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All Modules

A list of all modules in Qt 5.

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Qt Essentials

Qt Essentials define the foundation of Qt on all platforms. They are available on all supported development platforms and on the tested target platforms. Except the testing modules, which will remain source compatible, these modules will remain source and binary compatible throughout Qt 5.

Essential modules are general and useful for a majority of Qt applications. A module that is used for a special purpose is considered an add-on module even if it is available on all supported platforms.

The following table lists the Qt essentials:

Module

Description

Qt Core

Core non-graphical classes used by other modules.

Qt GUI

Base classes for graphical user interface (GUI) components. Includes OpenGL.

Qt Multimedia

Classes for audio, video, radio and camera functionality.

Qt Multimedia Widgets

Widget-based classes for implementing multimedia functionality.

Qt Network

Classes to make network programming easier and more portable.

Qt QML

Classes for QML and JavaScript languages.

Qt Quick

A declarative framework for building highly dynamic applications with custom user interfaces.

Qt Quick Controls

Provides lightweight QML types for creating performant user interfaces for desktop, embedded, and mobile devices. These types employ a simple styling architecture and are very efficient.

Qt Quick Dialogs

Types for creating and interacting with system dialogs from a Qt Quick application.

Qt Quick Layouts

Layouts are items that are used to arrange Qt Quick 2 based items in the user interface.

Qt Quick Test

A unit test framework for QML applications, where the test cases are written as JavaScript functions.

The binary compatibility guarantee does not apply to Qt Quick Test. However, it will remain source compatible.

Qt SQL

Classes for database integration using SQL.

Qt Test

Classes for unit testing Qt applications and libraries.

The binary compatibility guarantee does not apply to Qt Test. However, it will remain source compatible.

Qt Widgets

Classes to extend Qt GUI with C++ widgets.

If you use qmake to build your projects, the Qt Core and Qt GUI modules are included by default. To link only against Qt Core, add the following line to your .pro file:

 
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QT -= gui

On Windows, if you do not use qmake or other build tools such as CMake, you also need to link against the qtmain library.

Qt Add-Ons

Qt Add-On modules bring additional value for specific purposes. These modules may only be available on some development platform. Many add-on modules are either feature-complete and exist for backwards compatibility, or are only applicable to certain platforms. Each add-on module specifies its compatibility promise separately.

The Qt installers include the option of downloading the add-ons. For more information, visit the Getting Started with Qt page.

The following table lists the Qt add-ons:

Module

Development Platforms

Target Platforms

Description

Active Qt

Windows

Windows

Classes for applications which use ActiveX and COM

Qt 3D

All

All

Functionality for near-realtime simulation systems with support for 2D and 3D rendering.

Qt Android Extras

All

Android

Provides platform-specific APIs for Android.

Qt Bluetooth

All

Android, iOS, Linux, macOS, and UWP (*)

Provides access to Bluetooth hardware.

Qt Concurrent

All

All (*)

Classes for writing multi-threaded programs without using low-level threading primitives.

Qt D-Bus

All

All (*)

Classes for inter-process communication over the D-Bus protocol.

Qt Gamepad

All

Android, iOS, macOS, tvOS (including the tvOS remote), Linux, Windows, and QNX

Enables Qt applications to support the use of gamepad hardware.

Qt Graphical Effects

All

All

Graphical effects for use with Qt Quick 2.

Qt Help

All

All (*)

Classes for integrating documentation into applications, similar to Qt Assistant.

Qt Image Formats

All

All

Plugins for additional image formats: TIFF, MNG, TGA, WBMP.

Qt Location

All

All

Displays map, navigation, and place content in a QML application.

Qt Mac Extras

All

macOS

Provides platform-specific APIs for macOS.

Qt NFC

All

Android and Linux (*)

Provides access to Near-Field communication (NFC) hardware.

Qt OpenGL (Deprecated)

All

All (*)

OpenGL support classes. Deprecated in favor of the QOpenGL* classes in the Qt GUI module.

Qt Platform Headers

Qt for Windows, Linux, macOS

Qt for Windows, Linux, macOS, Android (*)

Provides classes that encapsulate platform-specific information, tied to a given runtime configuration of a platform plugin.

Qt Positioning

All

Android, iOS, macOS, Linux, UWP (*).

Provides access to position, satellite and area monitoring classes.

Qt Print Support

All

All (*)

Classes to make printing easier and more portable.

Qt Purchasing

All

Android, iOS, and macOS.

Enables in-app purchase of products in Qt applications.

Qt Quick Controls 1 (Deprecated)

All

All (*)

Reusable Qt Quick based UI controls to create classic desktop-style user interfaces. Deprecated in favor of Qt Quick Controls 2, which are better and easier to use.

