Record PC Activity based on file/app focus

[frank]

I am definitely a life hacker. I visit www.lifehacker.com about every day.

I suspect anyone that uses QM is in one way or another.

Spend 2hrs automating what would take 2hrs manually only to save 110 minutes every subsequent time.

Thanks for the reference. Any idea how to code this though?

The pieces I need:
-how to capture the app in focus's name
-how to capture the filename in focus
-how to trigger every time focus changes
-how to include a tab or carriage return when writing to a file

thanks