All Classes
This is a list of all Qt 5 classes. The following pages contain different API listings in different categories:
- All Functions
- All Namespaces
- All Classes by Module
- Obsolete Classes
- New Classes and Functions in Qt 5.9
For more reference pages including QML types, visit Qt Reference Pages.
A B C D E F G H I J K L M N O P Q R S T U V W X
- A
- QAbstractAnimation
- QAbstractButton
- QAbstractEventDispatcher
- QAbstractGraphicsShapeItem
- QAbstractItemDelegate
- QAbstractItemModel
- QAbstractItemView
- QAbstractListModel
- QAbstractNativeEventFilter
- QAbstractNetworkCache
- QAbstractOpenGLFunctions
- QAbstractPrintDialog
- QAbstractProxyModel
- QAbstractScrollArea
- QAbstractSlider
- QAbstractSocket
- QAbstractSpinBox
- QAbstractState
- QAbstractTableModel
- QAbstractTextDocumentLayout
- QAbstractTransition
- QAccessible
- QAccessibleActionInterface
- QAccessibleEditableTextInterface
- QAccessibleEvent
- QAccessibleInterface
- QAccessibleObject
- QAccessiblePlugin
- QAccessibleStateChangeEvent
- QAccessibleTableCellInterface
- QAccessibleTableInterface
- QAccessibleTableModelChangeEvent
- QAccessibleTextCursorEvent
- QAccessibleTextInsertEvent
- QAccessibleTextInterface
- QAccessibleTextRemoveEvent
- QAccessibleTextSelectionEvent
- QAccessibleTextUpdateEvent
- QAccessibleValueChangeEvent
- QAccessibleValueInterface
- QAccessibleWidget
- QAction
- QActionEvent
- QActionGroup
- QAnimationGroup
- QApplication
- QAssociativeIterable
- QAtomicInt
- QAtomicInteger
- QAtomicPointer
- QAuthenticator
- B
- QBackingStore
- QBasicTimer
- QBitArray
- QBitmap
- QBoxLayout
- QBrush
- QBuffer
- QButtonGroup
- QByteArray
- QByteArrayList
- QByteArrayMatcher
- C
- QCache
- QCalendarWidget
- QChar
- QCheckBox
- QChildEvent
- QClipboard
- QCloseEvent
- QCocoaNativeContext
- QCocoaWindowFunctions
- QCollator
- QCollatorSortKey
- QColor
- QColorDialog
- QColormap
- QColumnView
- QComboBox
- QCommandLineOption
- QCommandLineParser
- QCommandLinkButton
- QCommonStyle
- QCompleter
- QConicalGradient
- QContextMenuEvent
- QContiguousCache
- QCoreApplication
- QCryptographicHash
- QCursor
- D
- QDataStream
- QDataWidgetMapper
- QDate
- QDateEdit
- QDateTime
- QDateTimeEdit
- QDBusAbstractAdaptor
- QDBusAbstractInterface
- QDBusArgument
- QDBusConnection
- QDBusConnectionInterface
- QDBusContext
- QDBusError
- QDBusInterface
- QDBusMessage
- QDBusObjectPath
- QDBusPendingCall
- QDBusPendingCallWatcher
- QDBusPendingReply
- QDBusReply
- QDBusServer
- QDBusServiceWatcher
- QDBusSignature
- QDBusUnixFileDescriptor
- QDBusVariant
- QDBusVirtualObject
- QDeadlineTimer
- QDebug
- QDebugStateSaver
- QDesktopServices
- QDesktopWidget
- QDial
- QDialog
- QDialogButtonBox
- QDir
- QDirIterator
- QDirModel
- QDnsDomainNameRecord
- QDnsHostAddressRecord
- QDnsLookup
- QDnsMailExchangeRecord
- QDnsServiceRecord
- QDnsTextRecord
- 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
- QEglFSFunctions
- QEGLNativeContext
- QElapsedTimer
- QEnableSharedFromThis
- QEnterEvent
- QErrorMessage
- QEvent
- QEventLoop
- QEventLoopLocker
- QEventTransition
- QException
