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29 lines
802 B
Plaintext
29 lines
802 B
Plaintext
'''This page is maintained for historic purposes. The keyword is not supported in QB64.'''
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----
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[[ON COM(n)]] branches to a line number or label when there is a value in the serial port specified.
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{{PageSyntax|}}
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:[[ON COM(n)]] [[GOSUB]] {''linenumber''|''label''}
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{{PageDescription}}
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*'''[[Keywords currently not supported by QB64|Not implemented in QB64]]'''
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* ''n'' can be 1 or 2 (the number of the serial port that is tested).
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* If a value exists in the port then the program branches to the ''linenumber'' or ''label'' specified.
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* The event handler must first be activated with [[COM|COM(n) ON]]
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{{PageSeeAlso}}
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* [[COM(n)]]
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* [[OPEN COM]]
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* [[Port Access Libraries]] {{text|(COM or LPT registers)}}
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* [[Windows_Libraries#Windows_Ports|Enumerating Windows Ports]]
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{{PageNavigation}}
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