Visual C++ Version 4.1b
ID: Q154428
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The information in this article applies to:
-
The Microsoft Foundation Classes
-
Microsoft Visual C++, 32-bit Editions, version 4.1
SUMMARY
The file Vc41b.exe contains a patch to the Visual C++ versions 4.1 or
4.1a MFC DLL and run-time library to solve a number of Win32s problems.
Below is the information from the Readme.txt which is included with the
patch. See the instructions below for more information about how to
download and apply the patch.
Contents of Readme.txt file
---------------------------
Summary
-------
This patch updates MFC version 4.1 to correct several problems that occur
when running on Win32s. If you have built an MFC application with Visual
C++ 4.1 and are supporting Win32s you may have noticed one or more of the
following problems, all of which are fixed in this patch:
1. Problem with caching pointers to DLL entry points after final
FreeLibrary.
2. AfxWinInit/SetCurrentHandles benign asserts.
3. We load OLEPRO32.DLL, but store the instance handle in a global, not
process local variable. This is what is causing a failure during
IPersistMemory::Load after creating the control.
4. On process detach of an OCX, we are not cleaning up all the module
process state. This causes problems if multiple instances of an OCX
are loaded in the same or separate processes.
5. If you create a DLL that calls the AfxGetThread function and is being
used by multiple applications you can run into problems caused by data
being global and not process local.
6. Problems running multiple OCX containers as described in the following
Microsoft Knowledge Base article have been fixed. These problems were
caused by a combination of the problems described in items 4 and 5
above.
ARTICLE-ID: Q152792
TITLE: FIX: Multiple ActiveX Control Containers Under Win32s Problems
This patch includes the fixes issued in the 4.1a patch to Microsoft Visual
C++. The relevant pieces from the 4.1a Readme.txt file are appended at the
bottom of this file for your information.
How To Run the Patch, and What Gets Updated
-------------------------------------------
The following is included in the self-extracting file, Vc41b.exe:
- Readme.txt : This file.
- Patch.exe : The executable file which runs the patch script.
- Msdev41b.rtp: The patch file for the \msdev tree.
- Mfc41b.rtp : The patch file for the MFC DLLs in the \windows\system
directory.
Use the following steps to patch the MFC DLLs in your \windows\system
directory:
1. Close all applications using MFC, including Microsoft Developer
Studio.
2. Copy Patch.exe and Mfc41b.rtp into your \windows\system directory on
Microsoft Windows 95 or Microsoft Windows versions 3.x running Win32s,
or into \windows\system32 directory on Microsoft Windows NT.
3. Run the following command at a command prompt in the directory
you copied Patch.exe into:
patch mfc41b
4. Mfc41b.rtp attempts to patch all the MFC files installed in the
Windows system directory. See below for list of files:
- mfc40.dll
(Before) Size: 921,872 Date: 2/28/96 Time: 6:53a Version: 4.1.6038
(After Patch A) 921,872 5/13/96 11:39a 4.1.6130
(After Patch B) 924,432 7/11/96 12:55p 4.1.6139
- mfc40.map
(Before) Size: 977,461 Date: 2/27/96 Time: 11:37p
(After Patch B) 978,210 7/10/96 6:40p
- mfc40u.dll
(Before) Size: 922,384 Date: 2/28/96 Time: 3:16a Version: 4.1.6038
(After Patch A) 919,824 5/13/96 11:45a 4.1.6130
(After Patch B) 924,432 7/10/96 8:57p 4.1.6139
- mfc40u.map
