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

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


Copyright © 2008 Trolltech Trademarks
Qt 4.4.0