BUG: GP Fault in Comctl32.dll with IE 4.0 Installed

Last reviewed: February 18, 1998
Article ID: Q176349

The information in this article applies to:

Microsoft Internet Explorer, version 4.0

SYMPTOMS

You may receive the following GP Fault when updating toolbar buttons in any application. This seems to happen most likely when removing a button by dragging it off the toolbar.

The instruction at "70dc2ad4" referenced memory at "0x0000008." The memory could not be "read."

-or-

<Application Name> caused an exception 03H in module KERNEL32.DLL at 0137:BF767D8.

CAUSE

When dragging a button off the toolbar, you'll want to delete the button since it will no longer appear. When the button is released, a ButtonUp Message is handled by COMCTL32. You issue an EndDrag message and then continue processing the Button Up Message. Your EndDrag routine should be where the Delete Button code exists so once it returns to the ButtonUp Message code, you do not have a button object anymore. The NULL button then tries to get de-referenced and this causes the GP Fault.

RESOLUTION

Obtain the following fix or wait for the next Microsoft Internet Explorer version 4.0 service pack.

This fix should have the following timestamp:

   For Windows NT 4.0 users:
      11/17/97 4.72.2106.4 462,608 bytes  COMCTL32.DLL

   For Windows 95 users:
      11/17/97 4.72.2106.4 449,296 bytes  COMCTL32.DLL

This hotfix has been posted to the following Internet location:

   ftp://ftp.microsoft.com/softlib/mslfiles

Both Comctl32.dll files have been combined in a self-installing archive at this FTP location. Simply download the following file and execute it to install the correct Comctl32.dll automatically on the operating system you're using:

   11/30/97 4.71.0603.0 503,824 bytes  40COMUPD.EXE

NOTE: Service Pack 3 must be applied to Windows NT 4.0 prior to applying this fix.

STATUS

Microsoft has confirmed this to be a problem in Internet Explorer version 4.0. A supported fix is now available, but has not been fully regression- tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.

Keywords          : msiexplore kberrmsg
Technology        : kbInetDev
Version           : 4.0
Platform          : WINDOWS
Issue type        : kbbug

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Last reviewed: February 18, 1998
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