Article ID: 104638
Article Last Modified on 11/21/2006
APPLIES TO
- Microsoft Foundation Class Library 4.2, when used with:
- Microsoft Visual C++ 1.0 Professional Edition
This article was previously published under Q104638
SYMPTOMS
An attempt to set the status of a file using the function CFile::SetStatus results in a CFileException. If you do not have an exception handler defined, the result will depend on what the target type for the application is:
- If it is a Win32-based application, a modal dialog box will pop up that says the command failed.
- If running a console application, you will see output similar to:
CAUSE
This behavior occurs whenever the CFileStatus member m_mtime is nonzero. There is a coding problem that incorrectly throws an exception when updating the file time.
The following console application duplicates this error:
/* Build as a console application using ** Microsoft Foundation Classes ** Be sure that TEMP.DAT file exists in the same directory. */ #include <afx.h> CFileStatus fs; void main(void) { CFile::GetStatus("TEMP.DAT",fs); CFile::SetStatus("TEMP.DAT",fs); }
RESOLUTION
To work around this problem, update the Microsoft Foundation Class (MFC) library files by making a modification to the MFC source file FILEST.CPP. Remove the semicolon from the end of the "if" statement in line 134:
Change the following:
if (!SystemTimeToFileTime((LPSYSTEMTIME)&sysTime, pFileTime));
to the following:
if (!SystemTimeToFileTime((LPSYSTEMTIME)&sysTime, pFileTime))
You must then rebuild the MFC libraries. For more information on building these library files, refer to:
- Appendix B of the online "Class Library User's Guide" -or-
- The README.TXT file in the MSVC\MFC\SRC directory
Here are two ways to build a debug and non-debug version of the MFC Library for Windows NT:
Run the NMAKE command from the \MSVCNT\MFC\SRC directory.
The debug version:
NMAKE MODEL=N TARGET=W DEBUG=1 CODEVIEW=2
The release version:
NMAKE MODEL=N TARGET=W DEBUG=0
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 Microsoft Visual C++ 32-bit Edition, version 2.0.
Keywords: kbbug kbfileio kbfix KB104638