Knowledge Base

FIX: Assertion Line 257 in File Dlgprop.cpp

Article ID: 167692

Article Last Modified on 11/21/2006

Microsoft Foundation Class Library 4.2, when used with:
- Microsoft Visual C++ 5.0 Enterprise Edition
- Microsoft Visual C++ 5.0 Professional Edition

This article was previously published under Q167692

SYMPTOMS

When you display a property sheet using MFC (with DIALOG-type templates for the property pages) on a Windows 95 machine with ComCtl32 version 4.00 and MFC42X.dll version 4.21.7022, assertions occur on line 257 of DlgProp.cpp. An assertion is generated for each page that is present on the property sheet.

CAUSE

This behavior is due to a bug in the code that checks whether the template is DIALOGEX type.

RESOLUTION

The assertion can be safely ignored.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been corrected in Visual Studio 97 Service Pack 1.

For additional information about the Visual Studio 97 Service Pack 1, please see the following article in the Microsoft Knowledge Base:

170365 INFO: Visual Studio 97 Service Packs - What, Where, and Why

MORE INFORMATION

Steps to Reproduce Behavior

Create an Appwizard-generated application.
Add code to display a Property Sheet with pages on it.
Make sure the dialog templates for the pages are the DIALOG type.
Compile the program and run it on a computer that has the versions of the DLLs mentioned above in the SUMMARY section.
Invoke the code to display the property sheet.

(c) Microsoft Corporation 1997, All Rights Reserved. Contributions by Sridhar S. Madhugiri, Microsoft Corporation

Additional query words: assert property page sheet

Keywords: kbbug kbdlg kbfix kbnoupdate kbuidesign kbvs97sp1fix KB167692