I'm working on a QML Plugin. It works fine when using regular QML files from the qml plugins dir. Now I want to use the qml resrouce compiler for faster qml start:

qtquick_compiler_add_resources(myplugin_qrc myplugin.qrc )

add to my plugin

add_library( ${PROJECT_NAME} SHARED ... ${myplugin_qrc})

And I can successfully load my first file

Loader {
    anchors.fill: parent
    source: "qrc:/qml/MyPlugin/MyPlugin.qml"
}

But every other qml component that I use inside MyPlugin.qml (Like a Background.qml) fails to load because it then tries to look it up in the regular path.

qrc:/qml/MyPlugin/MyPlugin.qml:43:5: Type Background unavailable
   Loc: [qrc:/qml/MyPlugin/MyPlugin.qml:43]
file:///C:/Qt/5.14.2/msvc2017_64/qml/ScreenPlay/MyPlugin/Background.qml: No such file or directory
   Loc: [file:///C:/Qt/5.14.2/msvc2017_64/qml/ScreenPlay/MyPlugin/Background.qml:-1]

What I tried:

Add Q_INIT_RESOURCE(MyPluginResource); to my MyPlugin_plugin.cpp registerTypes

Add qmlDir to my qrc file.

Add relative paths to my qmlDir entries: Background 1.0 qml/MyPlugin/Background.qml

From my understanding, when using qtquick_compiler_add_resources it compiles the qml files to c++ and adds them to my dll. So I'm not sure if

engine->addImportPath(uri);

would work here.

Someone else had a similar problem, but he used the same name for the resource file. My resource file names of my app and my plugins are different. https://forum.qt.io/topic/82509/problem-using-a-qml-plugin-from-application/2

Any ideas?