This tip comes from a couple of posts in comp.os.ms-windows.programmer.tools.mfc...

Hi!

I'm an MFC newbie and I've been struggling with the file I/O
aspects of C++ / MFC.

I want to just read in (and write out) a text file, but
when I use ClassWizard, it seems to want to stick some
kind of versioning information in the I/O stream (like
its "typing" each kind of file).

Can anyone point to an example, or give me a clue on the
right way to implement the file i/o?

Thanks!


If you just want to read/write a file, then you can do it with CFile.
For example:

	CFile myFile;
	char szBuffer[40];

	// put some data in c:\myfile.dat
	myFile.Open("c:\\myfile.dat", CFile::modeCreate);
	lstrcpy(szBuffer, "put this in the file");
	myFile.Write(szBuffer, lstrlen(szBuffer));
	myFile.Close();

	// read from c:\myfile.dat
	myFile.Open("c:\\myfile.dat", CFile::modeRead);
	myFile.Read(szBuffer, sizeof(szBuffer));
	myFile.Close();

Abu Wawda
wawda@scf.usc.edu


> Try CStdioFile. It allows you to use very simple functions like
> ReadString() and WriteString() to do file IO.

Fantastic!  I have learned something new!  God I love this....  I have
been using the fopen and fgets for so long, and now I can drop them.
Hmmmmm, maybe looking at the manuals would be a good thing......