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


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Qt 4.0.0-rc1