XFixesShowCursor / XFixesHideCursor does not actually take the suppled window argument into account -- the effect is actually global. Use XDefineCursor instead. https://bugzilla.gnome.org/show_bug.cgi?id=707071
Now we either use core X11 or XInput 2. https://bugzilla.gnome.org/show_bug.cgi?id=703969
We should not have header files in the project root.