Loader: how to setSource when target qmlfile resides in qml module

Redman

Hello,

I have a Client application which imports several qml modules.

Im working on a menu bar for my application. In total I have four buttons right now. Each button is supposed to load a different qml component.
The qml components generally get imported via following code. I just provided MyQml module. For the other modules it should be the same.

engine.addImportPath(QStringLiteral(":/MyQml/imports"));

which works fine. When I do MyQml {} everything works fine and the component is displayed correctly.
All the needed qml imports are present.

            MyButton {
                id: btn1
                backgroundColor: "white"
                icon: "qrc:/icon/factory.svg"
                view: "MyQml.qml"

                onClicked: root.viewSelected(view)
            }

This button is part of the menu bar. I omited the rest of the implementation, because I think the general flow is clear.

Unfortunately, when given the raw string of MyQml.qml to the Loader I get following error qrc:/qt/qml/Client/qml/MyQml.qml: No such file or directory. Obviously qrc can not find the qml there, bc it resides in the module.

How am I supposed to reference a qml-file by string that resides in a module to be able to pass it to the Loader so its gets loaded successfully?

Axel Spoerl

The import path is irrelevant to the Loader. It's source has to be set to a valid QUrl.
If I interpret it correctly, that's :/MyQml/imports/MyQml.qml in your case.

If it's not, you can add the following to main.cpp to dump all available resource files:

#include <QDirIterator> // at the top, unless already included.

QDirIterator it(":", QDirIterator::Subdirectories);
while (it.hasNext())
    qInfo() << it.next();

Redman

@Axel-Spoerl said in Loader: how to setSource when target qmlfile resides in qml module:

The import path is irrelevant to the Loader. It's source has to be set to a valid QUrl.

If I interpret it correctly, that's :/MyQml/imports/MyQml.qml in your case.

Thank you very much!

The final solution was to import the file as following:

"qrc:/MyQml/imports/core/plugins/MyQml/qml/MyQml.qml"
qrc:/RESOURCE_PREFIX/URI/MyQml.qml

Which is concatenated from following cmake configuration:

qt_add_qml_module(${PROJECT_NAME} STATIC
    URI core.plugins.myqml
    VERSION 1.0
    RESOURCE_PREFIX myqml/imports
    SOURCES
    ...
)