How did you people achieve cross-platform key input event handling in OpenRA?

[ShikiSuen]

I am developing a cross-platform library for input method development. It is written in C#.
I am seeking a cross-platform approach using .NET 6 to handle key input events.

It occurred to me that OpenRA is using .NET 6, hence this question thread.

[abcdefg30]

OpenRA uses SDL2 for key inputs: https://github.com/OpenRA/OpenRA/blob/b ... #L190-L191