Hi, On Tue, Oct 24, 2023 at 4:35 PM Stefan Seefeld <ste...@seefeld.name> wrote: > So it sounds like I still don't understand what `qt_add_qml_module` is doing.
AFAIK it builds a bunch of cmake custom commands that use moc for c++ and some other tooling for qml files to extract all the type information. This then is the basis to the qmlsc, qmltc and plugin code generators (qmlRegisterType etc.). All the generated stuff is added to the backing target. I've used these steps to modernize the code base of existing projects: 1. Port the Qml code to use proper modules. This can be partially automated (https://github.com/njeisecke/qml-migration). 2. Move existing C++ code into proper qml modules, use QML_ELEMENT, QML_SINGLETON etc., remove qmlRegisterType and fix the imports in the qml files. This means quite some work and usually also comes with some restructuring of the code base. 3. Replace all context properties by QML_SINGLETON classes providing all previous context properties as typed class properties. 4. Fix all qmllint warnings. Your code will work but qmlsc won't compile it to C++. There are still lots of places in Qml that make typing and type checking hard (e.g. Loader.item can be anything) the (undocumented) "as" operator is a great help here. Also inline components are somewhat neglected as types by qmllint. 5. The hardest part: Refactor all Qml code to eliminate all "unqualified access". There is a reason why this check is not enabled in qmllint by default ;-) The scope lookup rules were a major design fault in Qml, leading to uncheckable, uncompilable and hard to maintain code. It's quite an achievement to now have tooling in Qt 6.6 that allows this iterative approach to overcome deficiencies inherently built into the Qml DNA. Kudos to the Qml team. You will finally be able to use qmllint for comprehensive type checking of the qml/c++ code base which is a huge win for code quality and maintenance. Nils _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest
