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R:BASE 11 Help

Navigation: Function Index > C

CHKKEY

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(CHKKEY(0))

 

Returns an integer value of 1 if there are keystrokes available in the type-ahead buffer. 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.