- QExplicitlySharedDataPointer
- QExposeEvent
- F
- QFile
- QFileDevice
- QFileDialog
- QFileIconProvider
- QFileInfo
- QFileOpenEvent
- QFileSelector
- QFileSystemModel
- QFileSystemWatcher
- QFinalState
- QFlag
- QFlags
- QFocusEvent
- QFocusFrame
- QFont
- QFontComboBox
- QFontDatabase
- QFontDialog
- QFontInfo
- QFontMetrics
- QFontMetricsF
- QFormLayout
- QFrame
- QFuture
- QFutureIterator
- QFutureSynchronizer
- QFutureWatcher
- G
- QGenericArgument
- QGenericMatrix
- QGenericPlugin
- QGenericPluginFactory
- QGenericReturnArgument
- QGesture
- QGestureEvent
- QGestureRecognizer
- QGLBuffer
- QGLColormap
- QGLContext
- QGLFormat
- QGLFramebufferObject
- QGLFramebufferObjectFormat
- QGLFunctions
- QGlobalStatic
- QGLPixelBuffer
- QGLShader
- QGLShaderProgram
- QGLWidget
- QGLXNativeContext
- 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
- QGraphicsTextItem
- QGraphicsTransform
- QGraphicsView
- QGraphicsWidget
- QGridLayout
- QGroupBox
- QGuiApplication
- H
- QHash
- QHashIterator
- QHBoxLayout
- QHeaderView
- QHelpEvent
- QHideEvent
- QHistoryState
- QHostAddress
- QHostInfo
- QHoverEvent
- QHstsPolicy
- QHttpMultiPart
- QHttpPart
- I
- QIcon
- QIconDragEvent
- QIconEngine
- QIconEnginePlugin
- QIdentityProxyModel
- QImage
- QImageIOHandler
- QImageIOPlugin
- QImageReader
- QImageWriter
- QInputDialog
- QInputEvent
- QInputMethod
- QInputMethodEvent
- QInputMethodQueryEvent
- QIntValidator
- QIODevice
- QItemDelegate
- QItemEditorCreator
- QItemEditorCreatorBase
- QItemEditorFactory
- QItemSelection
- QItemSelectionModel
- QItemSelectionRange
- L
- QLabel
- QLatin1Char
- QLatin1String
- QLayout
- QLayoutItem
- QLCDNumber
- QLibrary
- QLibraryInfo
- QLine
- QLinearGradient
- QLineEdit
- QLineF
- QLinkedList
- QLinkedListIterator
- QList
- QListIterator
- QListView
- QListWidget
- QListWidgetItem
- QLocale
- QLocalServer
- QLocalSocket
- QLockFile
- QLoggingCategory
- M
- QMacCocoaViewContainer
- QMacNativeWidget
- QMainWindow
- QMap
- QMapIterator
- QMargins
- QMarginsF
- QMatrix
- QMatrix4x4
- QMdiArea
- QMdiSubWindow
- QMenu
- QMenuBar
- QMessageAuthenticationCode
- QMessageBox
- QMessageLogContext
- QMessageLogger
- QMetaClassInfo
- QMetaEnum
- QMetaMethod
- QMetaObject
- QMetaProperty
- QMetaType
- QMimeData
- QMimeDatabase
- QMimeType
- QModelIndex
- QMouseEvent
- QMouseEventTransition
- QMoveEvent
- QMovie
- QMultiHash
- QMultiMap
- QMutableHashIterator
- QMutableLinkedListIterator
- QMutableListIterator
- QMutableMapIterator
- QMutableSetIterator
- QMutableVectorIterator
- QMutex
- QMutexLocker
- N
- QNativeGestureEvent
- QNetworkAccessManager
- QNetworkAddressEntry
- QNetworkCacheMetaData
- QNetworkConfiguration
- QNetworkConfigurationManager
- QNetworkCookie
- QNetworkCookieJar
- QNetworkDatagram
- QNetworkDiskCache
- QNetworkInterface
- QNetworkProxy
- QNetworkProxyFactory
- QNetworkProxyQuery
- QNetworkReply
- QNetworkRequest
- QNetworkSession
- O
- QObject
- QObjectCleanupHandler
- QOffscreenSurface
- QOpenGLBuffer
- QOpenGLContext
- QOpenGLContextGroup
- QOpenGLDebugLogger
- QOpenGLDebugMessage
- QOpenGLExtraFunctions
