Returns the command assigned to each of these event-handling commands: ON ERROR, ON ESCAPE, ON KEY LABEL, or ON PAGE.
Syntax
ON(cONCommand [, KeyLabelName])
Returns
Character
Arguments
cONCommand
Specifies one of the event-handling commands. Here are the commands and corresponding character expressions to use with ON( ):
| Command | cONCommand |
| ON ERROR | ERROR |
| ON ESCAPE | ESCAPE |
| ON KEY LABEL | KEY |
| ON PAGE | PAGE |
For example, to return the command currently assigned to ON ERROR, use the following:
? ON('ERROR')
KeyLabelName
Used in ON KEY LABEL to specify a key or key combination to which the command is assigned. Specify KEY in cONCommand and the key label name of the key or key combination in KeyLabelName. For a complete list of key label names, see ON KEY LABEL.
For example, to return the command currently assigned to the F7 function key with ON KEY LABEL, use the following:
? ON('KEY', 'F7')
Remarks
When an event occurs that is trapped by one of the event-handling commands, the command assigned by the event-handling command executes. ON( ) returns the command you assigned to an event-handling command. ON( ) returns an empty string if a command isn't currently assigned to the event-handling command you specify.