A good stress test is to try adding a parameter to your window manager that lets you specify the window id to use as the root window, and pass it xcalc's client

A good stress test is to try adding a parameter to your window manager that lets you specify the window id to use as the root window, and pass it xcalc's client window id! Then you can totally customize your calculator! I prototyped a way of adding tabs and pie menus to Mac windows, by making a full screen web browser overlay with a transparent background, and just implementing and drawing the tabs and pie menus in JavaScript and html! The tabs even intercepted events properly. It monitored the window positions and other stuff through various Mac system and accessibility apis, so it would move the tab to follow the window, so they might become detatched and lag a bit, so it wasn't perfect. I wrote more about that (why not just run a web browser directly on the hardware, and dispense with X11 or Wayland entirely?) and some thoughts on Wayland in general here: https://news.ycombinator.com/item?id=29097030 https://news.ycombinator.com/item?id=29097030