\doc\web\98\01\archive.txt
Arthur Hu C++ gotcha file
1-6-97

Keywords: Microsoft MFC/Visual C+++, archive, serialize

Question: I'm trying to write out and read back an archive, but the
file does not write - it creates the file of 0 length, but there's
nothing to read back.

Answer: The file won't actually be written out until the CFile
destructor is called. The solution is to write the statements inside
a block so that after you are done, the local stack-allocated CFile
object is destroyed without having to return from another routine
level. Or put the code into another level, which is probably a good
idea anyway if there is any complexity at all.

	{ // Need to either put this in a "block, or put it into 
      // its own procedure entirely.
		CFile ProbeWriteFile;
		CFileException fileException;
		CString ProbeFileName = _T("probe.prb");
		CArchive ArchiveWrite (&ProbeWriteFile, CArchive::store);
		GProbeCard->Serialize (ArchiveWrite);
	}
    // file will be zero length until it gets this far

	// now ready to read the file back in