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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.

QAbstractButton QDomComment QLatin1String QScreen QTableWidgetItem
QAbstractEventDispatcher QDomDocument QLayout QScreenDriverFactory QTableWidgetSelectionRange
QAbstractExtensionFactory QDomDocumentFragment QLayoutItem QScreenDriverPlugin QTabWidget
QAbstractExtensionManager QDomDocumentType QLCDNumber QScrollArea QTcpServer
QAbstractFileEngine QDomElement QLibrary QScrollBar QTcpSocket
QAbstractFileEngineHandler QDomEntity QLibraryInfo QSemaphore QTemporaryFile
QAbstractFormBuilder QDomEntityReference QLine QSessionManager QTestEventList
QAbstractItemDelegate QDomImplementation QLinearGradient QSet QTextBlock
QAbstractItemModel QDomNamedNodeMap QLineEdit QSetIterator QTextBlockFormat
QAbstractItemView QDomNode QLineF QSettings QTextBlockGroup
QAbstractListModel QDomNodeList QLinkedList QSharedData QTextBlockUserData
QAbstractPrintDialog QDomNotation QLinkedListIterator QSharedDataPointer QTextBrowser
QAbstractProxyModel QDomProcessingInstruction QList QShortcut QTextCharFormat
QAbstractScrollArea QDomText QListIterator QShortcutEvent QTextCodec
QAbstractSlider QDoubleSpinBox QListView QShowEvent QTextCodecPlugin
QAbstractSocket QDoubleValidator QListWidget QSignalMapper QTextCursor
QAbstractSpinBox QDrag QListWidgetItem QSignalSpy QTextDecoder
QAbstractTableModel QDragEnterEvent QLocale QSize QTextDocument
QAbstractTextDocumentLayout QDragLeaveEvent QMacMime QSizeF QTextDocumentFragment
QAccessible QDragMoveEvent QMacStyle QSizeGrip QTextEdit
QAccessibleBridge QDropEvent QMainWindow QSizePolicy QTextEncoder
QAccessibleBridgePlugin QErrorMessage QMap QSlider QTextFormat
QAccessibleEvent QEvent QMapIterator QSocketNotifier QTextFragment
QAccessibleInterface QEventLoop QMappingProxyModel QSortingProxyModel QTextFrame
QAccessibleObject QExtensionFactory QMatrix QSound QTextFrameFormat
QAccessiblePlugin QExtensionManager QMenu QSpacerItem QTextImageFormat
QAccessibleWidget QFile QMenuBar QSpinBox QTextInlineObject
QAction QFileDialog QMessageBox QSplashScreen QTextLayout
QActionEvent QFileIconProvider QMetaClassInfo QSplitter QTextLength
QActionGroup QFileInfo QMetaEnum QSplitterHandle QTextLine
QApplication QFileOpenEvent QMetaMethod QSqlDatabase QTextList
QAssistantClient QFilteringProxyModel QMetaObject QSqlDriver QTextListFormat
QAxAggregated QFlag QMetaProperty QSqlDriverCreator QTextObject
QAxBase QFlags QMetaType QSqlDriverCreatorBase QTextOption
QAxBindable QFocusEvent QMimeData QSqlDriverPlugin QTextStream
QAxFactory QFocusFrame QMimeSource QSqlError QTextTable
QAxObject QFont QModelIndex QSqlField QTextTableCell
QAxScript QFontDatabase QMotifStyle QSqlIndex QTextTableFormat
QAxScriptEngine QFontDialog QMouseDriverFactory QSqlQuery QThread
QAxScriptManager QFontInfo QMouseDriverPlugin QSqlQueryModel QThreadStorage
QAxWidget QFontMetrics QMouseEvent QSqlRecord QTime
QBasicTimer QFontMetricsF QMoveEvent QSqlRelation QTimeEdit
QBitArray QForm::Loader QMovie QSqlRelationalDelegate QTimer
QBitmap QFormBuilder QMultiHash QSqlRelationalTableModel QTimerEvent
QBoxLayout QFrame QMultiMap QSqlResult QToolBar
QBrush QFSFileEngine QMutableHashIterator QSqlTableModel QToolBox
QBuffer QFtp QMutableLinkedListIterator QStack QToolButton
QButtonGroup QGenericArgument QMutableListIterator QStackedLayout QToolTip
QByteArray QGenericReturnArgument QMutableMapIterator QStackedWidget QTranslator
QByteArrayMatcher QGLColormap QMutableVectorIterator QStandardItemModel QTreeView
QCache QGLContext QMutex QStatusBar QTreeWidget
QCDEStyle QGLFormat QMutexLocker QStatusTipEvent QTreeWidgetItem
