Seperation of Concerns (SoC): https://en.wikipedia.org/wiki/Separation_of_concerns There are design approaches that go further, but SoC is a good place to start.

@SGaist Thanks for the suggestion! I will try :)

Hi, i was experiencing the same strange thing... i was using Qt headers and non Qt headers, and placing before the Qt headers seemed to have solved the problem.

Hello, Both inputs are highly appreciated. I understand better how, when and why should I choose pointers over refs. I'm still reading some stuff here and there on how to produce some good code. Memory management has always been a doozy matter in C++ and i just can't get this Stroustrup quote out of my head : "C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do it blows your whole leg off. ". Thanks again for replying so quickly, I will apply everything i've learned here on my work asap. Best regards.