I'm a bit confused, and I don't know QUITE how to explain it, however I'll try my best!
Anyway, say I wanted to code a API, that would grab a list from ANOTHER program.
For example, if I had a small chatting program, and there was a list of people, say John and Bob, how would I be able to treat the list, as if it was in the main program I'm coding? Also, how can I send messages to the window to tell it to say, press on button number 5, 2, etc..
If anyone needs more explaining, <b>PLEASE</b> post.