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Qt's Classes

For a shorter list that only includes the most frequently used classes, see Qt's Main Classes. For a list of Qt 3 support classes, see Qt3Support Classes.

Q3Picture QDesignerWidgetDataBaseInterface QItemDelegate QRadialGradient QTableWidget
QAbstractButton QDesignerWidgetDataBaseItemInterface QItemEditorCreatorBase QRadioButton QTableWidgetItem
QAbstractEventDispatcher QDesignerWidgetFactoryInterface QItemEditorFactory QReadLocker QTableWidgetSelectionRange
QAbstractExtensionFactory QDesktopWidget QItemSelection QReadWriteLock QTabWidget
QAbstractExtensionManager QDial QItemSelectionModel QRect QTcpServer
QAbstractFormBuilder QDialog QItemSelectionRange QRectF QTcpSocket
QAbstractItemDelegate QDir QKbdDriverFactory QRegExp QTemporaryFile
QAbstractItemModel QDirectPainter QKbdDriverPlugin QRegExpValidator QTextBlock
QAbstractItemView QDirModel QKeyEvent QRegion QTextBlockFormat
QAbstractListModel QDockWidget QKeySequence QResizeEvent QTextBlockGroup
QAbstractPageSetupDialog QDomAttr QLabel QRubberBand QTextBrowser
QAbstractPrintDialog QDomCDATASection QLatin1Char QScreen QTextCharFormat
QAbstractScrollArea QDomCharacterData QLatin1String QScrollArea QTextCodec
QAbstractSlider QDomComment QLayout QScrollBar QTextCodecPlugin
QAbstractSocket QDomDocument QLayoutItem QSemaphore QTextCursor
QAbstractSpinBox QDomDocumentFragment QLCDNumber QSessionManager QTextDecoder
QAbstractTableModel QDomDocumentType QLibrary QSet QTextDocument
QAbstractTextDocumentLayout QDomElement QLibraryInfo QSetIterator QTextDocumentFragment
QAccessible QDomEntity QLine QSettings QTextEdit
QAccessibleBridge QDomEntityReference QLinearGradient QSharedData QTextEncoder
QAccessibleBridgePlugin QDomImplementation QLineEdit QSharedDataPointer QTextFormat
QAccessibleEvent QDomNamedNodeMap QLineF QShortcut QTextFragment
QAccessibleInterface QDomNode QLinkedList QShortcutEvent QTextFrame
QAccessibleObject QDomNodeList QLinkedListIterator QShowEvent QTextFrameFormat
QAccessiblePlugin QDomNotation QList QSignalMapper QTextImageFormat
QAccessibleWidget QDomProcessingInstruction QListIterator QSize QTextInlineObject
QAction QDomText QListView QSizeF QTextLayout
QActionEvent QDoubleSpinBox QListWidget QSizeGrip QTextLength
QActionGroup QDoubleValidator QListWidgetItem QSizePolicy QTextLine
QApplication QDrag QLocale QSlider QTextList
QAxAggregated QDragEnterEvent QMacMime QSocketNotifier QTextListFormat
QAxBase QDragLeaveEvent QMacStyle QSound QTextObject
QAxBindable QDragMoveEvent QMainWindow QSpacerItem QTextOption
QAxFactory QDropEvent QMap QSpinBox QTextStream
QAxObject QErrorMessage QMapIterator QSplashScreen QTextTable
QAxScript QEvent QMatrix QSplitter QTextTableCell
QAxScriptEngine QEventLoop QMenu QSplitterHandle QTextTableFormat
QAxScriptManager QExtensionFactory QMenuBar QSqlDatabase QThread
QAxWidget QExtensionManager QMessageBox QSqlDriver QThreadStorage
QBasicTimer QFile QMetaClassInfo QSqlDriverCreator QTime
QBitArray QFileDialog QMetaEnum QSqlDriverCreatorBase QTimeEdit
QBitmap QFileIconProvider QMetaMethod QSqlDriverPlugin QTimer
QBoxLayout QFileInfo QMetaObject QSqlError QTimerEvent
QBrush QFileOpenEvent QMetaProperty QSqlField QToolBar
QBuffer QFlag QMetaType QSqlIndex QToolBox
QButtonGroup QFlags QMimeData QSqlQuery QToolButton
QByteArray QFocusEvent QModelIndex QSqlQueryModel QToolTip
QByteArrayMatcher QFocusFrame QMotifStyle QSqlRecord QTranslator
QCache QFont QMouseDriverFactory QSqlRelation QTreeView
QCDEStyle QFontDatabase QMouseDriverPlugin QSqlRelationalDelegate QTreeWidget
