I did something like this for linux, basing it on vim's modes. I had great plans, but really struggled with trying to learn C++ at the same time, so I eventuall

I did something like this for linux, basing it on vim's modes. I had great plans, but really struggled with trying to learn C++ at the same time, so I eventually gave it up. It developed a bug where it crashed randomly, and because of the way window managers run I could never track it down.