Dear All Is there an interface for Mac OS X Leopard which allows a direct access to API. I know about Xcode but it gives only frameworks which are ready I say "boxed" classes. When I study Cocoa framework I feel as if being boxed by the ready made classes. Maybe I can't configure Xcode to use it on API level. I'd like to have access to structures and functions not of a framework but call directly API functions and structures. I'm looking for something like , I call, a platform. I know that I can ask for something that doesn't exist on Mac, but maybe it is possible to code on a lower level than Cocoa framework. Thank you in advance.