Re:Rust's 2017 roadmap, six months in
by the_why_of_y on Thursday July 06, 2017 @06:43PM
(#14714560)
GTK is a bazaar style project, if it has issues on some platform then that's because no developers have stepped up to fix issues on that platform.
There's support for Windows native file dialogs since 3.20.
https://blogs.gnome.org/alexl/2015/11/05/native-file-chooser...
Also the devs no longer consider it a cross platform library, everyone using it as one is stuck on GTK2.