Access to QML global context properties

[davidljung]

I think it isn't possible with Spix currently to access global context properties (correct me if I'm wrong).
This would be a useful feature.
I'm not aware of a work-around currently as I don't think QML JS code can access context properties given their string name.
(possibly there is a way to do this from C++ (?) and use invokeMethod() to call a Javascript which uses QML to call a Q_INVOKEABLE C++ function to lookup the context property by name..?)