...what? The poster linked to a library implementing a way to interface keyboard events with the Linux kernel input subsystem, to show how one might solve the p

...what? The poster linked to a library implementing a way to interface keyboard events with the Linux kernel input subsystem, to show how one might solve the problem the posted blog post attempts to solve from within a web browser when one is writing native code. You're talking about cross platform GUI development toolkits. The two things are just 2 completely and utterly different topics.