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Q297803: FIX: VFP Crashes With Two REPORT Previews Active

Article: Q297803
Product(s): Microsoft FoxPro
Version(s): 3.0,3.0b,5.0,5.0a,6.0
Operating System(s): 
Keyword(s): kbReportWriter kbvfp300bBUG kbvfp300BUG kbvfp500aBUG kbvfp500bug kbvfp600bug kbGrpDSFox
Last Modified: 20-SEP-2001

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a, 6.0 
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SYMPTOMS
========

If you attempt to preview a report for a second time while a preview window from
that report is still active, Visual FoxPro (VFP) may crash.

RESOLUTION
==========

Test for an existing window by using the WEXIST function. To do this, add the
following code before the REPORT command in the code that is given in the "More
Information" section.

  WEXIST("Report Designer - testreport.frx")

VFP detects that a window is already open for this report and does not attempt to
open a second preview window for the same report.

STATUS
======

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

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

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

To reproduce the behavior, run the following code:

  *!* Q297803 FIX: Visual FoxPro Crashes When Two Instances of REPORT FORM PREVIEW Are Active
  SET SAFETY OFF

  CREATE CURSOR test (field1 C(10))
  INSERT INTO test VALUES ("Alec")
  INSERT INTO test VALUES ("Seregil")

  CREATE REPORT testReport FROM test

  REPORT FORM testReport PREVIEW NOWAIT
  INSERT INTO test VALUES ("Nysander")
  REPORT FORM testReport PREVIEW NOWAIT

Additional query words:

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Keywords          : kbReportWriter kbvfp300bBUG kbvfp300BUG kbvfp500aBUG kbvfp500bug kbvfp600bug kbGrpDSFox kbDSupport kbCodeSnippet kbvfp700fix 
Technology        : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP500 kbVFP600 kbVFP500a
Version           : :3.0,3.0b,5.0,5.0a,6.0
Issue type        : kbbug
Solution Type     : kbfix

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