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Assigning to a pure QML list property of a custom registered gadget/value type fails:

Could not create a QML sequence object for QList<KScreen::OsdAction>

The type is registered as follow:

qmlRegisterType<OsdAction>("org.kde.KScreen", 1, 0, "osdAction");

and the property is defined as you'd expect it:

property list<osdAction> actions

Assignment can be done from C++ or from another var property in QML — the result is the same:

rootObject->setProperty("actions", QVariant::fromValue(OsdAction::availableActions()));

where availableActions returns a QList as described in the error message above.

Meanwhile, a singular property works just fine:

    property osdAction action

    onActionChanged: {
        print("Action", action); // prints members
    }

rootObject->setProperty("action", QVariant::fromValue(OsdAction::availableActions().first()));

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