If you are willing to code your own GUI widgets, it's also pretty easy to do cross-platform. You can opt for OpenGL or similar and a little glue for the various

If you are willing to code your own GUI widgets, it's also pretty easy to do cross-platform. You can opt for OpenGL or similar and a little glue for the various platforms. If you slowly grow a collection of just your favorite widtes, that's totally doable. Will grow to maybe 10-15K lines of C code. That's a lot of explicit code, but on the upside the code will be more maintainable compared to all the boilerplate the would be required to bend a super-general library to fit your requirements. I've done a few OpenGL toy apps in the last months, and one commercial project that includes text widgets, editing, table views, buttons, scrollbars and so on. It also scales freely. It's not that hard, and the next time will be even easier.