FIX: UserControl on Active Desktop Causes AV Shutdown in VB DLL

ID: Q223090

The information in this article applies to:

Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, versions 5.0, 6.0
on the following platforms: NT

SYMPTOMS

If there is a user control on Active Desktop, and the shell is shut down, an access violation occurs in Internet Explorer.

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

Start a new ActiveX Control project in Visual Basic. Leave the default name Project1. UserControl1 is created by default.

Compile the project to generate Project1.ocx, and save the project.

Use the Package and Deployment Wizard (PDW) to create an Internet download package.

If not already installed, add the Windows Desktop Update component. From the Control Panel, click Add/Remove Programs, and select Microsoft Internet Explorer 4.0. Click Add/Remove and then select the appropriate option.

Right-click the desktop and select Properties from the shortcut menu.

Select the Web tab from the Display Properties dialog box.

Make sure View my Active Desktop as a Web page is selected, and click New.

Click No in the next dialog box, and then browse to the .htm page hosting our control (Project1.htm).

Select Project1.htm and click OK. You should see that the UserControl is now part of the desktop.

Close the shell either by logging off or selecting Shut Down from the Start button.

You will see either an Access Violation in the Explorer process at a location where the Msvbvm60.dll was loaded or a dialog box stating the Explorer is not responding. If the user turns off the Active Desktop before shutting down the shell, then this problem will not occur.

Additional query words:


Keywords          : kbservicepack kbActiveDesktop kbCtrl kbVBp600 kbGrpInet kbVS600sp2 kbVS600SP1 kbVS600sp3fix 
Version           : WINDOWS:5.0,6.0
Platform          : WINDOWS 
Issue type        : kbbug

Last Reviewed: May 27, 1999