Is there a guide for exit code messages?

[wysota]

But I'm using QT for building windows applications....

But it's Windows which returns the code.

It is as I have a car, the fuel tank has no filter, but normally fuel has impurities.
After a kilometers of driving the motor is broken, Who is responsible for the failure?...

The example is inadequate. It's more like blaming the car producer for traffic on roads. Sure you are waiting in the traffic in the car made by this producer but sitting in another car in the same place would yield the same result - you'd still be in the traffic jam, the only responsibility of the car producer (any car producer) is that you are driving his car instead of using mass transit.

[tonnot]

mmm.
I keep on thinking that if my car has a fuel-filter (that costs only 1 €), I'm going to have better opinion of the manufacturer.

[squidge]

Well, QtCreator is open-source, if the "manufacturer" is unwilling to do it, you can always do it yourself.

Kinda like you could always buy the fuel filter and fit it yourself, even if the manufacturer didn't supply it by default.