[zxxon]

>> This basically assumes that there's a tree of UI objects in memory, which is the case for all mainstream toolkits as far as I know.

This is also the reason why they are a pain in the butt to use, at least from the perspective of an IMGUI advocate. Those people usually have a game development background, so they're used writing bespoke solutions for everything.

Statelessness is a strength but also a big weakness, I doubt IMGUI will ever catch on its pure form. However, tools like React provide a fairly similar experience and they do produce object trees usable for screen readers. The missing piece here is something like a lightweight DOM for C/C++ projects.