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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 compatibility classes, see The Qt 3 Compatibility Classes.

QAbstractButton QDomEntity QLibrary QSettings QTextDocumentFragment
QAbstractEventDispatcher QDomEntityReference QLineEdit QSGIStyle QTextEdit
QAbstractItemDelegate QDomImplementation QLineF QSharedData QTextEncoder
QAbstractItemModel QDomNamedNodeMap QLinkedList QSharedDataPointer QTextFormat
QAbstractItemView QDomNode QLinkedListIterator QShortcut QTextFragment
QAbstractListModel QDomNodeList QLinkedListMutableIterator QShowEvent QTextFrame
QAbstractSlider QDomNotation QList QSignal QTextFrameFormat
QAbstractSocket QDomProcessingInstruction QListIterator QSignalMapper QTextImageFormat
QAbstractSpinBox QDomText QListMutableIterator QSize QTextInlineObject
QAbstractTableModel QDoubleSpinBox QListView QSizeF QTextIStream
QAbstractTextDocumentLayout QDoubleValidator QListWidget QSizeGrip QTextLayout
QAccessible QDrag QListWidgetItem QSizePolicy QTextLength
QAccessibleButton QDragEnterEvent QLocale QSlider QTextLine
QAccessibleComboBox QDragLeaveEvent QMacMime QSocketNotifier QTextList
QAccessibleDisplay QDragMoveEvent QMacStyle QSound QTextListFormat
QAccessibleHeader QDropEvent QMainWindow QSpacerItem QTextObject
QAccessibleIconView QErrorMessage QMap QSpinBox QTextOStream
QAccessibleInterface QEvent QMapIterator QSplashScreen QTextStream
QAccessibleLineEdit QFile QMapMutableIterator QSplitter QTextTable
QAccessibleListBox QFileDialog QMatrix QSqlDatabase QTextTableCell
QAccessibleListView QFileEngine QMenu QSqlDriver QTextTableFormat
QAccessibleObject QFileEngineHandler QMenuBar QSqlDriverCreator QThread
QAccessiblePlugin QFileIconProvider QMessageBox QSqlDriverCreatorBase QThreadStorage
QAccessibleScrollBar QFileInfo QMetaClassInfo QSqlDriverPlugin QTime
QAccessibleScrollView QFileOpenEvent QMetaEnum QSqlError QTimer
QAccessibleSlider QFocusEvent QMetaMember QSqlField QTimerEvent
QAccessibleSpinBox QFont QMetaObject QSqlIndex QToolBar
QAccessibleTabBar QFontDatabase QMetaProperty QSqlQuery QToolBarChangeEvent
QAccessibleTextEdit QFontDialog QMimeData QSqlQueryModel QToolBox
QAccessibleToolButton QFontInfo QModelIndex QSqlRecord QToolButton
QAccessibleWidget QFontMetrics QMotifPlusStyle QSqlRelation QToolTip
QAccessibleWidgetStack QFontMetricsF QMotifStyle QSqlRelationalDelegate QTranslator
QAction QFrame QMouseDriverFactory QSqlRelationalTableModel QTranslatorMessage
QActionGroup QFtp QMouseDriverPlugin QSqlResult QTreeView
QApplication QGb2312Codec QMouseEvent QSqlTableModel QTreeWidget
QBasicTimer QGbkCodec QMoveEvent QStack QTreeWidgetItem
QBig5hkscsCodec QGfxDriverFactory QMovie QStackedLayout QTsciiCodec
QBitArray QGfxDriverPlugin QMultiHash QStackedWidget QUdpSocket
QBitmap QGLColormap QMultiMap QStandardItemModel QUrl
QBoxLayout QGLContext QMutex QStatusBar QUrlInfo
QBrush QGLFormat QMutexLocker QString QUuid
QBuffer QGLWidget QObject QStringList QValidator
