QTimer can only be used with threads started with QThread

[saman_artorious]

1) What class is that code in?
2) Where in your code is the class instance from 1) created?
3) Show how this 'where' from 2) relates to the threads in your code.

I updated my previous post. You may have a look at the updated code.
about question No. 2, every object is defined in main: like for the above case:

fuelSys *fue.. = new Fue...()

about question 3), I did not define my objects as QThreads, They are simply OBJECTS Inheriting QObject only, as it enables the objects to communicate
via emission and reception.

So, you have any idea how I can make all singleShots inside my objects work?

[wysota]

Did you remember to create a QApplication object?

[amleto]

I updated my previous post. You may have a look at the updated code.

about question No. 2, every object is defined in main: like for the above case:

Unusual. Please show your main.