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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 The Qt 3 Support Classes.

Q3Grid QDomElement QLibraryInfo QScrollBar QTextBlockGroup
Q3HBox QDomEntity QLine QSemaphore QTextBrowser
Q3Picture QDomEntityReference QLinearGradient QSessionManager QTextCharFormat
Q3VBox QDomImplementation QLineEdit QSet QTextCodec
QAbstractButton QDomNamedNodeMap QLineF QSetIterator QTextCodecPlugin
QAbstractEventDispatcher QDomNode QLinkedList QSettings QTextCursor
QAbstractItemDelegate QDomNodeList QLinkedListIterator QSharedData QTextDecoder
QAbstractItemModel QDomNotation QList QSharedDataPointer QTextDocument
QAbstractItemView QDomProcessingInstruction QListIterator QShortcut QTextDocumentFragment
QAbstractListModel QDomText QListView QShortcutEvent QTextEdit
QAbstractPageSetupDialog QDoubleSpinBox QListWidget QShowEvent QTextEncoder
QAbstractPrintDialog QDoubleValidator QListWidgetItem QSignalMapper QTextFormat
QAbstractScrollArea QDrag QLocale QSize QTextFragment
QAbstractSlider QDragEnterEvent QMacMime QSizeF QTextFrame
QAbstractSocket QDragLeaveEvent QMacStyle QSizeGrip QTextFrameFormat
QAbstractSpinBox QDragMoveEvent QMainWindow QSizePolicy QTextImageFormat
QAbstractTableModel QDropEvent QMap QSlider QTextInlineObject
QAbstractTextDocumentLayout QErrorMessage QMapIterator QSocketNotifier QTextLayout
QAccessible QEvent QMatrix QSound QTextLength
QAccessibleButton QEventLoop QMenu QSpacerItem QTextLine
QAccessibleComboBox QFile QMenuBar QSpinBox QTextList
QAccessibleDisplay QFileDialog QMessageBox QSplashScreen QTextListFormat
QAccessibleHeader QFileIconProvider QMetaClassInfo QSplitter QTextObject
QAccessibleIconView QFileInfo QMetaEnum QSplitterHandle QTextOption
QAccessibleInterface QFileOpenEvent QMetaMethod QSqlDatabase QTextStream
QAccessibleLineEdit QFocusEvent QMetaObject QSqlDriver QTextTable
QAccessibleListBox QFocusFrame QMetaProperty QSqlDriverCreator QTextTableCell
QAccessibleListView QFont QMetaType QSqlDriverCreatorBase QTextTableFormat
QAccessibleObject QFontDatabase QMimeData QSqlDriverPlugin QThread
QAccessiblePlugin QFontDialog QModelIndex QSqlError QThreadStorage
QAccessibleScrollBar QFontInfo QMotifStyle QSqlField QTime
QAccessibleScrollView QFontMetrics QMouseDriverFactory QSqlIndex QTimeEdit
QAccessibleSlider QFontMetricsF QMouseDriverPlugin QSqlQuery QTimer
QAccessibleSpinBox QFrame QMouseEvent QSqlQueryModel QTimerEvent
QAccessibleTabBar QFtp QMoveEvent QSqlRecord QToolBar
QAccessibleTextEdit QGfxDriverFactory QMovie QSqlRelation QToolBox
QAccessibleToolButton QGfxDriverPlugin QMultiHash QSqlRelationalTableModel QToolButton
QAccessibleWidget QGLColormap QMultiMap QSqlResult QToolTip
QAccessibleWidgetStack QGLContext QMutableHashIterator QSqlTableModel QTranslator
QAction QGLFormat QMutableLinkedListIterator QStack QTreeView
QActionEvent QGLWidget QMutableListIterator QStackedLayout QTreeWidget
QActionGroup QGradient QMutableMapIterator QStackedWidget QTreeWidgetItem
QApplication QGridLayout QMutableVectorIterator QStandardItemModel QUdpSocket
QBasicTimer QGroupBox QMutex QStatusBar QUrl
QBitArray QHash QMutexLocker QStatusTipEvent QUrlInfo
