Amazing! Huge thanks for the link. That looks very promising.

I believe I have worked it out. Posting the solution here so future self can thank past self, when I go to do the same thing in a few years time. :D

#include <iostream>
#include <cstdlib>
#include <algorithm>
#include <functional>
#include <array>
#include <iostream&…

Real fullscreen means setting the .Windowed parameter to FALSE and setting any available resolution, which works perfectly. Fullscreen window means setting the .Windowed parameter to TRUE, making the window cover the entire screen at the current desktop resolution and creating a backbuffer matching…