ERROR - QB64Official/qb64 GitHub Wiki

The ERROR statement is used to simulate a program error or to troubleshoot error handling procedures.

Syntax

ERROR codeNumber%

Description

• Can be used to test an error handling routine by simulating an error.
• 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.
• Use error codes between 100 and 200 for custom program errors that will not be responded to by QB64.

Example(s)

Creating custom error codes for a program that can be handled by an ON ERROR handling routine.

ON ERROR GOTO handler

IF x = 0 THEN ERROR 123
x = x + 1
IF x THEN ERROR 111

END

handler:
PRINT ERR, _ERRORLINE
BEEP
RESUME NEXT 

Note: Don't use error codes under 97 or over 200 as QB64 may respond to those errors and interrupt the program.

See Also

• ON ERROR
• ERR, ERL
• _ERRORLINE, _ERRORMESSAGE$
• _INCLERRORLINE, _INCLERRORFILE$
• ERROR Codes (list)