DOCUMENT:Q193472 21-MAY-1999 [foxpro] TITLE :FIX: Exception Error Exiting Top-Level Form App in Windows 95 PRODUCT :Microsoft FoxPro PROD/VER:WINDOWS:6.0 OPER/SYS: KEYWORDS:kbservicepack kbContainer kbCtrl kbDCOM kbvfp600 kbvfp600bug kbVS600sp2 kbVS600SP1 kbVS ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual FoxPro for Windows, version 6.0 ------------------------------------------------------------------------------- SYMPTOMS ======== You are using an application where the main form is a Top-Level form, and you suppress the display of the Visual FoxPro desktop with the SCREEN = OFF command in a Config.fpw file. Then, you create a distribution using the Setup Wizard and install this distribution on a computer using Windows 95. When you exit the Top-Level form to close the application, you might see an error dialog box, such as the following: Fatal Exception: error code=c0000005 RESOLUTION ========== You can work around this issue by installing the Distributed Component Object Model (DCOM) for Windows 95 or by installing Internet Explorer version 4.0 or later. You can install DCOM for Windows 95 from the following Web URL: http://msdn.microsoft.com/library/default.htm You can install Internet Explorer 4.0 or later from the following Web URL: http://www.microsoft.com/ie/download/windows.htm 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 ================ The installation of either DCOM for Windows 95 or Internet Explorer 4.0 eliminates the error. The download for DCOM for Windows 95 version 1.2 is 1.2MB and the installed files are new version replacements for existing files. There is information about redistribution on the DCOM 95 Internet site referenced in the RESOLUTION section. Installing Internet Explorer 4.0 gives Internet browser functionality, but its installation also requires more disk space than DCOM 95. Steps to Reproduce Behavior --------------------------- 1. Create a new Visual FoxPro project named TestProj. 2. Add a program called Main.prg to the project. It should contain the following code: PUBLIC oform1 oform1=NEWOBJECT("form1") oform1.Show READ EVENTS RETURN DEFINE CLASS form1 AS form ShowWindow = 2 AutoCenter = .T. Caption = "Form1" Name = "form1" ADD OBJECT command1 AS commandbutton WITH ; Top = 180, ; Left = 144, ; Height = 27, ; Width = 84, ; Caption = "Quit", ; Name = "Command1" PROCEDURE QueryUnload Release thisform CLEAR EVENTS ENDPROC PROCEDURE command1.Click Release thisform CLEAR EVENTS ENDPROC ENDDEFINE 3. Create a file called Config.fpw in the directory with your project and add the following line: SCREEN = OFF 4. Add this file to the project. Click the Other tab in the Project Manager. Select the Text Files item in the list, click the Add button, type "Config.fpw" (without the quotation marks) in the Select file text box, then click OK. 5. Mark the Config.fpw file as included by right-clicking it in the Project Manager, and then choose Include from the Context menu. 6. Build the project into an executable, and save it as Testproj.exe. 7. Place the Testproj.exe file into a directory by itself, such as c:\testproj. 8. Run the Setup Wizard. 9. Select the directory containing the executable file created in the "Setup Wizard - Step 1," and then click Next. 10. In the Setup Wizard dialog box for step 2, select the run-time check box and then click Next. 11. In step 3 of the Setup Wizard dialog box, select a directory and any of the disk image check boxes and then click Next. 12. In step 4 of the Setup Wizard dialog box, type "Test App" (without the quotation marks) in the Setup dialog box Caption text box, enter None in the Copyright information text box, and then click Next. 13. In step 5 of the Setup Wizard dialog box, type "VFP Test Apps" (without the quotation marks) in Program group text box, and then click Next. 14. In step 6 of the Setup Wizard dialog box, check the PM item check box, type "Test App" (without the quotation marks) in the Description text box, and type "%s\testproj.exe" (without the quotation marks) in the Command line text box. Click OK, and then click the Finish button twice. Next, click the Done button in the Disk Statistics dialog box when it appears. 15. Install the program from the 144Disk\Disk1, Netsetup, or Websetup directory that the Setup Wizard creates to a Windows 95 computer. This computer must not have Visual Studio, DCOM 95, or Internet Explorer 4.0 installed. 16. Run the .exe file. 17. Click the Quit button or close the form. The form disappears and then an error dialog box appears with the following text: Fatal Exception: error code=c0000005 This error does not occur if DCOM for Windows 95 or Internet Explorer 4.0 is installed on the Windows 95 computer. This error does not occur in Windows NT 4.0. Additional query words: ====================================================================== Keywords : kbservicepack kbContainer kbCtrl kbDCOM kbvfp600 kbvfp600bug kbVS600sp2 kbVS600SP1 kbVS600sp3fix Technology : kbVFPsearch kbAudDeveloper kbVFP600 Version : WINDOWS: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. 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