(Before) Size: 989,498 Date: 2/27/96 Time: 11:18p
(After Patch B) 993,011 7/10/96 6:26p
- mfcd40d.dll
(Before) Size: 247,808 Date: 2/27/96 Time: 10:40p Version: 4.1.6038
(After Patch A) 247,808 5/13/96 11:46a 4.1.6130
(After Patch B) 247,808 7/10/96 5:59p 4.1.6139
- mfcd40ud.dll
(Before) Size: 255,488 Date: 2/27/96 Time: 11:05p Version: 4.1.6038
(After Patch A) 255,488 5/13/96 11:46a 4.1.6130
(After Patch B) 255,488 7/10/96 6:16p 4.1.6139
- mfcd40d.pdb
(Before) Size: 1,134,592 Date: 2/27/96 Time: 10:40p
(After Patch A) 1,134,592 5/6/96 3:03p
(After Patch B) 1,134,592 7/10/96 5:59p
- mfcd40ud.pdb
(Before) Size: 1,159,168 Date: 2/27/96 Time: 11:05p
(After Patch A) 1,159,168 5/6/96 3:27p
(After Patch B) 1,159,168 7/10/96 6:16p
- mfcn40d.dll
(Before) Size: 28,160 Date: 2/27/96 Time: 10:41p Version: 4.1.6038
(After Patch B) 28,160 7/10/96 5:59p 4.1.6139
- mfcn40ud.dll
(Before) Size: 28,160 Date: 2/27/96 Time: 11:05p Version: 4.1.6038
(After Patch B) 28,160 7/10/96 6:17p 4.1.6139
- mfcn40d.pdb
(Before) Size: 790,528 Date: 2/27/96 Time: 10:41p
(After Patch B) 790,528 7/10/96 5:59p
- mfco40d.dll
(Before) Size: 666,112 Date: 2/27/96 Time: 10:39p Version: 4.1.6038
(After Patch B) 667,136 7/10/96 5:58p 4.1.6139
- mfco40d.pdb
(Before) Size: 2,338,816 Date: 2/27/96 Time: 10:39p
(After Patch B) 2,347,008 7/10/96 5:58p
- mfc40d.dll
(Before) Size: 894,464 Date: 2/27/96 Time: 10:35p Version: 4.1.6038
(After Patch B) 894,976 7/10/96 5:55p 4.1.6139
- mfc40d.map
(Before) Size: 752,302 Date: 2/27/96 Time: 10:35p
(After Patch B) 752,486 7/10/96 5:55p
- mfc40d.pdb
(Before) Size: 2,813,952 Date: 2/27/96 Time: 10:35p
(After Patch B) 2,813,952 7/10/96 5:55p
- mfc40ud.dll
(Before) Size: 906,752 Date: 2/27/96 Time: 11:00p Version: 4.1.6038
(After Patch B) 907,776 7/10/96 6:13p 4.1.6139
- mfc40ud.map
(Before) Size: 771,290 Date: 2/27/96 Time: 11:00p
(After Patch B) 771,367 7/10/96 6:13p
- mfc40ud.pdb
(Before) Size: 2,838,528 Date: 2/27/96 Time: 11:00p
(After Patch B) 2,838,528 7/10/96 6:13p
- mfcd40d.map
(Before) Size: 213,433 Date: 2/27/96 Time: 10:40p
(After Patch B) 213,720 7/10/96 5:59p
- mfcn40d.map
(Before) Size: 49,166 Date: 2/27/96 Time: 10:41p
(After Patch B) 49,345 7/10/96 5:59p
- mfcn40ud.map
(Before) Size: 50,430 Date: 2/27/96 Time: 11:05p
(After Patch B) 50,598 7/10/96 6:17p
- mfcn40ud.pdb
(Before) Size: 798,720 Date: 2/27/96 Time: 11:05p
(After Patch B) 798,720 7/10/96 6:17p
- mfco40d.map
(Before) Size: 666,410 Date: 2/27/96 Time: 10:39p
(After Patch B) 668,293 7/10/96 5:58p
- mfco40ud.dll
(Before) Size: 669,184 Date: 2/27/96 Time: 11:03p Version: 4.1.6038
(After Patch B) 670,208 7/10/96 6:16pm 4.1.6139
- mfco40ud.map
(Before) Size: 715,044 Date: 2/27/96 Time: 11:03p
(After Patch B) 716,611 7/10/96 6:16p
- mfco40ud.pdb
(Before) Size: 2,379,776 Date: 2/27/96 Time: 11:03p
(After Patch B) 2,379,776 7/10/96 6:16p
- msvcrt40.dll ( Should come from \win32s\redist directory on VC4.1 CD )
(Before) Size: 322,048 Date: 2/27/96 Time: 11:25a Version: 4.10.6038
(After Patch B)322,048 6/20/96 10:28p 4.10.6087
- msvcr40d.dll ( Should come from \win32s\debug directory on VC4.1 CD )
(Before) Size: 439,296 Date: 2/15/96 Time: 12:43a Version: 4.10.6038
(After Patch B)444,928 2/20/96 1:05a 4.10.6038
- msvcr40d.pdb ( Should come from \win32s\debug directory on VC4.1 CD )
(Before) Size: 1,197,056 Date: 2/15/96 Time: 12:43a
(After Patch B) 1,262,592 2/20/96 1:05a
5. Use the following steps to patch the files in the \msdev tree:
a. Close all applications using MFC, including Microsoft Developer
Studio.
