[stevekemp]

https://zserge.com/posts/fenster/ is what I used when I wanted "basic graphics" in a cross-platform way.

But of course that's X11 and much simpler.

[pjmlp]

Ah, got me hooked readying the rest of the post with the "BGI and BASIC’s painting commands" reference. :)

Great overview of the whole approach you took there.