QChar QFontDialog QMouseEvent QSqlRelationalTableModel QTreeWidgetItem
QCheckBox QFontInfo QMoveEvent QSqlResult QUdpSocket
QChildEvent QFontMetrics QMovie QSqlTableModel QUrl
QClipboard QFontMetricsF QMultiHash QStack QUrlInfo
QCloseEvent QFormBuilder QMultiMap QStackedLayout QUuid
QColor QFrame QMutableHashIterator QStackedWidget QValidator
QColorDialog QFtp QMutableLinkedListIterator QStandardItemModel QVariant
QColormap QGfxDriverFactory QMutableListIterator QStatusBar QVarLengthArray
QComboBox QGfxDriverPlugin QMutableMapIterator QStatusTipEvent QVBoxLayout
QCommonStyle QGLColormap QMutableVectorIterator QString QVector
QConicalGradient QGLContext QMutex QStringList QVectorIterator
QContextMenuEvent QGLFormat QMutexLocker QStringListModel QWaitCondition
QCopChannel QGLWidget QObject QStringMatcher QWhatsThis
QCoreApplication QGradient QObjectCleanupHandler QStyle QWhatsThisClickedEvent
QCursor QGridLayout QPageSetupDialog QStyleFactory QWheelEvent
QDataStream QGroupBox QPaintDevice QStyleHintReturn QWidget
QDate QHash QPaintEngine QStyleHintReturnMask QWidgetItem
QDateEdit QHashIterator QPainter QStyleOption QWindowsMime
QDateTime QHBoxLayout QPainterPath QStyleOptionButton QWindowsStyle
QDateTimeEdit QHeaderView QPaintEvent QStyleOptionComboBox QWindowStateChangeEvent
QDecoration QHelpEvent QPair QStyleOptionComplex QWindowsXPStyle
QDecorationFactory QHideEvent QPalette QStyleOptionDockWidget QWorkspace
QDecorationPlugin QHostAddress QPen QStyleOptionFocusRect QWriteLocker
QDesignerContainerExtension QHostInfo QPersistentModelIndex QStyleOptionFrame QWSInputMethod
QDesignerCustomWidgetCollectionInterface QHoverEvent QPicture QStyleOptionHeader QWSKeyboardHandler
QDesignerCustomWidgetInterface QHttp QPictureFormatPlugin QStyleOptionMenuItem QWSMouseHandler
QDesignerDnDItemInterface QHttpHeader QPictureIO QStyleOptionProgressBar QWSServer
QDesignerExtraInfoExtension QHttpRequestHeader QPixmap QStyleOptionQ3DockWindow QWSWindow
QDesignerFormEditorInterface QHttpResponseHeader QPixmapCache QStyleOptionQ3ListView QX11EmbedContainer
QDesignerFormEditorPluginInterface QIcon QPlastiqueStyle QStyleOptionQ3ListViewItem QX11EmbedWidget
QDesignerFormWindowCursorInterface QIconDragEvent QPluginLoader QStyleOptionRubberBand QX11Info
QDesignerFormWindowInterface QIconEngine QPoint QStyleOptionSlider QXmlAttributes
QDesignerFormWindowManagerInterface QIconEnginePlugin QPointer QStyleOptionSpinBox QXmlContentHandler
QDesignerFormWindowToolInterface QImage QPointF QStyleOptionTab QXmlDeclHandler
QDesignerIconCacheInterface QImageIOHandler QPolygon QStyleOptionTabWidgetFrame QXmlDefaultHandler
QDesignerImageCollectionInterface QImageIOPlugin QPolygonF QStyleOptionTitleBar QXmlDTDHandler
QDesignerLayoutDecorationExtension QImageReader QPrintDialog QStyleOptionToolBox QXmlEntityResolver
QDesignerMemberSheetExtension QImageWriter QPrintEngine QStyleOptionToolButton QXmlErrorHandler
QDesignerMetaDataBaseInterface QInputContext QPrinter QStyleOptionViewItem QXmlInputSource
QDesignerMetaDataBaseItemInterface QInputContextPlugin QProcess QStylePainter QXmlLexicalHandler
QDesignerObjectInspectorInterface QInputDialog QProgressBar QStylePlugin QXmlLocator
QDesignerPropertyEditorInterface QInputEvent QProgressDialog QSysInfo QXmlNamespaceSupport
QDesignerPropertySheetExtension QInputMethodEvent QProxyModel QTabBar QXmlParseException
QDesignerTaskMenuExtension QIntValidator QPushButton QTabletEvent QXmlReader
QDesignerWidgetBoxInterface QIODevice QQueue QTableView QXmlSimpleReader


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Qt 4.0.0