Re: cin and binary mode

"Tom Widmer [VC++ MVP]" <>
Mon, 25 Sep 2006 12:43:08 +0100
manimau wrote:

Is there any chance of slightest light at the end of the tunnel in pursuing
the cin and binary mode operation together?

I am trying to see if I can open the cin in binary mode for read operation.
I am using VC++ with VS .NET 2003

While using VS 6.0, it was a piece of cake, but since there were a lot of
things just removed in VC++ .NET 2003 version, I am having a hard time
converting this little piece of code....

previously with VS 6.0 it was,

istream_withassign myFile;
filebuf *myFileBuf;
myFileBuf = new filebuf (_fileno(stdin));
myFile = myFileBuf; // stream object is stream buffer

if (!(, nBytes)))
        if (myFile.eof())
            status = M_EndOfFile;
Which worked just fine.

Any ideas or hopes of converting it to VC++ .net 2003?

This should work on 2003 and 2005 (and probably VC6 as well):

#include <iostream>
#include <stdio.h>
#include <io.h>
#include <fcntl.h>

_setmode(_fileno(stdin), _O_BINARY);
std::istream is(std::cin.rdbuf());
//or std::istream& is = std::cin;

_setmode is MS's version of the POSIX function setmode, so this solution
should port to UNIX simply by removing the start _s.


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