Design studio and Creator for Device creation (rPi/imx6 etc...) c++ backend issue

deleted130

Hello,

I'm building my ui with design studio 1.4, and then using creator 4.12 to create my backend.
I am deploying app via boot2qt.
It works fine, I followed the various webinars and documents like :

https://doc.qt.io/qt-5/qtqml-cppintegration-overview.html
and
https://doc.qt.io/qtdesignstudio/quick-converting-ui-projects.html

My problem comes after I attached the backend in creator. If i want to modify the UI again in design studio, the import in the qml file that is linked to the qmlRegisterType<> in my main.cpp is not found of course, it is only found in creator.
And thus, design studio doesn't render the qml file because of the error, so I cannot edit graphically.

So what would be the best workflow?

completely finish the ui, then go in creator and doesn't look back or make only minor adjustements via the text editor?
find a way to tell design studio that the backend component exists and it can use it? (I would prefer this)

Basically I have in main.cpp:

qmlRegisterType<BackEnd>("dt.backend", 1, 0, "BackEnd");

and in the qml loaded by the engine

...
import dt.backend 1.0 // QML module not found

Item {
    id: mainPage
    width: 1024
    height: 600

    BackEnd {
        id: backend
    }
...

If anyone has an idea that would be awesome.
Thank you.

Edit:
Could this be what I am looking for?
https://doc.qt.io/qt-5/qtqml-modules-qmldir.html

Thomas Hartmann

The simplest solution is to create a simple QML mockup for your C++ backend.
A simple example for this approach is the welcome page for Qt Design Studio: https://github.com/qt-creator/qt-creator/tree/master/src/plugins/studiowelcome/qml/welcomepage.

In your case mockdata would contain a simple QML stub for dt.backend.

deleted130

Hello Thomas,

Thank you for your reply. I'll try this approach.

Best Regards.