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Class Inheritance Hierarchy

This list shows the C++ class inheritance relations between the classes in the Qt API.

The list is sorted roughly, but not completely, alphabetically.

• QAccessible
  • QAccessibleInterface
• QAsciiCache
• QAsciiCacheIterator
• QAsciiDictIterator
• QAsyncIO
  • QDataSink
  • QDataSource
    • QIODeviceSource
• QBitVal
• QCacheIterator
• QCanvasPixmapArray
• QChar
• QCharRef
• QColor
• QColorGroup
• QConstString
• QDataStream
• QDate
• QDateEdit
• QDateTime
• QDictIterator
• QDir
• QDomImplementation
• QDomNamedNodeMap
• QDomNode
  • QDomAttr
  • QDomCharacterData
    • QDomComment
    • QDomText
      • QDomCDATASection
  • QDomDocument
  • QDomDocumentFragment
  • QDomDocumentType
  • QDomElement
  • QDomEntity
  • QDomEntityReference
  • QDomNotation
  • QDomProcessingInstruction
• QDomNodeList
• QDropSite
• QFileInfo
• QFilePreview
• QFocusData
• QFont
• QFontDatabase
• QFontInfo
• QFontManager
• QFontMetrics
• QGL
  • QGLContext
  • QGLFormat
• QGLayoutIterator
• QGLColormap
• QGuardedPtr
• QHostAddress
• QIconDragItem
• QIconSet
• QImage
• QImageConsumer
• QImageDecoder
• QImageFormat
• QImageFormatPlugin
• QImageFormatType
• QImageIO
• QIntCache
• QIntCacheIterator
• QIntDictIterator
• QIODevice
  • QBuffer
  • QFile
  • QSocketDevice
• QLayoutItem
  • QSpacerItem
  • QWidgetItem
• QLayoutIterator
• QLibrary
• QListBoxItem
  • QListBoxPixmap
  • QListBoxText
• QListViewItemIterator
• QLock
• QMap
• QMapConstIterator
• QMapIterator
• QMemArray
  • QByteArray
    • QBitArray
    • QCString
  • QPointArray
• QMenuData
• QMetaObject
• QMetaProperty
• QMimeSource
• QMimeSourceFactory
• QMovie
• QMutex
• QNPlugin
• QNPStream
• QPaintDevice
  • QPicture
  • QPixmap
    • QBitmap
    • QCanvasPixmap
  • QPrinter
• QPaintDeviceMetrics
• QPair
• QPalette
• QPixmapCache
• QPNGImagePacker
• QPoint
• QPtrCollection
  • QAsciiDict
  • QCache
  • QDict
  • QIntDict
  • QPtrDict
  • QPtrList
    • QObjectList
    • QSortedList
    • QStrList
      • QStrIList
  • QPtrVector
• QPtrDictIterator
• QPtrListIterator
  • QObjectListIt
  • QStrListIterator
• QPtrQueue
• QPtrStack
• QRangeControl
• QRect
• QRegExp
• QRegion
• QScreen
• QSemaphore
• QSettings
• QSimpleRichText
• QSize
• QSizePolicy
• QSql
• QSqlDriverPlugin
• QSqlError
• QSqlField
• QSqlFieldInfo
• QSqlPropertyMap
• QSqlQuery
• QSqlRecord
  • QSqlCursor
  • QSqlIndex
• QSqlRecordInfo
• QSqlResult
• QString
• QStyleFactory
• QStyleOption
• QStylePlugin
• Qt
  • QBrush
  • QCanvasItem
    • QCanvasPolygonalItem
      • QCanvasEllipse
      • QCanvasLine
      • QCanvasPolygon
        • QCanvasSpline
      • QCanvasRectangle
    • QCanvasSprite
    • QCanvasText
  • QCursor
  • QCustomMenuItem
  • QEvent
    • QChildEvent
    • QCloseEvent
    • QContextMenuEvent
    • QCustomEvent
    • QDragLeaveEvent
    • QDropEvent
      • QDragMoveEvent
        • QDragEnterEvent
    • QFocusEvent
    • QHideEvent
    • QIMEvent
    • QKeyEvent
    • QMouseEvent
    • QMoveEvent
    • QPaintEvent
    • QResizeEvent
    • QShowEvent
    • QTabletEvent
    • QTimerEvent
    • QWheelEvent
  • QIconViewItem
  • QKeySequence
  • QListViewItem
    • QCheckListItem
  • QObject
    • QAccel
    • QAccessibleObject
    • QAction
      • QActionGroup
    • QApplication
      • QXtApplication
    • QCanvas
    • QClipboard
    • QCopChannel
    • QDataPump
    • QDns
    • QDragObject
