making a program leave a msg for background program when it closes

HI,
I'm very new to programming and i'm probably in the wrong forum. I'm doing a project for uni where i want unreal tournament to leave a msg when it exits so that another program ' adobe director' can see that its finished and then load something else. I thought about finding a way for the program to leave some sort of word file in a directory.
I don't know who to ask so i thought i'd start here!


I'm pretty lost so i'd be really grateful for any help!

had an idea. Is there some kind of log in windows that would give reference to unreal tournament closing? Does it change the registry?

If the apps had both been written by you I would suggest a MS Message Queue (MSMQ) or registering a broadcast message (HWND_BROADCAST) depending on the requirements (reliability, amount of data ect).

Or create a file and have the second app monitor the folder for changes (there are WIN32 API functions for this purpose)

But with a third party game.....