nana VS ultimatepp

If you want to start with a smaller GUI lib (instead of the bigger ones), you could use Nana (C++ Library), see also User Works using Nana - it uses modern C++11/14/17 (instead of older C++ like wxWidgets or the external macro processor tool MOC used by Qt).

https://github.com/cnjinhao/nana Boost Software License

well, nana seems to still be developed, but it's in another branch for now: https://github.com/cnjinhao/nana/tree/develop-1.8

I’ve seen people use https://github.com/cnjinhao/nana, but the other suggestions are probably better.

I would suggest https://github.com/cnjinhao/nana . There is also https://github.com/andlabs/libui, although that is C (not C++).

I especially appreciate its one string layout method nana::form::div(), see https://github.com/cnjinhao/nana/wiki/Div-Text

For more information, you can also visit our official site: https://www.ultimatepp.org/.

Have you considered Ultimate++?

U++

You can also visit our official site for more information.

U++ (C++ framework)

The true thing is that you may find U++ framework very interesting. We created our framework to be extremely easy to use by beginners. We prepared various tutorials that will teach you how to create powerful UI applications with our technology.

Some say qt, others wxwidgets, u++, sfml, here is a video from quick search on wxwidgets and c++ for beginners https://www.youtube.com/watch?v=FOIbK4bJKS8 Choosethem depending on learning curve and where they will take you, you might learn something harder because it takes you farther to where you want to go.

U++ (C++ GUI/RAD framework) day 10 solution at github

U++ (C++ framework): https://github.com/ped7g/adventofcode/blob/main/2022-upp/09_rope_bridge/09_rope_bridge.cpp