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b586eafd3b
LINE INPUT will now use the faster method if passed a file handle that has been opened FOR BINARY. As such, the _BLINEINPUT command has been removed. qb64.bas now takes advantage of this for reading from '$include files, at least in Include Manager 1. Some tweaking of internal/source/main.txt was required to get things into a sane state, so I'm holing off changing the compiler any further so the auto-builder can make sure everything's smoothed over. Note: Everything should still compile as normal; I'm just being overcautious.
39 lines
1.1 KiB
Plaintext
39 lines
1.1 KiB
Plaintext
The '''ERROR''' statement is used to simulate a program error or to troubleshoot error handling procedures.
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{{PageSyntax}}
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:: ERROR code
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* Can be used to test an error handling routine by simulating an error.
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* Error code 97 can be used to invoke the error handler for your own use, no real error in the program will trigger error 97.
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* Use error codes between 100 and 200 for custom program errors that will not be responded to by QB64.
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''Example:'' Creating custom error codes for a program that can be handled by an [[ON ERROR]] handling routine.
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{{CodeStart}} '' ''
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{{Cl|ON ERROR}} {{Cl|GOTO}} handler
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{{Cl|IF...THEN|IF}} x = 0 {{Cl|THEN}} {{Cl|ERROR}} 123
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x = x + 1
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{{Cl|IF...THEN|IF}} x {{Cl|THEN}} {{Cl|ERROR}} 111
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{{Cl|END}}
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handler:
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{{Cl|PRINT}} {{Cl|ERR}}, {{Cl|_ERRORLINE}}
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{{Cl|BEEP}}
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{{Cl|RESUME}} {{Cl|NEXT}} '' ''
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{{CodeEnd}}
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: '''Note: Don't use error codes under 97 or over 200 as QB64 may respond to those errors and interrupt the program!'''
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''See also:''
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*[[ON ERROR]]
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*[[ERR]], [[ERL]]
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*[[_ERRORLINE]]
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*[[ERROR Codes]] (list)
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{{PageNavigation}} |