
Chapter 9. Event Polling and Error/Event Trapping
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The
RETURN statement in the event-handling routine will return control to the statement imme-
diately following that statement where the keyboard interrupt occurred.
Even if a function key is assigned a null string by the KEY statement, pressing the function key
will cause a keyboard interrupt when the KEY ON statement activates that function key.
If function keys specified for keystroke trapping are pressed during execution of the following
statements or functions relating keyboard input, this trapping facility operates as described
below.
Statements or Functions Keystroke Trapping
INPUT statement
Ignores the entry of the pressed key and
causes no interrupt.
LINE INPUT statement
Same as above.
INPUT$ function
Same as above.
INKEY$ function
Ignores the entry of the pressed key, but
causes an interrupt.
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