I am trying to Hook Cocoa API.
I know cocoa provides a public api for hooking, so it’s possible to hook the system function and retrieve information like the curren
The words you choose and the very broad scope they cover suggest you need to start at the very beginning. There is a simple Cocoa Application tutorial here. It walks you through the basic process of creating a Cocoa application for the Mac. Start there, then post more specific questions as they arise.