qb64/internal/help/ON_PEN.txt

'''This page is maintained for historic purposes. The keyword is not supported in QB64.'''

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[[ON PEN]] enables event handling for the ''light pen''.


{{PageSyntax}}
: [[ON PEN]] [[GOSUB]] {{Parameter|lineLabel}} | {{Parameter|lineNumber}}


{{PageDescription}}
*'''[[Keywords currently not supported by QB64|Not supported in QB64.]]'''
* Any activity on the lightpen will cause the program to branch to the specified {{Parameter|lineLabel}} or {{Parameter|lineNumber}}.
* [[PEN (statement)|PEN]] [[ON]] enables or resumes event trapping.
* [[PEN (statement)|PEN]] [[OFF]] disables event trapping and event logging.
* [[PEN (statement)|PEN]] [[STOP]] temporarily suspends event trapping. When resumed again by [[PEN (statement)|PEN]] [[ON]]), may report events while suspended.


{{PageSeeAlso}}
* [[PEN]] (function), [[PEN (statement)]]


{{PageNavigation}}