FIX: The CMenu::GetMenuString method truncates menu strings that longer than 256 characters

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Article ID: 217208 - View products that this article applies to.
This article was previously published under Q217208
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SYMPTOMS

The CMenu::GetMenuString method truncates menu strings longer than 256 characters. This problem is most commonly seen when retrieving a file name from the "most recently used" list on the File menu. These file names are occasionally longer than 256 characters.

CAUSE

The CMenu member function int CMenu::GetMenuString(UINT nIDItem, CString& rString, UINT nFlags) const, hard codes the maximum length for a retrieved menu string at 256 characters. See VC98\MFC\Include\Afxwin.h, line 1043.

RESOLUTION

To work around this problem, use the LPTSTR version of this function; for example, int CMenu::GetMenuString(UINT nIDItem, LPTSTR lpString, int nMaxCount, UINT nFlags) const.

STATUS

Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.

This bug was corrected in Visual Studio 6.0 Service Pack 3. For more information about Visual Studio service packs, click the following article numbers to view the articles in the Microsoft Knowledge Base:
194022 Visual Studio 6.0 service packs, what, where, why
194295 How to tell that a Visual Studio service pack is installed

MORE INFORMATION

Steps to reproduce the behavior

  1. Use CMenu::AppendMenu(UINT nFlags, UINT nIDNewItem, LPCTSTR lpszNewItem) to append a menu item longer than 256 characters in length.
  2. Retrieve the menu item using CMenu::GetMenuString(UINT nIDItem, CString& rString, UINT nFlags).
RESULTS: Note that the string is truncated to a length of 255 characters.

Properties

Article ID: 217208 - Last Review: February 21, 2014 - Revision: 4.1
APPLIES TO
  • Microsoft Foundation Class Library 4.2, when used with:
    • Microsoft Visual C++ 6.0 Enterprise Edition
    • Microsoft Visual C++ 6.0 Professional Edition
    • Microsoft Visual C++, 32-bit Learning Edition 6.0
Keywords: 
kbnosurvey kbarchive kbtshoot kbbug kbfix kbnoupdate kbuidesign kbqfe kbvs600sp3fix kbfunctions KB217208

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