Microsoft KB Archive/221738

= FIX: Memory Leak With SET SYSMENU OFF =

Article ID: 221738

Article Last Modified on 8/28/2003

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APPLIES TO


 * Microsoft Visual FoxPro 5.0a
 * Microsoft Visual FoxPro 6.0 Professional Edition

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This article was previously published under Q221738



SYMPTOMS
If you repeatedly run a form and the system menu is set off, the following error may eventually occur:

There is not enough memory to complete this operation.

After that message appears, Visual FoxPro may have difficulty performing other tasks and report more insufficient memory messages.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article. This bug was corrected in Visual Studio 6.0 Service Pack 3. For more information about Visual Studio service packs, please see the following articles in the Microsoft Knowledge Base:

194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

194295 HOWTO: Tell That Visual Studio 6.0 Service Packs Are Installed



Steps to Reproduce Behavior
  Run the following code from a program (.prg) file: CLEAR ALL PUBLIC Pubrunform Pubrunform=.T.  SET SYSMENU OFF

ON KEY LABEL ctrl+f8 _SCREEN.FORMS(1).RELEASE ON ESCAPE Pubrunform=.F.  X=1 DO WHILE Pubrunform=.T.   WAIT '' TIME .08 && take this out and get ox or forms && is not an object ox=CREATEOBJECT('form') ox.CAPTION = ALLTRIM(STR(X)) +' iterations - press escape to quit' KEYBOARD '{ctrl+f8}' ox.SHOW(1) X=X+1 ENDDO ON KEY LABEL ctrl+f8 SET SYSMENU TO DEFAULT SET SYSMENU AUTO ON ESCAPE RETURN  NOTE: If you get either of these messages press Ignore:

ox is not an object.

-or-

forms is not an object.



Eventually, you get the following error:

There is not enough memory to complete this operation.

The error usually occurs after about 500 iterations. The same behavior happens in Visual FoxPro 5.0a and 6.0.

If you look at the VFP6.exe file in the Windows NT 4.0 Task Manager, you will see the memory usage increase. However, two Visual FoxPro SYS functions that look at memory usage, SYS(1016) and SYS(1011), do not increase. The error does not occur without the SET SYSMENU OFF command.

Additional query words: KBDSE

Keywords: kbbug kbfix kbcontainer kbctrl kbvs600sp3fix KB221738

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