I'm at the end of my mental rope. I like the menu library you've got, but I've tried 20 different approaches with no luck.
I'm trying do do a 'simple' menu with a 16x2 and a (interrupt) rotary encoder with button. The menu has 6 cases (Menu) and one of the case has a submenu with menuitem with a select() and back() with 2 options.
Can the developer or some kind library supporting soul create a barebones example? I think the community would greatly benefit from an example like this as these rotary encoders are very popular and of course 16x2 lcd are pretty much universal.