      • QIconDrag
      • QImageDrag
      • QStoredDrag
        • QColorDrag
        • QUriDrag
      • QTextDrag
    • QEditorFactory
      • QSqlEditorFactory
    • QFileIconProvider
    • QLayout
      • QBoxLayout
        • QHBoxLayout
        • QVBoxLayout
      • QGridLayout
    • QNetworkOperation
    • QNetworkProtocol
      • QFtp
      • QHttp
      • QLocalFs
    • QNPInstance
    • QObjectCleanupHandler
    • QProcess
    • QServerSocket
    • QSessionManager
    • QSignal
    • QSignalMapper
    • QSocket
    • QSocketNotifier
    • QSound
    • QSqlDatabase
    • QSqlDriver
    • QSqlForm
    • QStyle
      • QCommonStyle
        • QMotifStyle
          • QCDEStyle
          • QMotifPlusStyle
          • QSGIStyle
        • QWindowsStyle
          • QPlatinumStyle
    • QStyleSheet
    • QTimer
    • QToolTipGroup
    • QTranslator
    • QUrlOperator
    • QValidator
      • QDoubleValidator
      • QIntValidator
      • QRegExpValidator
    • QWidget
      • QButton
        • QCheckBox
        • QPushButton
        • QRadioButton
        • QToolButton
      • QComboBox
      • QDataBrowser
      • QDataView
      • QDateTimeEdit
      • QDesktopWidget
      • QDial
      • QDialog
        • QColorDialog
        • QErrorMessage
        • QFileDialog
        • QFontDialog
        • QInputDialog
        • QMessageBox
        • QProgressDialog
        • QTabDialog
        • QWizard
      • QDockArea
      • QFrame
        • QDockWindow
          • QToolBar
        • QGrid
        • QGroupBox
          • QButtonGroup
            • QHButtonGroup
            • QVButtonGroup
          • QHGroupBox
          • QVGroupBox
        • QHBox
          • QVBox
        • QLabel
        • QLCDNumber
        • QLineEdit
        • QMenuBar
        • QPopupMenu
        • QProgressBar
        • QScrollView
          • QCanvasView
          • QGridView
          • QIconView
          • QListBox
          • QListView
          • QTable
            • QDataTable
          • QTextEdit
            • QMultiLineEdit
            • QTextBrowser
            • QTextView
        • QSplitter
        • QtTableView
          • QtMultiLineEdit
        • QWidgetStack
      • QGLWidget
      • QHeader
      • QMainWindow
      • QNPWidget
      • QScrollBar
      • QSizeGrip
      • QSlider
      • QSpinBox
      • QStatusBar
      • QTabBar
      • QTabWidget
      • QWorkspace
      • QXtWidget
    • QWSKeyboardHandler
    • QWSMouseHandler
  • QPainter
    • QDirectPainter
  • QPen
  • QStyleSheetItem
  • QTab
  • QTableItem
    • QCheckTableItem
    • QComboTableItem
  • QThread
  • QToolTip
  • QWhatsThis
• QTableSelection
• QTextCodec
  • QEucJpCodec
  • QEucKrCodec
  • QGb18030Codec
    • QGbkCodec
  • QHebrewCodec
  • QJisCodec
  • QSjisCodec
  • QTsciiCodec
• QTextCodecPlugin
• QTextDecoder
• QTextEncoder
• QTextStream
  • QTextIStream
  • QTextOStream
• QTime
• QTimeEdit
• QTranslatorMessage
• QUrl
• QUrlInfo
• QValueList
  • QCanvasItemList
  • QStringList
  • QValueStack
• QValueListConstIterator
• QValueListIterator
• QValueVector
• QVariant
• QWaitCondition
• QWidgetFactory
• QWidgetPlugin
• QWindowsMime
• QWMatrix
• QWSDecoration
• QWSServer
• QWSWindow
• QXmlAttributes
• QXmlContentHandler
  • QXmlDefaultHandler
• QXmlDeclHandler
• QXmlDTDHandler
• QXmlEntityResolver
• QXmlErrorHandler
• QXmlInputSource
• QXmlLexicalHandler
• QXmlLocator
• QXmlNamespaceSupport
• QXmlParseException
• QXmlReader
  • QXmlSimpleReader