- QOpenGLFramebufferObject
- QOpenGLFramebufferObjectFormat
- QOpenGLFunctions
- QOpenGLFunctions_1_0
- QOpenGLFunctions_1_1
- QOpenGLFunctions_1_2
- QOpenGLFunctions_1_3
- QOpenGLFunctions_1_4
- QOpenGLFunctions_1_5
- QOpenGLFunctions_2_0
- QOpenGLFunctions_2_1
- QOpenGLFunctions_3_0
- QOpenGLFunctions_3_1
- QOpenGLFunctions_3_2_Compatibility
- QOpenGLFunctions_3_2_Core
- QOpenGLFunctions_3_3_Compatibility
- QOpenGLFunctions_3_3_Core
- QOpenGLFunctions_4_0_Compatibility
- QOpenGLFunctions_4_0_Core
- QOpenGLFunctions_4_1_Compatibility
- QOpenGLFunctions_4_1_Core
- QOpenGLFunctions_4_2_Compatibility
- QOpenGLFunctions_4_2_Core
- QOpenGLFunctions_4_3_Compatibility
- QOpenGLFunctions_4_3_Core
- QOpenGLFunctions_4_4_Compatibility
- QOpenGLFunctions_4_4_Core
- QOpenGLFunctions_4_5_Compatibility
- QOpenGLFunctions_4_5_Core
- QOpenGLFunctions_ES2
- QOpenGLPaintDevice
- QOpenGLPixelTransferOptions
- QOpenGLShader
- QOpenGLShaderProgram
- QOpenGLTexture
- QOpenGLTextureBlitter
- QOpenGLTimeMonitor
- QOpenGLTimerQuery
- QOpenGLVersionProfile
- QOpenGLVertexArrayObject
- QOpenGLWidget
- QOpenGLWindow
- QOperatingSystemVersion
- P
- QPagedPaintDevice
- QPageLayout
- QPageSetupDialog
- QPageSize
- QPaintDevice
- QPaintDeviceWindow
- QPaintEngine
- QPaintEngineState
- QPainter
- QPainterPath
- QPainterPathStroker
- QPaintEvent
- QPair
- QPalette
- QPanGesture
- QParallelAnimationGroup
- QPauseAnimation
- QPdfWriter
- QPen
- QPersistentModelIndex
- QPicture
- QPictureFormatPlugin
- QPictureIO
- QPinchGesture
- QPixelFormat
- QPixmap
- QPixmapCache
- QPlainTextDocumentLayout
- QPlainTextEdit
- QPlatformSurfaceEvent
- QPluginLoader
- QPoint
- QPointer
- QPointF
- QPointingDeviceUniqueId
- QPolygon
- QPolygonF
- QPrintDialog
- QPrintEngine
- QPrinter
- QPrinterInfo
- QPrintPreviewDialog
- QPrintPreviewWidget
- QProcess
- QProcessEnvironment
- QProgressBar
- QProgressDialog
- QPropertyAnimation
- QProxyStyle
- QPushButton
- R
- QRadialGradient
- QRadioButton
- QRasterPaintEngine
- QRasterWindow
- QRawFont
- QReadLocker
- QReadWriteLock
- QRect
- QRectF
- QRegExp
- QRegExpValidator
- QRegion
- QRegularExpression
- QRegularExpressionMatch
- QRegularExpressionMatchIterator
- QRegularExpressionValidator
- QResizeEvent
- QResource
- QRgba64
- QRubberBand
- QRunnable
- S
- QSaveFile
- QScopedArrayPointer
- QScopedPointer
- QScopedValueRollback
- QScreen
- QScrollArea
- QScrollBar
- QScroller
- QScrollerProperties
- QScrollEvent
- QScrollPrepareEvent
- QSctpServer
- QSctpSocket
- QSemaphore
- QSequentialAnimationGroup
- QSequentialIterable
- QSessionManager
- QSet
- QSetIterator
- QSettings
- QSharedData
- QSharedDataPointer
- QSharedMemory
- QSharedPointer
- QShortcut
- QShortcutEvent
- QShowEvent
- QSignalBlocker
- QSignalMapper
- QSignalSpy
- QSignalTransition
- QSize
- QSizeF
- QSizeGrip
- QSizePolicy
- QSlider
- QSocketNotifier
- QSortFilterProxyModel
- QSpacerItem
- QSpinBox
- QSplashScreen
- QSplitter
- QSplitterHandle
- QSqlDatabase
- QSqlDriver
- QSqlDriverCreator
- QSqlDriverCreatorBase
- QSqlDriverPlugin
- QSqlError
- QSqlField
- QSqlIndex
- QSqlQuery
