Starting with daily build 2016.2813, you can now show and hide the mouse cursor in both OS X and Windows desktop builds. It’s really easy too, simply call:
native.setProperty( "mouseCursorVisible", false )
to hide the mouse cursor. To show it, call the function again with true as the second parameter.
native.setProperty( "mouseCursorVisible", true )
This completes the Optionally Hide OS Cursor in Desktop Builds feedback request. If you have questions or need help, discuss it in the forums.