en:onerror
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en:onerror [2016/01/01 22:41] 127.0.0.1 external edit |
en:onerror [2020/02/28 10:46] (current) |
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| ==== Format ==== | ==== Format ==== | ||
| - | **onerror** | + | **onerror** |
| ==== Description ==== | ==== Description ==== | ||
| - | Causes the [[GosubReturn|Gosub]] at //label// to be executed or [[Subroutine|Subroutine]] to be called | + | Causes the [[GosubReturn|Gosub]] at [[labelprogramsyntax|label]] to be executed |
| You may not execute an OnError statement inside a [[Try|Try / Catch / End Try]] statement. | You may not execute an OnError statement inside a [[Try|Try / Catch / End Try]] statement. | ||
| Line 11: | Line 11: | ||
| ==== Example ==== | ==== Example ==== | ||
| - | See example of usage on [[Errorcodes|Error Codes]] and [[ThrowError|ThrowError]] | + | < |
| + | # test error trapping | ||
| + | onerror nicetrap | ||
| + | print 1 | ||
| + | next haha | ||
| + | print 2 | ||
| + | open 999, " | ||
| + | print "Runs Anyway" | ||
| + | |||
| + | # test error trapping off and fail at any error (default) | ||
| + | offerror | ||
| + | print 3 | ||
| + | next hoho | ||
| + | print "never get here" | ||
| + | |||
| + | end | ||
| + | |||
| + | nicetrap: | ||
| + | # this is the nice error handler | ||
| + | print "trap and run - error on line " + lasterrorline + " - error number " + lasterror + " message " + lasterrormessage + " (" + lasterrorextra + " | ||
| + | return | ||
| + | </ | ||
| + | will display\\ | ||
| + | < | ||
| + | 1 | ||
| + | trap and run - error on line 4 - error number 4 message Next without FOR () | ||
| + | 2 | ||
| + | trap and run - error on line 6 - error number 5 message Invalid File Number () | ||
| + | Runs Anyway | ||
| + | 3 | ||
| + | ERROR on line 12: Next without FOR | ||
| + | </ | ||
| + | |||
| + | See additional | ||
| ==== See Also ==== | ==== See Also ==== | ||
| Line 18: | Line 51: | ||
| ==== History ==== | ==== History ==== | ||
| |0.9.6z|New To Version| | |0.9.6z|New To Version| | ||
| + | |1.99.99.33|Removed the ability to use a subroutine for error trapping| | ||
en/onerror.1451713298.txt.gz · Last modified: 2020/02/28 10:46 (external edit)
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