All Classes

This is a list of all Qt classes. For a list of the classes provided for compatibility with Qt3, see Qt3 Support Classes. For classes that have been deprecated, see the Obsolete Classes list.

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A
QAbstractAnimation
QAbstractButton
QAbstractEventDispatcher
QAbstractExtensionFactory
QAbstractExtensionManager
QAbstractFileEngine
QAbstractFileEngineHandler
QAbstractFileEngineIterator
QAbstractFontEngine
QAbstractFormBuilder
QAbstractGraphicsShapeItem
QAbstractItemDelegate
QAbstractItemModel
QAbstractItemView
QAbstractListModel
QAbstractMessageHandler
QAbstractNetworkCache
QAbstractPrintDialog
QAbstractProxyModel
QAbstractScrollArea
QAbstractSlider
QAbstractSocket
QAbstractSpinBox
QAbstractState
QAbstractTableModel
QAbstractTextDocumentLayout
QAbstractTransition
QAbstractUriResolver
QAbstractVideoBuffer
QAbstractVideoSurface
QAbstractXmlNodeModel
QAbstractXmlReceiver
QAccessible
QAccessibleBridge
QAccessibleBridgePlugin
QAccessibleEvent
QAccessibleInterface
QAccessibleObject
QAccessiblePlugin
QAccessibleWidget
QAction
QActionEvent
QActionGroup
QAnimationGroup
QApplication
QAtomicInt
QAtomicPointer
AudioDataOutput (Phonon)
QAudioDeviceInfo
QAudioFormat
QAudioInput
QAudioOutput
QAuthenticator
QAxAggregated
QAxBase
QAxBindable
QAxFactory
QAxObject
QAxScript
QAxScriptEngine
QAxScriptManager
QAxWidget
B
QBasicTimer
QBitArray
QBitmap
QBoxLayout
QBrush
QBuffer
QButtonGroup
QByteArray
QByteArrayMatcher
C
QCache
QCalendarWidget
QCDEStyle
QChar
QCheckBox
QChildEvent
QCleanlooksStyle
QClipboard
QCloseEvent
QColor
QColorDialog
QColormap
QColumnView
QComboBox
QCommandLinkButton
QCommonStyle
QCompleter
QConicalGradient
QContextMenuEvent
QContiguousCache
QCopChannel
QCoreApplication
QCryptographicHash
QCursor
QCustomRasterPaintDevice
D
QDataStream
QDataWidgetMapper
QDate
QDateEdit
QDateTime
QDateTimeEdit
QDBusAbstractAdaptor
QDBusAbstractInterface
QDBusArgument
QDBusConnection
QDBusConnectionInterface
QDBusContext
QDBusError
QDBusInterface
QDBusMessage
QDBusObjectPath
QDBusPendingCall
QDBusPendingCallWatcher
QDBusPendingReply
QDBusReply
QDBusServiceWatcher
QDBusSignature
QDBusUnixFileDescriptor
QDBusVariant
QDebug
QDeclarativeComponent
QDeclarativeContext
QDeclarativeEngine
QDeclarativeError
QDeclarativeExpression
QDeclarativeExtensionPlugin
QDeclarativeImageProvider
QDeclarativeItem
QDeclarativeListProperty
QDeclarativeListReference
QDeclarativeNetworkAccessManagerFactory
QDeclarativeParserStatus
QDeclarativeProperty
QDeclarativePropertyMap
QDeclarativePropertyValueSource
QDeclarativeScriptString
QDeclarativeView
QDecoration
QDecorationDefault
QDecorationFactory
QDecorationPlugin
QDesignerActionEditorInterface
