#include <SFML/Window/WindowBase.hpp> #include <type_traits> static_assert(!std::is_copy_constructible_v<sf::WindowBase>); static_assert(!std::is_copy_assignable_v<sf::WindowBase>); static_assert(!std::is_nothrow_move_constructible_v<sf::WindowBase>); static_assert(!std::is_nothrow_move_assignable_v<sf::WindowBase>);