Had some fun over the weekend. Turns out the wireless desktop I bought the other day is ... well, special. The evdev driver doesn't just register a mouse, the multimedia keys on the keyboard are registered as key class on the mouse. When you press any of them, the X server thinks the mouse just pressed a key.

Now as it happens, MPX wasn't really set up to cater with devices that are both mice and keyboards simultaneously. Even worse, the class copying MPX needs to do each time you change devices was quite expensive. So I've implemented some workarounds for all that and MPX now works smoothly and stable on my home machine.

I think it's getting close to being merge-able now, so please give the current version a good testing.