Hooking Cocoa API?

Question

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

Answer 1

You can't intercept another application's drawing as it happens, but you can capture the results after the fact. Use Quartz Window Services to take screenshots, and Quartz Display Services to find out when the screen gets updated.