QDesignerContainerExtension
QDesignerCustomWidgetCollectionInterface
QDesignerCustomWidgetInterface
QDesignerDynamicPropertySheetExtension
QDesignerFormEditorInterface
QDesignerFormWindowCursorInterface
QDesignerFormWindowInterface
QDesignerFormWindowManagerInterface
QDesignerMemberSheetExtension
QDesignerObjectInspectorInterface
QDesignerPropertyEditorInterface
QDesignerPropertySheetExtension
QDesignerTaskMenuExtension
QDesignerWidgetBoxInterface
QDesktopServices
QDesktopWidget
QDial
QDialog
QDialogButtonBox
QDir
QDirectPainter
QDirIterator
QDockWidget
QDomAttr
QDomCDATASection
QDomCharacterData
QDomComment
QDomDocument
QDomDocumentFragment
QDomDocumentType
QDomElement
QDomEntity
QDomEntityReference
QDomImplementation
QDomNamedNodeMap
QDomNode
QDomNodeList
QDomNotation
QDomProcessingInstruction
QDomText
QDoubleSpinBox
QDoubleValidator
QDrag
QDragEnterEvent
QDragLeaveEvent
QDragMoveEvent
QDropEvent
QDynamicPropertyChangeEvent
E
QEasingCurve
Effect (Phonon)
EffectParameter (Phonon)
EffectWidget (Phonon)
QElapsedTimer
QErrorMessage
QEvent
QEventLoop
QEventTransition
Exception (QtConcurrent)
QExplicitlySharedDataPointer
QExtensionFactory
QExtensionManager
F
QFile
QFileDialog
QFileIconProvider
QFileInfo
QFileOpenEvent
QFileSystemModel
QFileSystemWatcher
QFinalState
QFlag
QFlags
QFocusEvent
QFocusFrame
QFont
QFontComboBox
QFontDatabase
QFontDialog
QFontEngineInfo
QFontEnginePlugin
QFontInfo
QFontMetrics
QFontMetricsF
QFormBuilder
QFormLayout
QFrame
QFSFileEngine
QFtp
QFuture
QFutureIterator
QFutureSynchronizer
QFutureWatcher
G
QGenericArgument
QGenericMatrix
QGenericPlugin
QGenericPluginFactory
QGenericReturnArgument
QGesture
QGestureEvent
QGestureRecognizer
QGLBuffer
QGLColormap
QGLContext
QGLFormat
QGLFramebufferObject
QGLFramebufferObjectFormat
QGLFunctions
QGLPixelBuffer
QGLShader
QGLShaderProgram
QGLWidget
QGlyphRun
QGradient
QGraphicsAnchor
QGraphicsAnchorLayout
QGraphicsBlurEffect
QGraphicsColorizeEffect
QGraphicsDropShadowEffect
QGraphicsEffect
QGraphicsEllipseItem
QGraphicsGridLayout
QGraphicsItem
QGraphicsItemAnimation
QGraphicsItemGroup
QGraphicsLayout
QGraphicsLayoutItem
QGraphicsLinearLayout
QGraphicsLineItem
QGraphicsObject
QGraphicsOpacityEffect
QGraphicsPathItem
QGraphicsPixmapItem
QGraphicsPolygonItem
QGraphicsProxyWidget
QGraphicsRectItem
QGraphicsRotation
QGraphicsScale
QGraphicsScene
QGraphicsSceneContextMenuEvent
QGraphicsSceneDragDropEvent
QGraphicsSceneEvent
QGraphicsSceneHelpEvent
QGraphicsSceneHoverEvent
QGraphicsSceneMouseEvent
QGraphicsSceneMoveEvent
QGraphicsSceneResizeEvent
QGraphicsSceneWheelEvent
QGraphicsSimpleTextItem
QGraphicsSvgItem
QGraphicsTextItem
QGraphicsTransform
QGraphicsView
QGraphicsWebView
QGraphicsWidget
QGridLayout
QGroupBox
