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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).

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

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

Copyright © 2008 Trolltech Trademarks
Qt 4.4-snapshot-20080907