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

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


Copyright © 2008 Nokia Corporation and/or its subsidiary(-ies) Trademarks
Qt 4.5.0-tp1