FKey Error Cond - Revision history

Laura at 18:06, 24 January 2013

2013-01-24T18:06:10Z

← Older revision		Revision as of 18:06, 24 January 2013
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	The ~~FNKEY~~ error condition is available for use only with the ON error statement. It cannot be used at the end of a program line or in the Exit statement.		The FKEY error condition is available for use only with the ON error statement. It cannot be used at the end of a program line or in the Exit statement.

	===Syntax===		===Syntax===
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	===Parameters===		===Parameters===
	The "numeric expression" portion of the ~~FNKEY~~ error condition is a numeric expression that evaluates to a number from 1 to 10. The value of the num-expr determines which function key, when pressed, will activate the ON statement's GOTO.		The "numeric expression" portion of the FKEY error condition is a numeric expression that evaluates to a number from 1 to 10. The value of the num-expr determines which function key, when pressed, will activate the ON statement's GOTO.

	===Error Traps:===		===Error Traps:===
	During program processing (the status line says "RUN"), ~~FNKEY~~ traps the pressing of a function key which is specified by the "num-expr" parameter.		During program processing (the status line says "RUN"), FKEY traps the pressing of a function key which is specified by the "num-expr" parameter.

	Business Rules tests for the pressing of function keys before execution of each		Business Rules tests for the pressing of function keys before execution of each
	line number. Multiple uses of the [[ON ~~FNKEY~~]] statement do not impact program		line number. Multiple uses of the [[ON FKEY]] statement do not impact program
	performance.		performance.

	~~FNKEY~~ has no effect during other operation modes such as INPUT or SELECT (see the [[CMDKEY]] function for information about trapping function key selections during these modes). If ~~FNKEY~~ is set to SYSTEM, the value of ERR will be set to 1. If ~~FNKEY~~ is not set and the operator presses a function key during processing, it will be ignored.		FKEY has no effect during other operation modes such as INPUT or SELECT (see the [[CMDKEY]] function for information about trapping function key selections during these modes). If FKEY is set to SYSTEM, the value of ERR will be set to 1. If FKEY is not set and the operator presses a function key during processing, it will be ignored.

	When FNKEY is set to either SYSTEM or GOTO and the specified function key is pressed, the keyboard buffer will be cleared up to the pressing of that key in the same manner that pressing Ctrl-A clears the buffer.

			When FKEY is set to either SYSTEM or GOTO and the specified function key is pressed, the keyboard buffer will be cleared up to the pressing of that key in the same manner that pressing Ctrl-A clears the buffer.

	<noinclude>		<noinclude>
	[[Category: Error Conditions]]		[[Category: Error Conditions]]
	</noinclude>		</noinclude>

Laura: /* Syntax */

2013-01-23T23:21:01Z

Syntax

← Older revision		Revision as of 23:21, 23 January 2013
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	===Syntax===		===Syntax===

	[[file:FKeyEC.png]]		[[file:FKeyEC.png\|300px]]

	===Parameters===		===Parameters===

Laura: /* Parameters */

2013-01-23T23:19:08Z

Parameters

← Older revision		Revision as of 23:19, 23 January 2013
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	===Parameters===		===Parameters===
	The "~~num-~~expression" portion of the FNKEY error condition is a numeric expression that evaluates to a number from 1 to 10. The value of the num-expr determines which function key, when pressed, will activate the ON statement's GOTO.		The "numeric expression" portion of the FNKEY error condition is a numeric expression that evaluates to a number from 1 to 10. The value of the num-expr determines which function key, when pressed, will activate the ON statement's GOTO.

	===Error Traps:===		===Error Traps:===

Laura: /* Syntax */

2013-01-23T23:18:51Z

Syntax

← Older revision		Revision as of 23:18, 23 January 2013
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	===Syntax===		===Syntax===

	[[file:~~FNKey~~.png]]		[[file:FKeyEC.png]]

	===Parameters===		===Parameters===

Laura: moved FNKey Error Cond to FKey Error Cond

2013-01-23T23:13:18Z

moved FNKey Error Cond to FKey Error Cond

← Older revision	Revision as of 23:13, 23 January 2013
(No difference)

Laura: Created page with "The FNKEY error condition is available for use only with the ON error statement. It cannot be used at the end of a program line or in the Exit statement. ===Syntax=== [[file..."

2013-01-23T23:00:50Z

Created page with "The FNKEY error condition is available for use only with the ON error statement. It cannot be used at the end of a program line or in the Exit statement. ===Syntax=== [[file..."

New page

The FNKEY error condition is available for use only with the ON error statement. It cannot be used at the end of a program line or in the Exit statement.

===Syntax===

[[file:FNKey.png]]

===Parameters===
The "num-expression" portion of the FNKEY error condition is a numeric expression that evaluates to a number from 1 to 10. The value of the num-expr determines which function key, when pressed, will activate the ON statement's GOTO.

===Error Traps:===
During program processing (the status line says "RUN"), FNKEY traps the pressing of a function key which is specified by the "num-expr" parameter.

Business Rules tests for the pressing of function keys before execution of each
line number. Multiple uses of the [[ON FNKEY]] statement do not impact program
performance.

FNKEY has no effect during other operation modes such as INPUT or SELECT (see the [[CMDKEY]] function for information about trapping function key selections during these modes). If FNKEY is set to SYSTEM, the value of ERR will be set to 1. If FNKEY is not set and the operator presses a function key during processing, it will be ignored.

When FNKEY is set to either SYSTEM or GOTO and the specified function key is pressed, the keyboard buffer will be cleared up to the pressing of that key in the same manner that pressing Ctrl-A clears the buffer.

<noinclude>
[[Category: Error Conditions]]
</noinclude>