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

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


Copyright © 2008 Trolltech Trademarks
Qt 4.4.1