b. Copy Patch.exe and Msdev41.rtp to your \msdev directory.
c. Run the following command at a command prompt in the directory
that you copied Patch.exe into:
patch msdev41b
6. Msdev41b.rtp attempts to patch all the files listed below in the
\msdev tree:
- \bin\emn0n0.dll
(Before) Size: 100,112 Date: 2/16/96 Time: 4:59a Version: 4.10.6038
(After Patch A)103,696 4/10/96 8:56p 4.10.6038
(After Patch B)103,696 4/10/96 8:56p 4.10.6038
- \mfc\src\dbrfx.cpp
(Before) Size: 65,181 Date: 1/30/96 Time: 9:10a
(After Patch A) 65,183 4/8/96 4:38p
(After Patch B) 65,183 4/8/96 4:38p
- \mfc\lib\nafxcw.lib
(Before) Size: 6,652,314 Date: 2/27/96 Time: 10:12p
(After Patch A) 6,652,314 4/25/96 4:57p
(After Patch B) 6,652,292 7/10/96 5:38p
- \mfc\lib\nafxcwd.lib
(Before) Size: 7,405,604 Date: 2/27/96 Time: 10:03p
(After Patch A) 7,405,604 4/25/96 4:49p
(After Patch B) 7,405,674 7/10/96 5:31p
- \mfc\lib\uafxcw.lib
(Before) Size: 6,677,766 Date: 2/27/96 Time: 10:29p
(After Patch A) 6,677,730 5/6/96 2:52p
(After Patch B) 6,677,934 7/10/96 5:51p
- \mfc\lib\uafxcwd.lib
(Before) Size: 7,437,480 Date: 2/27/96 Time: 10:21p
(After Patch A) 7,437,480 5/6/96 2:43p
(After Patch B) 7,437,554 7/10/96 5:44p
- \mfc\lib\nafxcw.pdb
(Before) Size: 569,344 Date: 2/27/96 Time: 10:12p
(After Patch A) 569,344 4/25/96 4:57p
(After Patch B) 569,344 7/10/96 5:37p
- \mfc\lib\nafxcwd.pdb
(Before) Size: 577,536 Date: 2/27/96 Time: 10:03p
(After Patch A) 577,536 4/25/96 4:48p
(After Patch B) 577,536 7/10/96 5:31p
- \mfc\lib\uafxcw.pdb
(Before) Size: 569,344 Date: 2/27/96 Time: 10:29p
(After Patch A) 569,344 5/6/96 2:52p
(After Patch B) 569,344 7/10/96 5:51p
- \mfc\lib\uafxcwd.pdb
(Before) Size: 577,536 Date: 2/27/96 Time: 10:20p
(After Patch A) 585,728 5/6/96 2:43p
(After Patch B) 577,536 7/10/96 5:44p
- \lib\msvcrtd.pdb (Should come from \win32s\lib directory on VC4.1 CD)
(Before) Size: 159,744 Date: 2/15/96 Time: 12:43a
(After Patch B) 102,400 6/20/96 11:12p
- \crt\src\aw_env.c
(Before) Size: 8,872 Date: 1/5/96 Time: 8:51p
(After Patch B) 8,886 6/19/96 6:55p
- \mfc\src\afximpl.h
(Before) Size: 14,694 Date: 12/15/95 Time: 9:18a
(After Patch B) 14,865 7/16/96 3:35p
- \mfc\src\appinit.cpp
(Before) Size: 8,509 Date: 9/19/95 Time: 8:11a
(After Patch B) 8,687 7/16/96 3:35p
- \mfc\src\auxdata.cpp
(Before) Size: 8,056 Date: 9/19/95 Time: 8:12a
(After Patch B) 8,754 7/16/96 3:35p
- \mfc\src\build_.h
(Before) Size: 100 Date: 2/7/96 Time: 9:26a
(After Patch B) 100 7/16/96 3:35p
- \mfc\src\ccdata.cpp
(Before) Size: 21,763 Date: 9/19/95 Time: 8:12a
(After Patch B) 22,435 7/16/96 3:35p
- \mfc\src\ctlmodul.cpp
(Before) Size: 1,237 Date: 7/5/95 Time: 1:11a
(After Patch B) 1,203 7/16/96 3:35p
- \mfc\src\dbcore.cpp
(Before) Size: 94,099 Date: 1/30/96 Time: 9:10a
(After Patch B) 94,220 7/16/96 3:35p
- \mfc\src\oledata.cpp
(Before) Size: 33,304 Date: 12/15/95 Time: 9:18a
(After Patch B) 33,935 7/16/96 3:35p
- \mfc\src\olepro32.cpp
(Before) Size: 3,758 Date: 8/10/95 Time: 7:10a
(After Patch B) 4,461 7/16/96 3:35p
- \mfc\src\sockcore.cpp
(Before) Size: 31,712 Date: 1/11/96 Time: 9:08a
(After Patch B) 31,836 7/16/96 3:35p
Caveats
-------
Several of the MFC files that can get patched are optionally installed.
