[Pawn] How to check alt-tabbing using onplayerupdate?

[c4p]

I tried different methods to check if the player is in menu or tabbed, but they most likely return false activity when the player tabs out to the desktop. There were some onplayerupdate tabbing checkers on the original forums, but they are no longer available, so i am stuck. If you have a code snippet please help this man out.