Qt Quick Extras

All

All (*)

Provides a specialized set of controls that can be used to build interfaces in Qt Quick.

Qt Quick Widgets

All

All (*)

Provides a C++ widget class for displaying a Qt Quick user interface.

Qt Remote Objects

All

All

Provides an easy to use mechanism for sharing a QObject's API (Properties/Signals/Slots) between processes or devices.

Qt Script (Deprecated)

All

All

Classes for making Qt applications scriptable. Deprecated in favor of the QJS* classes in the Qt QML module.

Qt SCXML

All

All

Provides classes and tools for creating state machines from SCXML files and embedding them in applications.

Qt Script Tools (Deprecated)

All

All (*)

Additional components for applications that use Qt Script.

Qt Sensors

All

Android, Qt for iOS, UWP, Mer, and QNX.

Provides access to sensor hardware and motion gesture recognition.

Qt Serial Bus

All

Windows, Linux, Boot to Qt targets, and QNX.

Provides access to serial industrial bus interface. Currently the module supports the CAN bus and Modbus protocols.

Qt Serial Port

All

Windows, Linux, macOS, and QNX.

Provides access to hardware and virtual serial ports.

Qt Speech

All

All except QNX.

Provides support for accessibility features such as text-to-speech.

Qt SVG

All

All

Classes for displaying the contents of SVG files. Supports a subset of the SVG 1.2 Tiny standard.

Qt UI Tools

All

All (*)

Classes for loading QWidget based forms created in Qt Designer dynamically, at runtime.

Qt WebChannel

All

All

Provides access to QObject or QML objects from HTML clients for seamless integration of Qt applications with HTML/JavaScript clients.

Qt WebEngine

All

Windows, Linux, and macOS.

Classes and functions for embedding web content in applications using the Chromium browser project.

Qt WebSockets

All

All

Provides WebSocket communication compliant with RFC 6455.

Qt WebView

All

Platforms with a native web engine.

Displays web content in a QML application by using APIs native to the platform, without the need to include a full web browser stack.

Qt Windows Extras

All

Windows

Provides platform-specific APIs for Windows.

Qt X11 Extras

All

Linux/X11

Provides platform-specific APIs for X11.

Qt XML

All

All (*)

C++ implementations of SAX and DOM.

This module is not required to use QXmlStreamReader and QXmlStreamWriter. They are already part of Qt Core.

Qt XML Patterns (deprecated)

All

All

Support for XPath, XQuery, XSLT and XML schema validation.

Qt Wayland Compositor

Linux

Linux and Boot to Qt targets.

Provides a framework to develop a Wayland compositor.

Add-ons available under Commercial Licenses, or GNU General Public License v3

Qt Charts

All

All

UI Components for displaying visually pleasing charts, driven by static or dynamic data models.

Qt Data Visualization

All

All

UI Components for creating stunning 3D data visualizations.

Qt Network Authorization

All

All

Provides support for OAuth-based authorization to online services.

Qt Virtual Keyboard

All

Linux and Windows desktop, and Boot to Qt targets.

A framework for implementing different input methods as well as a QML virtual keyboard. Supports localized keyboard layouts and custom visual themes.

Qt Quick WebGL

All

WebGL-enabled web browsers

Provides a platform plugin that allows streaming Qt Quick user interfaces over the network using WebGL™.

(*) The QNX status is not known.

Value-Add Modules

In addition to the modules released as part of Qt 5, the following modules and tooling build on top of the Qt libraries to provide additional value. They have their own release schedule, and are available under the commercial license.

Feature

Description

Qt Automotive Suite

A collection of software components and tools to enable development of In-Vehicle-Infotainment (IVI) systems. Built on top of the Qt for Device Creation offering and compliant with the GENIVI automotive platform architecture.

Qt for Automation

Libraries and tools for automation related domains, such as KNX, OPC UA, and MQTT.

Qt for Device Creation

Tools for fast, easy, and fully-integrated embedded device application development. Included in most other value-add solutions.

Technology Preview Features

The following features are still in development but are available as technology previews. They are licensed under Commercial Licenses, or GNU General Public License v3.

Feature

Description

Qt for WebAssembly (Technology Preview)

A platform target to compile Qt applications for the web browsers using WebAssembly.

Qt Lottie Animation (Technology Preview)

A QML API for rendering graphics and animations in JSON format, exported by the Bodymovin plugin for Adobe® After Effects.

Qt Tools

Qt Tools run on all the supported development platforms and facilitate the development and design of applications.

The following table lists the Qt tools:

Tool

Description

Qt Designer

Classes for extending Qt Designer.

Where to Go from Here

We invite you to explore the rest of Qt. We prepared overviews which help you decide which APIs to use and our examples demonstrate how to use our API.

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