I\'m in a ArchLinux with OpenBox and I want to hide the cursor on fullscreen inside a Qt 4.8 application. I am aware about some other question about it but no one works ever
There is a program named unclutter that hides the mouse pointer. Here's an ArchLinux package:
https://www.archlinux.org/packages/community/i686/unclutter/
I currently use it on an embedded system for hiding the mouse cursor on a touchscreen.