Converting a FILE* to a HANDLE ?

I have a program that has code that outputs text to both
STD_OUTPUT_HANDLE and to the stdout FILE*. I want to redirect
both of these to the same file log file.

If I use SetStdHandle() to redirect STD_OUTPUT_HANDLE to go to
a file, then output to stdout doesn't go there; if I use
freopen() to redirect stdout, then output to STD_OUTPUT_HANDLE
doesn't go there; if I do both, then output from both goes
there, but the output is jumbled a little presumeably because
the two buffers aren't synchronized.

What I think would solve this would be to get a file HANDLE for
a FILE*, i.e., convert the FILE* for stdout after being
redirected using freopen() to a HANDLE, then pass that handle to
SetStdHandle().

Is this possible? Can I get a HANDLE from a FILE*? If not, how
can I do what I want?

- Paul

Paul J. Lucas wrote:
[color=blue]
> I have a program that has code that outputs text to both
> STD_OUTPUT_HANDLE and to the stdout FILE*. I want to redirect
> both of these to the same file log file.[/color]
[color=blue]
> What I think would solve this would be to get a file HANDLE for
> a FILE*, i.e., convert the FILE* for stdout after being
> redirected using freopen() to a HANDLE, then pass that handle to
> SetStdHandle().[/color]

You can do it in two steps, use _fileno() to get the CRT file descriptor
for the FILE stream and the _get_osfhandle() to get the HANDLE for the
CRT file descriptor. After you have used freopen() to redirect stdout to
the log file, try this:

SetStdHandle((HANDLE) _get_osfhandle(_fileno(stdout)));

--
Olof Lagerkvist
ICQ: 724451
Web: [url]http://here.is/olof[/url]