how can i mantain a specific proportion while resizing a window?

Question

I made a game on python with a fullscreen button, how can I allow window resize when not fullscreen without changing the width/height proportions? Also how can I set the proportions to avoid problems if someone put fullscreen in a monitor with proportions different from 16/9?

Answer 1

You can't. The screen resolution depends on the hardware. Not every hardware supports every resolution. You have to write an application that can handle different display resolutions. e.g.: Scale Everything On Pygame Display Surface.