- c++
learn c++ from game development : https://books.google.com/books?id=XAfXAwAAQBAJ&pg=PA214&lpg=PA214&dq=SendEvent+to+c%2B%2B+class&source=bl&ots=NpViEUChC3&sig=qtt8g6uK0RJrwDKEtFoX5I8hDdY&hl=en&sa=X&ved=2ahUKEwjf97fm2ojfAhWQLXwKHVxBCL0Q6AEwBXoECAkQAQ#v=onepage&q=SendEvent%20to%20c%2B%2B%20class&f=false