// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only

/*!
\page qt-generate-foreign-qml-types.html
\ingroup cmake-commands-qtqml

\title qt_generate_foreign_qml_types
\target qt6_generate_foreign_qml_types

\summary{Registers types from one target in a QML module.}

\include cmake-find-package-qml.qdocinc

\preliminarycmakecommand

\section1 Synopsis

\badcode
qt_generate_foreign_qml_types(
    source_target
    destination_qml_target
)

\endcode

\versionlessCMakeCommandsNote qt6_generate_foreign_qml_types()

\section1 Description

\c qt_generate_foreign_qml_types extracts types marked via QML registration
macros (like \l QML_ELEMENT) from \c source_target and registers them as foreign
types in the QML module \c destination_qml_target.

This can be useful when one wants to create a library with optional QML integration, without
depending directly on QML.

\badcode
// myclass.h
#include <QtQmlIntegration/qqmlintegration.h>

class MyClass : public QObject
{
    QML_ELEMENT
    Q_OBJECT

    // [...]
};
\endcode

\badcode
# CMakeLists.txt
qt_add_library(mylib myclass.h ...)
target_link_libraries(mylib PRIVATE Qt::Core Qt::QmlIntegration)

qt_add_qml_module(mylib_declarative
  VERSION 1.0
  URI "mylib"
  ...
)
qt_generate_foreign_qml_types(mylib mylib_declarative)
\endcode

\note In the example above, \c mylib does not depend on QtQml or QtQuick, but only on the
header-only QmlIntegration target (for the QtQmlIntegration/qqmlintegration.h header, which provides
the \c QML_ELEMENT macro).

The effect is equivalent to using \c QML_FOREIGN with custom structs in the QML library to expose
the types.
*/