- QSqlQueryModel
- QSqlRecord
- QSqlRelation
- QSqlRelationalDelegate
- QSqlRelationalTableModel
- QSqlResult
- QSqlTableModel
- QSslCertificate
- QSslCertificateExtension
- QSslCipher
- QSslConfiguration
- QSslDiffieHellmanParameters
- QSslEllipticCurve
- QSslError
- QSslKey
- QSslPreSharedKeyAuthenticator
- QSslSocket
- QStack
- QStackedLayout
- QStackedWidget
- QStandardItem
- QStandardItemEditorCreator
- QStandardItemModel
- QStandardPaths
- QState
- QStateMachine
- QStaticByteArrayMatcher
- QStaticPlugin
- QStaticText
- QStatusBar
- QStatusTipEvent
- QStorageInfo
- QString
- QStringList
- QStringListModel
- QStringMatcher
- QStringRef
- QStyle
- QStyledItemDelegate
- QStyleFactory
- QStyleHintReturn
- QStyleHintReturnMask
- QStyleHintReturnVariant
- QStyleHints
- QStyleOption
- QStyleOptionButton
- QStyleOptionComboBox
- QStyleOptionComplex
- QStyleOptionDockWidget
- QStyleOptionFocusRect
- QStyleOptionFrame
- QStyleOptionGraphicsItem
- QStyleOptionGroupBox
- QStyleOptionHeader
- QStyleOptionMenuItem
- QStyleOptionProgressBar
- QStyleOptionRubberBand
- QStyleOptionSizeGrip
- QStyleOptionSlider
- QStyleOptionSpinBox
- QStyleOptionTab
- QStyleOptionTabBarBase
- QStyleOptionTabWidgetFrame
- QStyleOptionTitleBar
- QStyleOptionToolBar
- QStyleOptionToolBox
- QStyleOptionToolButton
- QStyleOptionViewItem
- QStylePainter
- QStylePlugin
- QSupportedWritingSystems
- QSurface
- QSurfaceFormat
- QSwipeGesture
- QSyntaxHighlighter
- QSysInfo
- QSystemSemaphore
- QSystemTrayIcon
- T
- QTabBar
- QTabletEvent
- QTableView
- QTableWidget
- QTableWidgetItem
- QTableWidgetSelectionRange
- QTabWidget
- QTapAndHoldGesture
- QTapGesture
- QTcpServer
- QTcpSocket
- QTemporaryDir
- QTemporaryFile
- QTouchEventSequence (QTest)
- QTestEventList
- QTextBlock
- QTextBlockFormat
- QTextBlockGroup
- QTextBlockUserData
- QTextBoundaryFinder
- QTextBrowser
- QTextCharFormat
- QTextCodec
- 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
- QTimeZone
- QToolBar
- QToolBox
- QToolButton
- QToolTip
- QTouchDevice
- QTouchEvent
- QTransform
- QTranslator
- QTreeView
- QTreeWidget
- QTreeWidgetItem
- QTreeWidgetItemIterator
- V
- QValidator
- QVariant
- QVariantAnimation
- QVarLengthArray
- QVBoxLayout
- QVector
- QVector2D
- QVector3D
- QVector4D
- QVectorIterator
- QVersionNumber
- W
- QWaitCondition
- QWeakPointer
- QWGLNativeContext
- QWhatsThis
- QWhatsThisClickedEvent
- QWheelEvent
- QWidget
- QWidgetAction
- QWidgetItem
- QWindow
- QWindowStateChangeEvent
- QWindowsWindowFunctions
- QWinEventNotifier
- QWizard
- QWizardPage
- QWriteLocker
- X
- QXcbWindowFunctions
- QXmlAttributes
- QXmlContentHandler
- QXmlDeclHandler
- QXmlDefaultHandler
- QXmlDTDHandler
- QXmlEntityResolver
- QXmlErrorHandler
- QXmlInputSource
- QXmlLexicalHandler
- QXmlLocator
- QXmlNamespaceSupport
- QXmlParseException
- QXmlReader
- QXmlSimpleReader
- QXmlStreamAttribute
- QXmlStreamAttributes
- QXmlStreamEntityDeclaration
- QXmlStreamEntityResolver
- QXmlStreamNamespaceDeclaration
- QXmlStreamNotationDeclaration
- QXmlStreamReader
- QXmlStreamWriter
See also All Modules and Obsolete Classes.