AFAIK, the only complete desktop GUI option for Rust that is viable for large, professional apps is gtk-rs. There are many promising up and coming GUIs for hobby projects, but none I've seen are robust enough (yet) to support all needed widgets of a pro app.
Accessibility support is the big killer for many of them, though even GTK has issues with that on Mac OS, so Qt would be a big win.
Or I guess you could put a Rust wasm app into electron also and have accessibility support that way. Has to be one that uses a real DOM and not just renders to a canvas or WebGL though.
Ahh...very cool, thx. Didn't realize it was that capable and was not aware of this "demo". I will check it out as I need to write a GUI soon (and would prefer to use Rust).