All Namespaces | Qt 6.5
Description: A Qt namespace contains enum types, functions, and sometimes classes.

- Qt 6.5
- All Namespaces
- Qt 6.5.1 Reference Documentation

# All Namespaces

This is a list of the main namespaces in Qt.

QAudio | Contains enums used by the audio classes
QBinaryJson | Contains functions for converting QJsonDocument to and from JSON binary format
QBluetooth | Classes and functions related to Bluetooth
QColorConstants | Contains QColor predefined constants
QDBus | Contains miscellaneous identifiers used throughout the Qt D-Bus module
QGeoJson | Contains functions to import and export geolocated information from and to GeoJson files
QLocation | Contains miscellaneous identifiers used throughout the QtLocation module
QMqtt | Contains miscellaneous identifiers used throughout the Qt MQTT module
QNativeInterface | Contains the available native interfaces
QOpcUa | Contains miscellaneous identifiers used throughout the Qt OPC UA library
QOpcUa::NodeIds | This namespace contains enums with known node ids
QPasswordDigestor | Contains functions which you can use to generate hashes or keys
QQuickOpenGLUtils | Contains utilities for Qt Quick when used with an OpenGL backend
QQuickTest | Contains all the functions and macros related to Qt Quick Test
QScxmlExecutableContent | Contains various types used to interpret executable content in state machines
QSql | Contains miscellaneous identifiers used throughout the Qt SQL module
QSsl | Declares enums common to all SSL classes in Qt Network
QTest | Contains all the functions and declarations that are related to Qt Test
QWebSocketProtocol | Contains constants related to the WebSocket standard
Qt | Contains miscellaneous identifiers used throughout the Qt library
Qt3DAnimation | Contains classes from the Qt3DAnimation module
Qt3DCore | Contains classes that are the foundation for Qt 3D simulation framework, as well as classes that provide the ability to render using the Qt 3D framework
Qt3DCore::Quick | Contains classes used for implementing QML functionality into Qt3D applications
Qt3DExtras | Contains classes from the Qt3DExtras module
Qt3DInput | Contains classes that enable user input
Qt3DLogic | Contains classes that enable frame synchronization
Qt3DLogic::Logic | Used to import and use the module's QML types
Qt3DRender | Contains classes that enable 2D and 3D rendering
Qt3DRender::Render | Namespace used for accessing the classes Renderer and QRenderPlugin
Qt::Literals | Inline namespace declares literal operators for Qt types
Qt::Literals::StringLiterals | Declares string literal operators for Qt types
QtAndroidPrivate | Miscellaneous functions to aid Android development
QtCanBus | Some commons enums that are used in the CAN bus handling part of the QtSerialPort module
QtCoap | Contains miscellaneous identifiers used throughout the Qt CoAP module
QtConcurrent | High-level APIs that make it possible to write multi-threaded programs without using low-level threading primitives
QtFuture | Contains miscellaneous identifiers used by the QFuture class
QtLiterals | Declares literal operators for Qt types
QtProtobuf | Contains type aliases and classes needed to support QtProtobuf
QtRemoteObjects | Contains identifiers used in the Remote Objects module, as well as some functions used from code generated by the Replica Compiler (repc)
QtVirtualKeyboard | Contains enums used by the virtual keyboard classes
QtWebEngineQuick | Helper functions for the Qt WebEngine (Qt Quick) module
QtWebView | Functions that makes it easier to set-up and use the WebView