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Q299955: FIX: Using SET(‘PRINTER) in COM Server Causes Error

Article: Q299955
Product(s): Microsoft FoxPro
Version(s): 6.0
Operating System(s): 
Keyword(s): kbCOMt kbvfp kbvfp600 kbvfp600bug kbGrpDSFox kbCodeSnippet kbvfp700fix kbvfp700
Last Modified: 29-AUG-2001

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 6.0 
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SYMPTOMS
========

If you use SET('PRINTER',2) or SET('PRINTER,3) in a Component Object Model (COM)
server, you may receive an error message that resembles the following:

  OLE IDispatch exception code 1031...
  User-interface not allowed at this time.

STATUS
======

This problem was corrected in Visual FoxPro version 7.0 for Windows.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. In Visual FoxPro (VFP) 6.0, paste the following code in a new program:

   *!* Q299955
   *!* Q299955
  LOCAL lcVar
  #DEFINE CRLF CHR(13) + CHR(10)

  CREATE PROJECT PrnTest NOWAIT

  lcVar = "DEFINE CLASS PrnTest AS CUSTOM OLEPUBLIC" + CRLF + ;
          "   PROCEDURE ShowProblem" + CRLF + ;
          "         LOCAL lcPrinter" + CRLF + ;
          "         SYS(2335,0)" + CRLF + ;
          "         lcPrinter = SET('PRINTER', 2)"  + CRLF + ;
          "   ENDPROC" + CRLF + ;
          "ENDDEFINE"

  =STRTOFILE(lcVar, 'PrnTest.prg', .F.)
  _VFP.ACTIVEPROJECT.FILES.ADD('PrnTest.prg')
  _VFP.ACTIVEPROJECT.BUILD('PrnTest.dll', 4) 

2. Save and run the program (the name is unimportant).

3. Type the following commands in the Command window:

  x = CREATEOBJECT("PrnTest.PrnTest")
  x.ShowProblem()

Additional query words:

======================================================================
Keywords          : kbCOMt kbvfp kbvfp600 kbvfp600bug kbGrpDSFox kbCodeSnippet kbvfp700fix kbvfp700 
Technology        : kbVFPsearch kbAudDeveloper kbVFP600
Version           : :6.0
Issue type        : kbbug
Solution Type     : kbfix

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