Best Way to Communicate between Two CC Programs?

What would be the best way to send data between two Construct Classic Programs?

For instance, I want to be running a program and have start another separate program with some variables, then when the second program is done let the first to know.

Just as a note I'm not concerned with the user hacking/cheating the program, if that makes it any easier.

Thanks.

Hmm, you could do it using the multiplayer plugin: http://www.scirra.com/forum/plugin-network-v03a-update_topic43662.html

But you will need to have it running in XP compatability mode and run as an administrator on anything Windows Vista and up.

Here's a chat mmo I made with it: http://www.scirra.com/forum/pixel-people-online-alpha-02-source_topic43970.html

Have the main application run as the server, then have the client automatically connect to it (connect to localhost to run on the same machine).

Otherwise you can try passing a text file between them, have input.txt fed to the client, which then edits output.txt for the main to read. I think you'll need to write/read them at different times in order to prevent them from accessing the same file at once though.

Thanks, both of those sound like a good idea.