https://bugs.winehq.org/show_bug.cgi?id=52223
--- Comment #2 from terinjokes@gmail.com --- There's a few applications I'm aware of that use this in their application manifest. Rufus uses it when displaying filenames in the UI. Cataclysm-DDA and Filmulator being cross-platform applications use it to display internationalized strings.
The application I'm working on, Mixere[1], uses this functionality to support UTF-8 to be able to open files with characters outside the legacy code page, and display UTF-8 strings in the UI.
As this is also the listed alternative to Boost.Nowide[2], so I would not be surprised to learn of more applications in the future.
[1]: https://github.com/terinjokes/mixere [2]: https://www.boost.org/doc/libs/master/libs/nowide/doc/html/index.html#altern...