It’s janky AF mess.
Internally the copilot key is hard coded to be meta + shift + f23. If you don’t recognise what the f23 key is, that’s because it was last featured over four decades ago on the IBM model M.
The fact that Microsoft has decreed that the Copilot key must send this exact shortcut of three different keys makes it very difficult to remap consistently.
Most keyboard remapping software (SharpKeys) work best at remapping single keys, not shortcuts. Windows users can use PowerToys to remap this three key shortcut, if you try to use it normally as a right ctrl, e.g. rctrl lshift p it doesn’t work consistently.
I suspect it might be because you’re essentially trying to send a whopping five keycodes for a shortcut, when most programs already struggle to handle 4.
Linux users were similarly out of luck until early last year, when most desktop environments fixed up the key codes.
Copilot key is based on a button you probably haven’t seen since IBM’s Model M - Ars Technica - https://arstechnica.com/gadgets/2024/04/shoehorned-windows-copilot-key-is-just-a-reprogrammable-macro-journalist-shows/
Microsoft Copilot Key : r/olkb - https://www.reddit.com/r/olkb/comments/193b5id/comment/kxqj1ve/
Linux 6.14 Adds Support For The Microsoft Copilot Key Found On New Laptops - Phoronix - https://www.phoronix.com/news/Linux-6.14-Input






Huh? Both hover to focus and click button in background work in macOS, though hover to focus usually requires an external application. There used to be a focus follows mouse that you could enable via a terminal command, but Apple removed it.
The top menu bar kind of seems to be more of a result of historical happenstance, and maybe some different philosophies regarding Fitts law.
Bill Atkinson, who designed the UX for the Apple Lisa recounts that part of the decision was to avoid the problem of menu items being possibly obscured. If the window of some application is near the bottom or partially off the desktop, the menu bar of individual windows can become obscured and inaccessible.
Historically the menu bar would’ve been easier for normal people to learn due to consistency, and also helped with limited screen estate.
Memories of Lisa - CHM - https://computerhistory.org/blog/memories-of-lisa/