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

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

Copyright © 2008 Trolltech Trademarks
Qt 4.5.0-snapshot-20080717