Finally i thinked of my thing and somes advices i decide to learn SFML because it's adapted to C++ and OOP. SFML seem very nice with much possibilities. The only thing is it's seem to take 90% of the ram easily but i'm still in learning process. I learn on the creator website, Mr.Gomila. Also my problem is to put window.close() at right place lol. Anyway i'm still learning. I'm still not sure about event loop but i'll practice alot for get it right