Qt Reference Pages

Class Lists

All 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 5

All Modules

A list of all modules in Qt 5.

All Namespaces

A Qt namespace contains enum types, functions, and sometimes classes.

All QML Basic Types

A list of QML basic types in this Qt release.

All QML Modules

A list of all QML modules in Qt 5.

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.

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.

Groups Of Related Classes

If you know what kind of class you want (GUI, painting, I.O, etc), look here

Function Lists

16-bit Floating Point Support

The <QFloat16> header file provides 16-bit floating point support.

Generic Algorithms

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

Endian Conversion Functions

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

Global Qt Declarations

The <QtGlobal> header file includes the fundamental global declarations. It is included by most other Qt header files.

Generic Math Functions

The <QtMath> header file provides various math functions.

All Functions

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

QML Reference

Qt Tool Manuals

Value-Add Features

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 VxWorks

Platform support for VxWorks (under a commercial license).

Qt for WinRT

Provides insight into Qt's WinRT port and how to use it.

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. macOS (previously known as OS X or Mac OS X) is a UNIX platform and behaves similarly to other Unix-like platforms. The main difference is that X11 is not used as the windowing system. Instead, macOS uses its own native windowing system that is accessible through the Cocoa API. Application development on macOS is done using Xcode, which is available from https://developer.apple.com/xcode/.

© 2018 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.