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wxWidgets is the most popular one. It's an ambitious project that allows accessing true native widgets, not just from C++ but also from other languages like Pyt

• twic 7y ago
  Someone had a go at a Rust binding of wxWidgets five years ago: https://github.com/kenz-gelsoft/wxRust https://github.com/kenz-gelsoft/wxRust As they mention, this is based on a C wrapper round wxWidgets' native C++ API, originally developed to aid in developing a Haskell binding to wxWidgets: http://wxc.sourceforge.net/ http://wxc.sourceforge.net/ The Rust binding is probably bitrotted for modern Rust, but since it's mostly generated, generating a low-level API using bindgen, which is actively maintained, and then a high-level API using a Python script of its own, it might be fairly easy to resurrect. bindgen has got pretty good at converting C++ APIs, so it might be worth trying it on wxWidgets' native API, too. I have no plans to write a GUI application in Rust myself, but i would love for there to be a good option for other people to write native GUI apps in Rust. As many other commenters have noted, cross-platform synthetic GUIs never look or behave quite right.