QGtkStyle
H
QHash
QHashIterator
QHBoxLayout
QHeaderView
QHelpContentItem
QHelpContentModel
QHelpContentWidget
QHelpEngine
QHelpEngineCore
QHelpEvent
QHelpIndexModel
QHelpIndexWidget
QHelpSearchEngine
QHelpSearchQuery
QHelpSearchQueryWidget
QHelpSearchResultWidget
QHideEvent
QHistoryState
QHostAddress
QHostInfo
QHoverEvent
QHttpMultiPart
QHttpPart
I
QIcon
QIconDragEvent
QIconEngine
QIconEnginePlugin
QIconEnginePluginV2
QIconEngineV2
QIdentityProxyModel
QImage
QImageIOHandler
QImageIOPlugin
QImageReader
QImageWriter
QInputContext
QInputContextFactory
QInputContextPlugin
QInputDialog
QInputEvent
QInputMethodEvent
QIntValidator
QIODevice
QItemDelegate
QItemEditorCreator
QItemEditorCreatorBase
QItemEditorFactory
QItemSelection
QItemSelectionModel
QItemSelectionRange
K
QKbdDriverFactory
QKbdDriverPlugin
QKeyEvent
QKeyEventTransition
QKeySequence
L
QLabel
QLatin1Char
QLatin1String
QLayout
QLayoutItem
QLCDNumber
QLibrary
QLibraryInfo
QLine
QLinearGradient
QLineEdit
QLineF
QLinkedList
QLinkedListIterator
QList
QListIterator
QListView
QListWidget
QListWidgetItem
QLocale
QLocalServer
QLocalSocket
M
QMacCocoaViewContainer
QMacNativeWidget
QMacPasteboardMime
QMacStyle
QMainWindow
QMap
QMapIterator
QMargins
QMatrix4x4
QMdiArea
QMdiSubWindow
MediaController (Phonon)
MediaNode (Phonon)
MediaObject (Phonon)
MediaSource (Phonon)
QMenu
QMenuBar
QMessageBox
QMetaClassInfo
QMetaEnum
QMetaMethod
QMetaObject
QMetaProperty
QMetaType
QMimeData
QModelIndex
QMotifStyle
QMouseDriverFactory
QMouseDriverPlugin
QMouseEvent
QMouseEventTransition
QMoveEvent
QMovie
QMultiHash
QMultiMap
QMutableHashIterator
QMutableLinkedListIterator
QMutableListIterator
QMutableMapIterator
QMutableSetIterator
QMutableVectorIterator
QMutex
QMutexLocker
N
QNetworkAccessManager
QNetworkAddressEntry
QNetworkCacheMetaData
QNetworkConfiguration
QNetworkConfigurationManager
QNetworkCookie
QNetworkCookieJar
QNetworkDiskCache
QNetworkInterface
QNetworkProxy
QNetworkProxyFactory
QNetworkProxyQuery
QNetworkReply
QNetworkRequest
QNetworkSession
Notifier (Phonon::BackendCapabilities)
O
QObject
QObjectCleanupHandler
ObjectDescription (Phonon)
P
QPageSetupDialog
QPaintDevice
QPaintEngine
QPaintEngineState
QPainter
QPainterPath
QPainterPathStroker
QPaintEvent
QPair
QPalette
QPanGesture
QParallelAnimationGroup
Path (Phonon)
QPauseAnimation
QPen
QPersistentModelIndex
QPicture
QPinchGesture
QPixmap
QPixmapCache
QPlainTextDocumentLayout
QPlainTextEdit
QPlastiqueStyle
QPlatformCursor
QPlatformCursorImage
QPlatformFontDatabase
QPlatformWindowFormat
QPluginLoader
QPoint
QPointer
QPointF
QPolygon
QPolygonF
QPrintDialog
QPrintEngine
QPrinter
QPrinterInfo
QPrintPreviewDialog
QPrintPreviewWidget
QProcess
QProcessEnvironment
QProgressBar
