Key logging

[IWishIKnew]

I want to make a key logger (I want to create it to excersize my C++ cause im a beginner) so i can practice input/output with both keys and files. I already got the VKC's for the buttons, now all I need is a way to make it run in the background (so you dont notice unless you look for it), a way to make it automatically start up (run it as a service mabey?), and I need the statement that get's the key that was pressed so that all the If...Then statements can match the key pressed, and log it. Thank you for your time.