Qt Reference Pages

• All C++ Classes: If you know the name of the class you want, find it here.

• All Classes by Module: A list of all C++ API components in Qt

• All Modules: A list of all modules in Qt 6.

• All Namespaces: A Qt namespace contains enum types, functions, and sometimes classes.

• All QML Modules: A list of all QML modules in Qt.

• All QML Types: A list of QML types in this Qt release.

• Annotated Class List: If you don't know the name of the class you want, but you know what the class should do, you might try looking here.

• Groups Of Related Classes: If you know what kind of class you want (GUI, painting, I.O, etc), look here.

• Inheritance Hierarchy: The C++ class inheritance hierarchy for all classes in the Qt API.

• Obsolete Classes: Classes and members marked obsolete that should not be used in new code.

• Obsolete QML Types: A list of obsolete QML types that should not be used in new code.

• <QtAlgorithms>: The <QtAlgorithms> header includes the generic, template-based algorithms.

• <QtCompilerDetection>: The <QtCompilerDetection> header file includes various compiler-specific macros.

• <QtEndian>: The <QtEndian> header provides functions to convert between little and big endian representations of numbers.

• <QtGlobal>: The <QtGlobal> header file includes an assortment of other headers.

• <QtMath>: The <QtMath> header file provides various math functions.

• <QtProcessorDetection>: The <QtProcessorDetection> header file includes various architecture-specific macros.

• <QtSystemDetection>: The <QtSystemDetection> header file includes various platfrom-specific macros.

• All Functions and Macros: All documented Qt functions listed alphabetically with a link to where each one is declared.

• qfloat16: Provides 16-bit floating point support.

• The QML Reference

• Qt Creator

• Qt Linguist

• Qt Designer

• qmake

• qdoc

• Build with CMake

There are a number of value-add modules provided by the Qt Company. See Qt Features and Qt Pricing for more information.

• Qt for Android: Provides information about Android support in Qt.

• Qt for Embedded Linux: Provides information about Embedded Linux support in Qt.

• Qt for INTEGRITY: Platform support for INTEGRITY.

• Qt for Linux/X11: Platform support for Linux/X11.

• Qt for QNX: Platform support for QNX is described here.

• Qt for WebAssembly: Runs Qt applications in a secure sandbox in the browser.

• Qt for Windows: Platform support for Windows.

• Qt for iOS: Provides insight into Qt's iOS port and how to use it.

• Qt for macOS: Platform support for macOS.

• Qt for webOS: Platform Support for webOS OSE.