| Name: | CHKKEY | Syntax: | (CHKKEY(0)) |
|---|---|---|---|
| Family: | Function | Category: | Keyboard and Environment |
| Description: | Checks the keyboard buffer | ||
Use the CHKKEY function to determine if a key stroke is waiting in the keyboard buffer. CHKKEY will return an integer value of 1 if there are keystrokes available in the keyboard buffer and returns 0 if no keystrokes are available. Use CHKKEY before GETKEY to determine if a key is available. CHKKEY does nothing with the zero that you enter in parentheses; CHKKEY returns a value without receiving one.