Disable Print Screen?

[SMcNeill]

That's reason enough to do it.  "The boss said so", IS always a valid excuse, no matter what some folks might think.  When you're doing something for someone else, you do it the way they want -- even if it doesn't always make sense to you.

Give that a test run and let me know if it works for you as it should.  According to the return values on those functions, it *should*, but I swear by nothing until it's tested and proven to work in your own stuff.