[Cueball]

No, it is extremely possible to detect those keypresses, as long as the player has configured their game to use those keys. You can not count on a single key function being assigned to a certain key - for example, I am on a laptop, so instead of having to hold the function key and press the numeric function keys, I re-assigned the keys so that I can press J, K, L, I to use the special action keys.

Don't assume anything about keys, because you don't know everybody's key settings.

~Cueball~