QChar QGLPbuffer QNetworkProxy QString QUdpSocket
QCheckBox QGLWidget QObject QStringFilterModel QUrl
QChildEvent QGradient QObjectCleanupHandler QStringList QUrlInfo
QClipboard QGridLayout QPageSetupDialog QStringListModel QUuid
QCloseEvent QGroupBox QPaintDevice QStringMatcher QValidator
QColor QHash QPaintEngine QStyle QVariant
QColorDialog QHashIterator QPaintEngineState QStyleFactory QVarLengthArray
QColormap QHBoxLayout QPainter QStyleHintReturn QVBoxLayout
QComboBox QHeaderView QPainterPath QStyleHintReturnMask QVector
QCommonStyle QHelpEvent QPainterPathStroker QStyleOption QVectorIterator
QConicalGradient QHideEvent QPaintEvent QStyleOptionButton QWaitCondition
QContextMenuEvent QHostAddress QPair QStyleOptionComboBox QWhatsThis
QCopChannel QHostInfo QPalette QStyleOptionComplex QWhatsThisClickedEvent
QCoreApplication QHoverEvent QPen QStyleOptionDockWidget QWheelEvent
QCursor QHttp QPersistentModelIndex QStyleOptionFocusRect QWidget
QDataStream QHttpHeader QPicture QStyleOptionFrame QWidgetItem
QDate QHttpRequestHeader QPictureFormatPlugin QStyleOptionFrameV2 QWindowsMime
QDateEdit QHttpResponseHeader QPictureIO QStyleOptionGroupBox QWindowsStyle
QDateTime QIcon QPixmap QStyleOptionHeader QWindowStateChangeEvent
QDateTimeEdit QIconDragEvent QPixmapCache QStyleOptionMenuItem QWindowsXPStyle
QDecoration QIconEngine QPlastiqueStyle QStyleOptionProgressBar QWorkspace
QDecorationFactory QIconEnginePlugin QPluginLoader QStyleOptionProgressBarV2 QWriteLocker
QDecorationPlugin QImage QPoint QStyleOptionQ3DockWindow QWSInputMethod
QDesignerActionEditorInterface QImageIOHandler QPointer QStyleOptionQ3ListView QWSKeyboardHandler
QDesignerContainerExtension QImageIOPlugin QPointF QStyleOptionQ3ListViewItem QWSMouseHandler
QDesignerCustomWidgetCollectionInterface QImageReader QPolygon QStyleOptionRubberBand QWSServer
QDesignerCustomWidgetInterface QImageWriter QPolygonF QStyleOptionSlider QWSWindow
QDesignerFormEditorInterface QInputContext QPrintDialog QStyleOptionSpinBox QX11EmbedContainer
QDesignerFormWindowCursorInterface QInputContextFactory QPrintEngine QStyleOptionTab QX11EmbedWidget
QDesignerFormWindowInterface QInputContextPlugin QPrinter QStyleOptionTabBarBase QX11Info
QDesignerFormWindowManagerInterface QInputDialog QProcess QStyleOptionTabV2 QXmlAttributes
QDesignerMemberSheetExtension QInputEvent QProgressBar QStyleOptionTabWidgetFrame QXmlContentHandler
QDesignerObjectInspectorInterface QInputMethodEvent QProgressDialog QStyleOptionTitleBar QXmlDeclHandler
QDesignerPropertyEditorInterface QIntValidator QProxyModel QStyleOptionToolBar QXmlDefaultHandler
QDesignerPropertySheetExtension QIODevice QPushButton QStyleOptionToolBox QXmlDTDHandler
QDesignerTaskMenuExtension QItemDelegate QQueue QStyleOptionToolButton QXmlEntityResolver
QDesignerWidgetBoxInterface QItemEditorCreatorBase QRadialGradient QStyleOptionViewItem QXmlErrorHandler
QDesktopWidget QItemEditorFactory QRadioButton QStylePainter QXmlInputSource
QDial QItemSelection QReadLocker QStylePlugin QXmlLexicalHandler
QDialog QItemSelectionModel QReadWriteLock QSvgRenderer QXmlLocator
QDir QItemSelectionRange QRect QSvgWidget QXmlNamespaceSupport
QDirectPainter QKbdDriverFactory QRectF QSyntaxHighlighter QXmlParseException
QDirModel QKbdDriverPlugin QRegExp QSysInfo QXmlReader
QDockWidget QKeyEvent QRegExpValidator QTabBar QXmlSimpleReader
QDomAttr QKeySequence QRegion QTabletEvent
QDomCDATASection QLabel QResizeEvent QTableView
QDomCharacterData QLatin1Char QRubberBand QTableWidget

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


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Qt 4.1.0-rc1