GacUI VS ultimatepp

You can try https://github.com/vczh-libraries/GacUI . It uses XML descripted UIs, which you may be familiar with as a C# developer.

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