QProgressDialog
QPropertyAnimation
QProxyScreen
QProxyScreenCursor
QProxyStyle
QPushButton
Q
QTouchEventSequence (QTest)
QQuaternion
QQueue
R
QRadialGradient
QRadioButton
QRasterPaintEngine
QRawFont
QReadLocker
QReadWriteLock
QRect
QRectF
QRegExp
QRegExpValidator
QRegion
QResizeEvent
QResource
QRubberBand
QRunnable
S
QS60MainApplication
QS60MainAppUi
QS60MainDocument
QS60Style
QScopedArrayPointer
QScopedPointer
QScopedValueRollback
QScreen
QScreenCursor
QScreenDriverFactory
QScreenDriverPlugin
QScriptable
QScriptClass
QScriptClassPropertyIterator
QScriptContext
QScriptContextInfo
QScriptEngine
QScriptEngineAgent
QScriptEngineDebugger
QScriptExtensionPlugin
QScriptProgram
QScriptString
QScriptSyntaxCheckResult
QScriptValue
QScriptValueIterator
QScrollArea
QScrollBar
SeekSlider (Phonon)
QSemaphore
QSequentialAnimationGroup
QSessionManager
QSet
QSetIterator
QSettings
QSharedData
QSharedDataPointer
QSharedMemory
QSharedPointer
QShortcut
QShortcutEvent
QShowEvent
QSignalMapper
QSignalSpy
QSignalTransition
QSimpleXmlNodeModel
QSize
QSizeF
QSizeGrip
QSizePolicy
QSlider
QSocketNotifier
QSortFilterProxyModel
QSound
QSourceLocation
QSpacerItem
QSpinBox
QSplashScreen
QSplitter
QSplitterHandle
QSqlDatabase
QSqlDriver
QSqlDriverCreator
QSqlDriverCreatorBase
QSqlDriverPlugin
QSqlError
QSqlField
QSqlIndex
QSqlQuery
QSqlQueryModel
QSqlRecord
QSqlRelation
QSqlRelationalDelegate
QSqlRelationalTableModel
QSqlResult
QSqlTableModel
QSslCertificate
QSslCipher
QSslConfiguration
QSslError
QSslKey
QSslSocket
QStack
QStackedLayout
QStackedWidget
QStandardItem
QStandardItemEditorCreator
QStandardItemModel
QState
QStateMachine
QStaticText
QStatusBar
QStatusTipEvent
QString
QStringList
QStringListModel
QStringMatcher
QStringRef
QStyle
QStyledItemDelegate
QStyleFactory
QStyleHintReturn
QStyleHintReturnMask
QStyleHintReturnVariant
QStyleOption
QStyleOptionButton
QStyleOptionComboBox
QStyleOptionComplex
QStyleOptionDockWidget
QStyleOptionFocusRect
QStyleOptionFrame
QStyleOptionFrameV2
QStyleOptionFrameV3
QStyleOptionGraphicsItem
QStyleOptionGroupBox
QStyleOptionHeader
QStyleOptionMenuItem
QStyleOptionProgressBar
QStyleOptionProgressBarV2
QStyleOptionQ3DockWindow
QStyleOptionQ3ListView
QStyleOptionQ3ListViewItem
QStyleOptionRubberBand
QStyleOptionSizeGrip
QStyleOptionSlider
QStyleOptionSpinBox
QStyleOptionTab
QStyleOptionTabBarBase
QStyleOptionTabBarBaseV2
QStyleOptionTabV2
QStyleOptionTabV3
QStyleOptionTabWidgetFrame
QStyleOptionTabWidgetFrameV2
QStyleOptionTitleBar
QStyleOptionToolBar
QStyleOptionToolBox
QStyleOptionToolBoxV2
QStyleOptionToolButton
QStyleOptionViewItem
QStyleOptionViewItemV2
QStyleOptionViewItemV3
QStyleOptionViewItemV4
QStylePainter
QStylePlugin
QSupportedWritingSystems
