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Sender: cygwin-owner AT sourceware DOT cygnus DOT com
Date: Mon, 16 Aug 99 11:49:57 PDT
From: jim AT nga DOT com (Jim Roy)
Message-Id: <9908161849.AA05189@nga.nga.com>
To: cygwin AT sourceware DOT cygnus DOT com
Subject: SUMMARY: console on demand?


Thanks all.

My original question was how to avoid getting a window if you
don't need one.

Compiling with the -mwindows flag solved that.
"Console" mode programs have a console window attached by default,
but "GUI" mode programs do not.

That led to a second problem.  How to use printf() and it's relatives
with a console window in a GUI mode program, when you DO need to
interact with the user.

A chain of calls like:

> handleout = GetStdHandle (STD_OUTPUT_HANDLE);
> fdout = _open_osfhandle(handleout);
> fpin = fdopen(fdout, "w");
> fprintf( fpin, "blurf");

solves the problem.

Tol suggests a more direct method, using freopen(), but it does
not seem to work for me.  Perhaps, as he suggests it works with
msvcrt, but not with crtdll.

Thanks again,

---
Jim Roy                      voice  541 757 7231
Sys. Admin.                  fax    541 757 7331
NW Geophysical Assoc.        http://www.nga.com
Corvallis Or. US
---

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