Difference between revisions of "SET ESCAPE"
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==Class== | ==Class== | ||
Keyboard Events | Keyboard Events | ||
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==See Also== | ==See Also== | ||
| − | [[ON ESCAPE]], [[ON KEY]], [[SET DOESCAPE]], [[ | + | [[DEBUG]], [[CANCEL]], [[INKEY()]], [[ON ESCAPE]], [[ON KEY]], [[RESUME]], [[SET COMPILE]], [[SET DEVELOPMENT]], [[SET DOESCAPE]], [[SET STEP]], [[SUSPEND]] |
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==Example== | ==Example== | ||
| − | < | + | <code lang="recital"> |
procedure escape | procedure escape | ||
set message to "Operation canceled." | set message to "Operation canceled." | ||
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do longjob | do longjob | ||
on escape do escape | on escape do escape | ||
| − | do biggerjob</ | + | do biggerjob</code> |
Revision as of 15:55, 15 April 2009
Class
Keyboard Events
Purpose
Toggle action of the interrupt key to halt execution of a program file
Syntax
SET ESCAPE ON | OFF | (<expL>)
See Also
DEBUG, CANCEL, INKEY(), ON ESCAPE, ON KEY, RESUME, SET COMPILE, SET DEVELOPMENT, SET DOESCAPE, SET STEP, SUSPEND
Description
If SET ESCAPE is ON, then pressing the interrupt key will cause the current program to be halted. If the current command being executed at the time of the interrupt key being pressed was entered in interactive mode, then the command is canceled.
If a program is executing, then the pop-up debugger is activated. If you choose the Cancel option, control will return to the ’>’ prompt. If you choose the Suspend option, execution of the program is suspended. You can then enter interactive commands at the ’>’ prompt, and resume operation of the program with the RESUME command. If you choose the Ignore option, then program execution continues as if no interrupt had occurred.
The SET DOESCAPE command can be used to cancel only the current command during the execution of a program. The interrupt key can be trapped with the ON ESCAPE command. By default, ESCAPE is ON.
Example
procedure escape set message to "Operation canceled." return to master set escape on do longjob on escape do escape do biggerjob
Products
Recital Terminal Developer
