Class and Function Documentation

Links to indexes and lists for finding class and function reference documentation.

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.

<QWaylandQuickExtension>	File includes macros for creating Qt Quick types that correspond to subclasses of QWaylandCompositorExtension and QWaylandObject
<QtAlgorithms>	Includes the generic, template-based algorithms
<QtCompilerDetection>	File includes various compiler-specific macros
<QtEndian>	Functions to convert between little and big endian representations of numbers
<QtGlobal>	File includes an assortment of other headers
<QtMath>	File provides various math functions
<QtProcessorDetection>	File includes various architecture-specific macros
<QtSystemDetection>	File includes various platfrom-specific macros
<qtwebenginecoreglobal.h>	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.
qfloat16	Provides 16-bit floating point support