Qt Reference Pages

Class Lists

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.

All Classes

If you know the name of the class you want, find it here.

Inheritance Hierarchy

The C++ class inheritance hierarchy for all classes in the Qt API.

All Namespaces

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

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.

All QML Basic Types

A list of QML basic types in this Qt release.

All QML Types

A list of QML types in this Qt release.

Groups Of Related Classes

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

All Classes by Module

A list of all C++ API components in Qt 5

All QML Modules

A list of all QML modules in Qt 5.

All Modules

A list of all modules in Qt 5.

Function Lists

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.

Generic Algorithms

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

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.

Qt for iOS

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

Qt for Linux/X11

Platform support for Linux/X11.

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/.

Qt for Windows

Platform support for Windows.

Qt for WinRT

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

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