Q190545: BUG: RUN Command Hangs Form with WindowType=1 and Desktop=.T.

Article: Q190545
Product(s): Microsoft FoxPro
Version(s): WINDOWS:5.0,5.0a
Operating System(s): 
Keyword(s): 
Last Modified: 11-DEC-1999

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The information in this article applies to:

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

You display a form with Desktop = .T. and WindowType = 1. The form issues a RUN
command that opens an MS-DOS box. When the MS-DOS box closes, the form appears
hung and will not accept keyboard or mouse input.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. We are researching this bug and will post new
information here in the Microsoft Knowledge Base as it becomes available.

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

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

1. Run the following code from a program (.prg) file. In order to demonstrate
  the behavior, you need to run it in such a way that the Command window is the
  only window open when the program is started. You can do this by issuing the
  code DO <Filename.prg> in the Command window, where the filename is the
  name of the program file into which you have saved the code below. The
  program depends on the existence of a file called Autoexec.bat in your "C:\"
  directory. You can create a dummy file there if this file does not exist, or
  you could have the program copy a different file if you wish.

        DEFINE CLASS form1 AS FORM
           TOP = 0
           LEFT = 0
           HEIGHT = 206
           WIDTH = 231
           DESKTOP = .T.
           CAPTION = "Form1"
           WINDOWTYPE = 1
           NAME = "Form1"

           ADD OBJECT command1 AS COMMANDBUTTON WITH ;
              TOP = 120, ;
              LEFT = 72, ;
              HEIGHT = 27, ;
              WIDTH = 84, ;
              CAPTION = "Run XCopy", ;
              NAME = "Command1"

           PROCEDURE command1.CLICK
              RUN /N xcopy c:\autoexec.bat c:\autoexec.bak
           ENDPROC

        ENDDEFINE

2. Click the "Run XCopy" button.

The MS-DOS box appears and disappears, and the form becomes deselected. The form
cannot get the focus and will not receive keyboard or mouse input. If you click
on the close box in the Visual FoxPro desktop, you will receive a "Cannot quit
FoxPro" message. Once this has occurred, the form will be accessible once again.
This does not happen with Desktop = .F. or with WindowType = 0 and a READ
EVENTS.
(c) Microsoft Corporation 1998, All Rights Reserved.
Contributions by Jim Saunders, Microsoft Corporation


Additional query words: kbVFp500abug kbOOP

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Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP500 kbVFP500a
Version           : WINDOWS:5.0,5.0a
Issue type        : kbbug
Solution Type     : kbpending

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