'Native File Dialog that doesn't block?

I'd like to use the fltk-rs Native File chooser, but my app can't block. Is there a way to make it so that I can show it without blocking (and also add a callback for when the file is selected)?

You can do this with the non-native file picker very easily but its ugly



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source