You may get a message in the patch log stating that a particular
file was not found, and that is OK. For example, if you did not install
the Unicode MFC libraries, the Patch program will not find them.
Potential Problems and Workarounds
----------------------------------
- During any of the steps above, the Patch program may tell you that you
already have a copy of the newer files on disk. If it tells you this
information, it will not patch the files in your \windows\system
directory. To remedy this situation, make sure that you do not have
any other copies of the files listed above in your PATH.
If the above solution does not work, run the Patch commands above
using the /NOP switch. For example, use "Patch /NOP mfc41b." This
switch tells the Patch program not to search your PATH for newer
files.
If your files still are not being patched, copy the files listed above
into a temporary directory and run the Patch command with the /NOP and
/NOS command-line options. For example, use "Patch /NOS /NOP mfc41b."
- You may get the error ept0038, indicating that a particular file
could not be deleted. This error can occur because the DLL is still
locked in memory. Be sure you have closed all applications before
running the patch. If this solution does not work, restart Windows and
run the patch before starting any other applications.
- If you run this patch on Windows NT or Windows 95, an error message
(see below) stating that the old version of the file could not be
found but one with the same name exists is displayed. No update will
be done.
wpt0036:old File not found: The C run-time DLL which is being
patched, MSVCRT40.DLL, is a Win32s specific version.
Readme from Visual C++ 4.1a Patch
---------------------------------
I. Summary
This patch updates MFC to fix a problem you may be seeing in an application
that uses the Microsoft database classes. Using certain ODBC drivers you
may get an "Out of memory" error. See below for a list of files updated and
a more complete description of the problem.
This patch also updates the debugger in the Microsoft Developer Studio to
fix a problem where you may not be stopping at breakpoints you have set in
a project that was built from a directory structure that contained long
names. This problem did not exist in Visual C++ 4.0. See below for a list
of files updated.
II. Description of MFC Bug
An error can occur when mapping a CString to a SQL_LONGVARCHAR,
SQL_VARCHAR, or other SQL data type field if a driver returns a large
precision value from SQLDescribeCol() for the column.
A bug in the MFC ODBC Database classes results in MFC trying to allocate a
large chunk of memory to store data that might have this large precision.
In some cases, such as using a memo field with the FoxPro Desktop ODBC
driver, a memory allocation of 1 gigabyte may be attempted. Or, as is the
case with the Visual FoxPro driver, the MFC Database Classes will try to
allocate a negative number of bytes because the return value of the driver
is 2 gigabytes and then MFC adds 1, which causes the signed variable to
wrap into a negative value. In this case, an assertion occurs in
GetBufferSetLength() on line 447 of Strcore.cpp:
ASSERT(nNewLength >= 0);
Mapping a CString to a SQL Server text field produces the same result.
The problem occurs only when mapping CString variables to
variable-length fields using the RFX_Text() function.
MORE INFORMATION
The following files are available for download from the Microsoft
Download Center. Click the file names below to download the files:
Vc41b.exe
For more information about how to download files from the Microsoft
Download Center, please visit the Download Center at the following Web
address
http://www.microsoft.com/downloads/search.asp
and then click How to use the Microsoft Download Center.
NOTE: Use the -d option when running Vc41b.exe to decompress the
file and recreate the proper directory structure.
Additional query words:
patch upgrade
Keywords : kbfile kbnokeyword kbMFC kbVC
Version :
Platform : NT WINDOWS
Issue type :