Qt Reference Pages

Class Lists

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.

Function Lists


File includes macros for creating Qt Quick types that correspond to subclasses of QWaylandCompositorExtension and QWaylandObject


Includes the generic, template-based algorithms


File includes various compiler-specific macros


Functions to convert between little and big endian representations of numbers


File includes an assortment of other headers


File provides various math functions


File includes various architecture-specific macros


File includes various platfrom-specific macros


Helper functions for the Qt WebEngine Core module

All Functions and Macros

All documented Qt functions listed alphabetically with a link to where each one is declared.


Provides 16-bit floating point support

QML Reference

Qt Tool Manuals

Commercial Only Modules

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

Platform Reference

Qt for Android

Provides information about Android support in Qt.

Qt for Embedded Linux

Provides information about Embedded Linux support in Qt.


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.

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