Has a key been pressed?

Is there a way within 4gl (or via a C routine called from 4gl) to tell whether there has been a key pressed without actually reading the key? I want to be able to keep the time updated on the screen and need to know when a key is pressed so I can go process it. I am using rfetchch() to get keys and would like to know if there are other such functions I can access via C routines I call from 4gl. Any info is appreciated. Dan Wooster uunet!bjudev!dwooster