EEPP vs IMGUI

[Enshitification]

I'm ignorant in C++, but I know a project similar to yours:

https://github.com/ocornut/imgui

I don't know anything about your library yet. How is it comparable to IMGUI?

Is it also an immediate mode GUI library?

[SpartanJ]

It's not very comparable. eepp GUI is retained mode so they're very very different, eepp GUI is more similar to Qt, if you want to compare it with any popular existing library. IMGUI is a fantastic library by the way, but it has different objectives with the tradeoffs of the immediate mode GUIs vs retained.

[Enshitification]

Qt in OpenGL/SDL2. Is it also event-driven with a main loop?

[SpartanJ]

Qt in OpenGL/SDL2

Qt has an optional OpenGL rendering backend, but no relation with SDL2.

Is it also event-driven with a main loop?

Yes, Qt does that too, although they call them signals and the main loop is hidden to the end user.