModelIndex QStyleOptionButton QXmlNamespaceSupport
QExplicitlySharedDataPointer QMotifStyle QStyleOptionComboBox QXmlNodeModelIndex
QExtensionFactory QMouseEvent QStyleOptionComplex QXmlParseException
QExtensionManager QMoveEvent QStyleOptionDockWidget QXmlQuery
QFile QMovie QStyleOptionFocusRect QXmlReader
QFileDialog QMultiHash QStyleOptionFrame QXmlResultItems
QFileIconProvider QMultiMap QStyleOptionFrameV2 QXmlSerializer
QFileInfo QMutableHashIterator QStyleOptionFrameV3 QXmlSimpleReader
QFileOpenEvent QMutableLinkedListIterator QStyleOptionGraphicsItem QXmlStreamAttribute
QFileSystemModel QMutableListIterator QStyleOptionGroupBox QXmlStreamAttributes
QFileSystemWatcher QMutableMapIterator QStyleOptionHeader QXmlStreamEntityDeclaration
QFlag QMutableSetIterator QStyleOptionMenuItem QXmlStreamEntityResolver
QFlags QMutableVectorIterator QStyleOptionProgressBar QXmlStreamNamespaceDeclaration
QFocusEvent QMutex QStyleOptionProgressBarV2 QXmlStreamNotationDeclaration
QFocusFrame QMutexLocker QStyleOptionQ3DockWindow QXmlStreamReader
QFont QNetworkAccessManager QStyleOptionQ3ListView QXmlStreamWriter
QFontComboBox QNetworkAddressEntry QStyleOptionQ3ListViewItem
QFontDatabase QNetworkCacheMetaData 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