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Extensible Markup Language  |  2002-01-24  |  2.1 KB  |  39 lines
  1. <?xml version="1.0" encoding="utf-8"?>
  2. <html><head><title>Error Function [Runtime]</title><meta name="filename" content="text/sbasic/common/03050300"/><meta name="language" content="en-US"/><help:css-file-link xmlns:help="http://openoffice.org/2000/help"/><!--The CSS style header method for setting styles--><style type="text/css">
  3.  
  4.         p.P1{
  5.                 }
  6.         p.P2{
  7.                 }
  8.         span.T1{
  9.                 font-weight:bold;}
  10.         </style></head><body>
  11.   
  12.   
  13.   <help:to-be-embedded Eid="errorf" xmlns:help="http://openoffice.org/2000/help">
  14.   <p class="Head1"><help:link Id="66536">Error Function [Runtime]</help:link></p>
  15.   <p class="Paragraph">Returns the error message corresponding to a given error code.</p>
  16.   </help:to-be-embedded>
  17.   <p class="Paragraph"><span class="T1">Syntax</span>:</p>
  18.   <p class="Paragraph">Error (Expression) <help:key-word value="Error" tag="kw66536_1" xmlns:help="http://openoffice.org/2000/help"/></p>
  19.   <p class="Paragraph"><span class="T1">Return value</span>:</p>
  20.   <p class="Paragraph">String</p>
  21.   <p class="Paragraph"><span class="T1">Parameter</span>:</p>
  22.   <p class="Paragraph">Expression: Any numeric expression that contains the error code of the error message to be returned.</p>
  23.   <p class="Paragraph">If no parameters are passed, the Error function returns the error message of the most recent error that occured during program execution.</p>
  24.   <p class="P2">Example:</p>
  25.   <p class="PropText">sub ExampleError</p>
  26.   <p class="PropText">on error goto ErrorHandler REM Set up error handler</p>
  27.   <p class="PropText">Dim iVar as Integer</p>
  28.   <p class="PropText">Dim sVar As String</p>
  29.   <p class="PropText">REM An error occurs due to non-existent file</p>
  30.   <p class="PropText">iVar = Freefile</p>
  31.   <p class="PropText">Open "\file9879.txt" for Input as #iVar</p>
  32.   <p class="PropText">Line Input #iVar, sVar</p>
  33.   <p class="PropText">Close #iVar</p>
  34.   <p class="PropText">exit sub</p>
  35.   <p class="PropText">ErrorHandler:</p>
  36.   <p class="PropText">MsgBox "Error " & err & ": " & error$ + chr(13) + "In line : " + Erl + chr(13) + Now , 16 ,"error occurred"</p>
  37.   <p class="PropText">end sub</p>
  38.   <p class="PropText"/>
  39.  </body></html>