Cannot load library but only on Windows

t.vanbesien

Hi,

I'm trying to build a C++ plugin and have it run on Windows and Linux.

On Linux I am able to:

Build the plugin in Qt Creator
Use the plugin when building an application with Qt Design Studio by setting the importPaths property of the .qmlproject file.

However, when I try to do the same thing on Windows, it doesn't work. I can build the plugin in Qt Creator, and run the project in Qt Creator too, using the plugin. So the project works. But when running it via Qt Design Studio I get the following error:

14:19:27: Starting E:\Qt\Tools\QtDesignStudio\qt6_design_studio_reduced_version\bin\qml2puppet-4.6.2.exe --qml-runtime -I C:/Users/tvanbesi/Desktop/bobink/Bobink/. -I C:/Users/tvanbesi/Desktop/bobink/Bobink-Release/qml --apptype widget C:/Users/tvanbesi/Desktop/bobink/Bobink/BobinkContent/App.qml...
QML debugging is enabled. Only use this in a safe environment.
Info: Starting QML Runtime
Warning: QQmlApplicationEngine failed to load component
Warning: file:///C:/Users/tvanbesi/Desktop/bobink/Bobink/BobinkContent/App.qml:5:1: Cannot load library C:\Users\tvanbesi\Desktop\bobink\Bobink-Release\qml\BobinkMachineModel\bobink_machine_model_plugin.dll: The specified module could not be found.
qml: Did not load any objects, exiting.

It says the specified module could not be found. But it is there when I check.

I'm confused as to why it works on Linux but not on Windows following the same steps, rebuilding everything, setting the importPaths etc. More confused as to why Qt Creator is able to load the plugin and run the app but not Qt Design Studio, but only on Windows. So the plugin works, for some reason Qt Design Studio is unable to find it.

I don't have errors in the Qt Design Studio interface, the QML linter isn't complaining about the library being missing or anything.

I am using Qt version 6.8.0 for Qt Creator and Qt Design Studio (no way to change the kit in Qt Design Studio anyway) on both platforms.

Please help!

t.vanbesien

Okay so it seems that the problem is the compiler not being the same in Qt Creator than in Qt Design Studio. My Qt Creator kit on Windows is using MinGW but it's not compatible with whatever Qt Design Studio is using.

Does someone know how to proceed?