Ok so I have a io_registry_entry_t from HID (its my keyboard), and I want to find a particular cookie value for the entry with a certain usage and usage page.

this code does exactly what I need to do:
http://developer.apple.com/documentation...ion_4.html

but I really dont want to have to traverse this dictionary when the app starts up..

So does anyone out there know another way to do it?

I found copyMatchingElements and it does exactly what I want..
someone should put that on the apple page, its very misleading.