Qt Modules

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 the lifetime of the major Qt version.

  • Qt Core

    Core non-graphical classes used by other modules.

  • Qt D-Bus

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

  • Qt GUI

    Base classes for graphical user interfaces.

  • 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 dynamic applications with custom user interfaces.

  • Qt Quick Controls

    Lightweight QML types for creating performant user interfaces for desktop, embedded, and mobile devices.

  • Qt Quick Dialogs

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

  • Qt Quick Layouts

    Layouts for arranging Qt Quick items in the user interface.

  • Qt Quick Test

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

  • Qt Test

    Classes for unit testing Qt applications and libraries.

  • Qt Widgets

    Classes to extend Qt GUI with C++ widgets.

Qt Addons

Addon modules bring additional value for specific purposes. These modules may only be available on some of the development platforms.

  • Active Qt

    Classes for applications that use ActiveX and Component Object Model (COM).

  • Qt 3D

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

  • Qt 5 Core Compatibility APIs

    Qt Core APIs that were in Qt 5 but not Qt 6.

  • Qt Bluetooth

    Provides access to Bluetooth hardware.

  • Qt Charts

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

  • Qt Concurrent

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

  • Qt Data Visualization

    UI Components for creating stunning 3D data visualizations.

  • Qt Help

    Classes for integrating documentation into applications.

  • Qt Image Formats

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

  • Qt Lottie Animation

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

  • Qt OpenGL

    C++ classes that make it easy to use OpenGL in Qt applications.

  • Qt Multimedia

    A rich set of QML types and C++ classes to handle multimedia content. Also includes APIs for accessing camera hardware.

  • Qt Network Authorization

    Provides support for OAuth-based authorization to online services.

  • Qt NFC

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

  • Qt Positioning

    Provides access to position, satellite info and area monitoring classes.

  • Qt Print Support

    Classes to make printing easier and more portable.

  • Qt Quick 3D

    Provides a high-level API for creating 3D content or UIs based on Qt Quick.

  • Qt Quick Timeline

    Enables keyframe-based animations and parameterization.

  • Qt Quick Widgets

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

  • Qt Remote Objects

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

  • Qt SCXML

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

  • Qt Sensors

    Provides access to sensor hardware.

  • Qt Serial Bus

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

  • Qt Serial Port

    Provides classes to interact with hardware and virtual serial ports.

  • Qt Shader Tools

    Tools for the cross-platform Qt shader pipeline, enabling the use of graphics and compute shaders in Qt Quick and other components in the Qt ecosystem.

  • Qt SQL

    Classes for database integration using SQL.

  • Qt State Machine

    Provides classes for creating and executing state graphs.

  • Qt SVG

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

  • Qt UI Tools

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

  • Qt Wayland Compositor

    Provides a framework to develop a Wayland compositor.

  • Qt WebChannel

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

  • Qt WebEngine

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

  • Qt WebSockets

    Provides WebSocket communication compliant with RFC 6455.

  • Qt WebView

    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 Virtual Keyboard

    A framework for implementing different input methods as well as a QML virtual keyboard.

  • Qt XML

    Provides implementations of the SAX and DOM standards for XML.

  • Qt Application Manager

    A headless application manager daemon designed for embedded Linux systems with complex UIs.

  • Qt Interface Framework

    Provides a core framework and tools to implement middleware APIs, backends, and services.

Additional Qt libraries

Additional libraries are available either via the online installer or Qt Marketplace.

  • Qt Quick TreeView

    Provides a control that can be used to show a tree model in Qt Quick.

  • Qt Quick Calendar

    Provides a set of types that can be used to build calendars in Qt Quick.

  • Qt Quick MultiEffect

    Provides a Qt Quick component for fast, animated effects.

  • Qt Digital Advertising

    Provides a light-weight API to incorporate advertisements into Qt Quick applications.

  • Qt VNC Server

    Provides an API for creating a simple VNC®-compatible server with Qt.

Qt 6 LTS

Documentation for Qt 6 long-term support release.

  • Qt 6.2

    Long-term support version.

Qt 5 LTS

Documentation for Qt 5 long-term support release.

  • Qt 5.15

    Long-term support version.

Qt for Python

Python binding for Qt.

  • Qt for Python 6.3

    Official Python bindings for Qt 6.3.

  • Qt for Python 6.2

    Official Python bindings for Qt 6 LTS.

  • Qt for Python 5.15

    Official Python bindings for Qt 5.

Documentation overview

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