Note that while the Qt QML module provides the language and infrastructure for QML applications, the Qt Quick module provides many visual components, model-view support, an animation framework, and much more for building user interfaces.
If you're new to QML and Qt Quick, see QML Applications for an introduction to writing QML applications.
The QML types of the module are available through the
QtQml import. To use the types, add the following import statement to your .qml file:
find_package() command to locate the needed module component in the
find_package(Qt6 REQUIRED COMPONENTS Qml) target_link_libraries(mytarget PRIVATE Qt6::Qml)
For more details, see the Build with CMake overview.
To provide foreign QML type support for a non-QML library, locate the
QmlIntegration module as follows:
find_package(Qt6 REQUIRED COMPONENTS QmlIntegration) target_link_libraries(mytarget PRIVATE Qt6::QmlIntegration)
See qt6_generate_foreign_qml_types for details.
To configure the module for building with qmake, add the module as a value of the
QT variable in the project's .pro file:
QT += qml
The Qt QML module contains the QML framework and important QML types used in applications. The constructs of QML are described in the The QML Reference.
In addition to the QML Value Types, the module comes with the following QML object types:
The Qt global object provides useful enums and functions for various QML types.
New in Qt 5.1, the model types are moved to a submodule,
QtQml.Models. The Qt QML Models page has more information.
These sections are from The QML Reference.
Further information for writing QML applications:
Qt QML is available under commercial licenses from The Qt Company. In addition, it is available under free software licenses. Since Qt 5.4, these free software licenses are GNU Lesser General Public License, version 3, or the GNU General Public License, version 2. See Qt Licensing for further details.
Furthermore Qt QML in Qt 6.4.1 may contain third party modules under following permissive licenses:
BSD 2-clause "Simplified" License