Revision [15048]

This is an old revision of KeyPgErr made by AgAmemnus on 2011-03-19 01:28:23.

 

ERR


Error handling function to return the error number of the last error

Syntax:
Usage:
result = Err

Return Value:
After an error, returns the error code that occurred.

Description:
Err can always be used, even if QB-like error handling is not enabled.
NOTE: Calling KeyPgPrint "print" after an error occurred clears the error value; KeyPgPrint "print err" will always return 0. To print the error value, err should be first copied to an auxiliary variable.
See TblRuntimeErrors Runtime Error Codes for a listing of runtime error numbers and their associated meaning.

Examples:
An example using QBasic style error handling (compile with -ex option)
'' Compile with -lang fblite or qb

#lang "fblite"

On Error Goto Error_Handler
Error 150
End

Error_Handler:
  n = Err
  Print "Error #"; n
  Resume Next

An example using inline error handling
Dim a As String

Do
    Line Input "Input filename: ", a
    If a = "" Then End
    Open a For Input As #1
Loop Until Err = 0

Print "File " & a & " opened successfully"
Close #1


Differences from QB:
  • Error numbers are not the same as in QB.

See also:

Back to Error Handling Functions
Valid XHTML :: Valid CSS: :: Powered by WikkaWiki



sf.net phatcode