QSvgGenerator
QSvgRenderer
QSvgWidget
QSwipeGesture
QSymbianEvent
QSymbianGraphicsSystemHelper
QSyntaxHighlighter
QSysInfo
QSystemLocale
QSystemSemaphore
QSystemTrayIcon
T
QTabBar
QTabletEvent
QTableView
QTableWidget
QTableWidgetItem
QTableWidgetSelectionRange
QTabWidget
QTapAndHoldGesture
QTapGesture
QTcpServer
QTcpSocket
QTemporaryFile
QTestEventList
QTextBlock
QTextBlockFormat
QTextBlockGroup
QTextBlockUserData
QTextBoundaryFinder
QTextBrowser
QTextCharFormat
QTextCodec
QTextCodecPlugin
QTextCursor
QTextDecoder
QTextDocument
QTextDocumentFragment
QTextDocumentWriter
QTextEdit
QTextEncoder
QTextFormat
QTextFragment
QTextFrame
QTextFrameFormat
QTextImageFormat
QTextInlineObject
QTextItem
QTextLayout
QTextLength
QTextLine
QTextList
QTextListFormat
QTextObject
QTextObjectInterface
QTextOption
QTextStream
QTextTable
QTextTableCell
QTextTableCellFormat
QTextTableFormat
QThread
QThreadPool
QThreadStorage
QTileRules
QTime
QTimeEdit
QTimeLine
QTimer
QTimerEvent
QToolBar
QToolBox
QToolButton
QToolTip
QTouchEvent
QTransform
QTranslator
QTreeView
QTreeWidget
QTreeWidgetItem
QTreeWidgetItemIterator
U
QUdpSocket
QUiLoader
QUndoCommand
QUndoGroup
QUndoStack
QUndoView
UnhandledException (QtConcurrent)
QUrl
QUrlInfo
QUuid
V
QValidator
QVariant
QVariantAnimation
QVarLengthArray
QVBoxLayout
QVector
QVector2D
QVector3D
QVector4D
QVectorIterator
QVideoFrame
VideoPlayer (Phonon)
QVideoSurfaceFormat
VideoWidget (Phonon)
VideoWidgetInterface44 (Phonon)
VolumeSlider (Phonon)
W
QWaitCondition
QWeakPointer
QWebDatabase
QWebElement
QWebElementCollection
QWebFrame
QWebHistory
QWebHistoryInterface
QWebHistoryItem
QWebHitTestResult
QWebInspector
QWebPage
QWebPluginFactory
QWebSecurityOrigin
QWebSettings
QWebView
QWhatsThis
QWhatsThisClickedEvent
QWheelEvent
QWidget
QWidgetAction
QWidgetItem
QWindowsMime
QWindowsStyle
QWindowStateChangeEvent
QWindowsVistaStyle
QWindowsXPStyle
QWizard
QWizardPage
QWriteLocker
QWSCalibratedMouseHandler
QWSClient
QWSEmbedWidget
QWSEvent
QWSGLWindowSurface
QWSInputMethod
QWSKeyboardHandler
QWSMouseHandler
QWSPointerCalibrationData
QWSScreenSaver
QWSServer
QWSWindow
X
QX11EmbedContainer
QX11EmbedWidget
QX11Info
QXmlAttributes
QXmlContentHandler
QXmlDeclHandler
QXmlDefaultHandler
QXmlDTDHandler
QXmlEntityResolver
QXmlErrorHandler
QXmlFormatter
QXmlInputSource
QXmlItem
QXmlLexicalHandler
QXmlLocator
QXmlName
QXmlNamePool
QXmlNamespaceSupport
QXmlNodeModelIndex
QXmlParseException
QXmlQuery
QXmlReader
QXmlResultItems
QXmlSchema
QXmlSchemaValidator
QXmlSerializer
QXmlSimpleReader
QXmlStreamAttribute
QXmlStreamAttributes
QXmlStreamEntityDeclaration
QXmlStreamEntityResolver
QXmlStreamNamespaceDeclaration
QXmlStreamNotationDeclaration
QXmlStreamReader
QXmlStreamWriter