Qt State Machine

The State Machine framework provides classes for creating and executing state graphs.

Getting Started

To include the definitions of the module's classes, use the following directive:

#include <QStateMachine>

To import the QML types into your application, use the following import statement in your .qml file:

import QtQml.StateMachine

To link against the module:

When using CMake add to CMakeLists.txt:

find_package(Qt6 COMPONENTS StateMachine REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::StateMachine)

When using qmake add to the project .pro file:

QT += statemachine

Articles and Guides

• Qt State Machine Overview
• Qt State Machine C++ Guide
• Qt State Machine QML Guide

Examples

• Qt State Machine Examples

Reference

• C++ Classes and Namespaces
• QML Types

Module Evolution

Changes to Qt State Machine lists important changes in the module API and functionality that were done for the Qt 6 series of Qt.

Licenses and Trademarks

The Qt State Machine module is available under commercial licenses from The Qt Company. In addition, it is available under free software licenses: The GNU Lesser General Public License, version 3, or the GNU General Public License, version 2. See Qt Licensing for further details.

Furthermore, Qt State Machine in Qt 6.2.13 may contain third party modules under following permissive licenses: