Zend certified PHP/Magento developer

Notification on window redraw/window update

I have three programs running that will encounter sporadic updates to long running tasks. I would like to be notified when the program encounters an update/something changes on in their specific window. I have to have all three programs running at once, I don’t have source code access to any of them, and they have no “callback” API available to them. I can’t run a screen scraper and compare screenshots or the like because I will be using the machine in the interim.

Is there some way for me to be notified when these programs’ windows are updated? Is there some OS setting that I can allow that would enable my programs to flash in the Windows task bar/OSX dock when this condition is hit (not limiting to the solution to that, just an example)?