C++ pointer to Qml - is this possible?!?

[Szyk]

Hi

[[[ I waste half day for googling and trying different code. So I am not lazy when I am asking. ]]]

I have simple question whether is this possible:
Create and feed QSqlQueryModel in C++ and send it (whatever way) to Qml?
If you claim yes, then please attach prof code...

And I am not interested with expose some alone object to Qt (I have no problem with this - I can use lEngine.rootContext()->setContextProperty from main()) But I want send any number of C++ models to Qml (different models to different Qml objects).
I have problem with passing parameters to functions and to property (pointers as parameters).

Thank you and best regards
Szyk Cech