Whether to inherit own class from QObject?

Question

Qt

I've read Schlee 4.8 (not all of it yet, only half of it) and I'm writing my first Qt program, which is also my thesis on image processing (one big powerful class).
When creating a new class through Qt Creator, I was offered to inherit the class from QObject, and I'm already confused. Gentlemen, experts, tell me, please, when it is worth doing and when not.

Answer 1

For example, if you want to use Qt signals / slots in your class, then you need to inherit from QObject