As a newbie to C++, I am having a problem finding what Header needs to be included when I search on the net or in Help and find a function I want to use.
I have an opengl program, that i simply want to add user message box that ask if they want to run it in fullscreen or not when it launches. But when I look up functions to serve this purpose in the help, I don't any reference to what header file needs to be included to use the function.