DOCUMENT:Q221738 20-MAY-1999 [foxpro] TITLE :FIX: Memory Leak With SET SYSMENU OFF PRODUCT :Microsoft FoxPro PROD/VER:WINDOWS:5.0a,6.0 OPER/SYS: KEYWORDS:kbservicepack kbContainer kbCtrl kbvfp500aBUG kbvfp600 kbvfp600bug kbVS600sp2 kbVS600SP ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual FoxPro for Windows, versions 5.0a, 6.0 ------------------------------------------------------------------------------- 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 this to be a bug in the Microsoft products 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: Q194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why Q194295 HOWTO: Tell That Visual Studio 6.0 Service Packs Are Installed MORE INFORMATION ================ Steps to Reproduce Behavior --------------------------- 1. 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 2. 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 : kbservicepack kbContainer kbCtrl kbvfp500aBUG kbvfp600 kbvfp600bug kbVS600sp2 kbVS600SP1 kbVS600sp3fix kbGrpDSFox Technology : kbVFPsearch kbAudDeveloper kbVFP600 kbVFP500a Version : WINDOWS:5.0a,6.0 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.