Summary of the issue

Qt Creator sample application qml-i18n (QML Examples - Internationalization) uses Qt core’s language file auto loading mechanism. The .qm files are placed under /i18n directory of Qt resource system and to match the automatic loading path ( <main qml’s base pash>/i18n ), the sample application places main qml file to the route path by specifying NO_RESOURCE_TARGET_PATH to the qt_add_qml_module.

This technique works but is bit tricky way. I think place .qm files under main qml’s base directly is better.

Reproducible steps

1. At Qt Creator, load sample application "QML Examples - Internationalization"
2. Check the CMakeLists.txt

Expected behavior

qt_add_translations function in CMakeLists.txt load i18n files under root qml's base directly by specifying RESOURCE_PREFIX option. Example:

qt_add_translations(qmli18n
    TS_FILES
    i18n/base.ts
    i18n/qml_en.ts
    i18n/qml_en_AU.ts
    i18n/qml_fr.ts
    i18n/qml_ja.ts
    RESOURCE_PREFIX  i18n
)

qt_add_qml_module is defined as usual.

qt_add_qml_module(qmli18n
    URI i18n
    VERSION 1.0
    QML_FILES
        qml-i18n.qml
) 

Actual Result

qt_add_qml_module has option NO_RESOURCE_TARGET_PATH to place root qml file into qrc root directly. It works but doesn't look a good practice as non multi langage app won't apply this option to root qml file.

Note

There are miltiple inconsistency for multi-language support in Qt6. I took a note for it.

About QML Multi-language support inconsistency - Qt Site Japan - Global Site