QBitmap QHashIterator QObject QString QUuid
QBoxLayout QHBoxLayout QObjectCleanupHandler QStringList QValidator
QBrush QHeaderView QPageSetupDialog QStringListModel QVariant
QBuffer QHelpEvent QPaintDevice QStringMatcher QVarLengthArray
QButtonGroup QHideEvent QPaintEngine QStyle QVBoxLayout
QByteArray QHostAddress QPainter QStyleFactory QVector
QByteArrayMatcher QHostInfo QPainterPath QStyleHintReturn QVectorIterator
QCache QHoverEvent QPaintEvent QStyleHintReturnMask QWaitCondition
QCDEStyle QHttp QPair QStyleOption QWhatsThis
QChar QHttpHeader QPalette QStyleOptionButton QWhatsThisClickedEvent
QCheckBox QHttpRequestHeader QPen QStyleOptionComboBox QWheelEvent
QChildEvent QHttpResponseHeader QPersistentModelIndex QStyleOptionComplex QWidget
QClipboard QIcon QPicture QStyleOptionDockWidget QWidgetContainerPlugin
QCloseEvent QIconDragEvent QPictureFormatPlugin QStyleOptionFocusRect QWidgetItem
QColor QIconEngine QPictureIO QStyleOptionFrame QWidgetPlugin
QColorDialog QIconEnginePlugin QPixmap QStyleOptionHeader QWindowsMime
QComboBox QImage QPixmapCache QStyleOptionMenuItem QWindowsStyle
QCommonStyle QImageIOHandler QPlastiqueStyle QStyleOptionProgressBar QWindowStateChangeEvent
QConicalGradient QImageIOHandlerFactoryInterface QPluginLoader QStyleOptionQ3DockWindow QWindowsXPStyle
QContextMenuEvent QImageIOPlugin QPoint QStyleOptionQ3ListView QWorkspace
QCopChannel QImageReader QPointer QStyleOptionQ3ListViewItem QWriteLocker
QCoreApplication QImageWriter QPointF QStyleOptionRubberBand QWSInputMethod
QCursor QInputContext QPolygon QStyleOptionSlider QWSKeyboardHandler
QDataStream QInputContextPlugin QPolygonF QStyleOptionSpinBox QWSMouseHandler
QDate QInputDialog QPrintEngine QStyleOptionTab QWSServer
QDateEdit QInputEvent QPrinter QStyleOptionTabWidgetFrame QWSWindow
QDateTime QInputMethodEvent QProcess QStyleOptionTitleBar QX11Info
QDateTimeEdit QIntValidator QProgressBar QStyleOptionToolBox QXmlAttributes
QDecoration QIODevice QProgressDialog QStyleOptionToolButton QXmlContentHandler
QDecorationFactory QItemDelegate QProxyModel QStyleOptionViewItem QXmlDeclHandler
QDecorationPlugin QItemEditorFactory QPushButton QStylePainter QXmlDefaultHandler
QDesktopWidget QItemSelection QQueue QStylePlugin QXmlDTDHandler
QDial QItemSelectionModel QRadialGradient QSysInfo QXmlEntityResolver
QDialog QItemSelectionRange QRadioButton QTabBar QXmlErrorHandler
QDir QKbdDriverFactory QReadLocker QTabletEvent QXmlInputSource
QDirectPainter QKbdDriverPlugin QReadWriteLock QTableView QXmlLexicalHandler
QDirModel QKeyEvent QRect QTableWidget QXmlLocator
QDockWidget QKeySequence QRectF QTableWidgetItem QXmlNamespaceSupport
QDomAttr QLabel QRegExp QTableWidgetSelectionRange QXmlParseException
QDomCDATASection QLatin1Char QRegExpValidator QTabWidget QXmlReader
QDomCharacterData QLatin1String QRegion QTcpServer QXmlSimpleReader
QDomComment QLayout QResizeEvent QTcpSocket
QDomDocument QLayoutItem QRubberBand QTemporaryFile
QDomDocumentFragment QLCDNumber QScreen QTextBlock
QDomDocumentType QLibrary QScrollArea QTextBlockFormat


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Qt 4.0.0-rc1