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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 4.1 Class Chart (PDF).

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

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


Copyright © 2006 Trolltech Trademarks
Qt 4.1.2