QButtonGroup QGridLayout QObjectCleanupHandler QStyle QVariant
QByteArray QGridWidget QPaintDevice QStyleFactory QVarLengthArray
QByteArrayMatcher QGroupBox QPaintEngine QStyleOption QVBoxLayout
QCache QHash QPainter QStyleOptionButton QVBoxWidget
QCDEStyle QHashIterator QPainterPath QStyleOptionComboBox QVector
QChar QHashMutableIterator QPaintEvent QStyleOptionComplex QVectorIterator
QCheckBox QHBoxLayout QPair QStyleOptionDockWindow QVectorMutableIterator
QChildEvent QHBoxWidget QPalette QStyleOptionFocusRect QViewport
QClipboard QHeaderView QPen QStyleOptionFrame QWaitCondition
QCloseEvent QHideEvent QPersistentModelIndex QStyleOptionHeader QWhatsThis
QColor QHostAddress QPicture QStyleOptionListView QWhatsThisAction
QColorDialog QHttp QPictureFormatPlugin QStyleOptionListViewItem QWheelEvent
QComboBox QHttpHeader QPictureIO QStyleOptionMenuItem QWidget
QCommonStyle QHttpRequestHeader QPixmap QStyleOptionProgressBar QWidgetContainerPlugin
QContextMenuEvent QHttpResponseHeader QPixmapCache QStyleOptionQ3DockWindow QWidgetItem
QCopChannel QIcon QPlatinumStyle QStyleOptionSlider QWidgetPlugin
QCoreApplication QIconDragEvent QPluginLoader QStyleOptionSpinBox QWidgetView
QCoreVariant QImage QPNGImagePacker QStyleOptionTab QWindowsMime
QCursor QImageConsumer QPoint QStyleOptionTitleBar QWindowsStyle
QCustomEvent QImageDecoder QPointArray QStyleOptionToolBox QWindowsXPStyle
QDataStream QImageFormat QPointer QStyleOptionToolButton QWSInputMethod
QDate QImageFormatPlugin QPointF QStyleOptionViewItem QWSKeyboardHandler
QDateTime QImageFormatType QPolygon QStylePainter QWSMouseHandler
QDateTimeEdit QImageIO QPrinter QStylePlugin QWSServer
QDecoration QInputContext QProcess QTabBar QWSWindow
QDecorationFactory QInputContextPlugin QProgressBar QTabletEvent QX11Info
QDecorationPlugin QInputDialog QProgressDialog QTableView QXmlAttributes
QDesktopWidget QInputEvent QProxyModel QTableWidget QXmlContentHandler
QDial QInputMethodEvent QPushButton QTableWidgetItem QXmlDeclHandler
QDialog QIntValidator QQueue QTableWidgetSelectionRange QXmlDefaultHandler
QDir QIODevice QRadioButton QTabWidget QXmlDTDHandler
QDirectPainter QItemDelegate QReadWriteLock QTcpServer QXmlEntityResolver
QDirModel QItemSelection QRect QTcpSocket QXmlErrorHandler
QDns QItemSelectionModel QRectF QTemporaryFile QXmlInputSource
QDnsHostInfo QItemSelectionRange QRegExp QTextBlock QXmlLexicalHandler
QDockWindow QKbdDriverFactory QRegExpValidator QTextBlockFormat QXmlLocator
QDomAttr QKbdDriverPlugin QRegion QTextBlockGroup QXmlNamespaceSupport
QDomCDATASection QKeyEvent QResizeEvent QTextBrowser QXmlParseException
QDomCharacterData QKeySequence QResource QTextCharFormat QXmlReader
QDomComment QLabel QRubberBand QTextCodec QXmlSimpleReader
QDomDocument QLatin1String QScreen QTextCodecPlugin
QDomDocumentFragment QLayout QScrollBar QTextCursor
QDomDocumentType QLayoutItem QSemaphore QTextDecoder
QDomElement QLCDNumber QSessionManager QTextDocument


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Qt 4.0.0-b1