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Message-ID: | <474F0D22.1010806@wbemsolutions.com> |
Date: | Thu, 29 Nov 2007 14:04:02 -0500 |
From: | Jim Marshall <jim DOT marshall AT wbemsolutions DOT com> |
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To: | cygwin AT cygwin DOT com |
Subject: | Re: Reading and writing to a cygwin terminal from a WINMAIN() windows application? |
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Josef Karthauser wrote: > Hi there, > > I'm writing a windows "winmain()" application which talks to the > console, and am having trouble getting it to write() to a cygwin console > window. I was hoping that someone on this list might be able to aid me. > > The application is a dual graphics/CLI program, and so needs to detect > whether it is running in a terminal first. If it is then it runs in > console mode, otherwise it opens a graphics window (using directx). As > such it has a winmain() instead of a main(), and therefore the > stdin/stdout channels aren't immediately available to it. > > Here's what it does: > > // If we can attach to the parent terminal then we were run in a > console window. > if (AttachConsole(ATTACH_PARENT_PROCESS)) > { > m_CLIApp = true; > } Have you tried to call GetLastError to see why the attach fails? > > ... > > If (m_CLIApp) { > // XXX Test output to the console. Why doesn't this > approach work in a cygwin console window? > // XXX Where does the output go in that case? > char s[] = "This is the console\r\n"; > unsigned long cChars; > WriteConsole(GetStdHandle(STD_OUTPUT_HANDLE), s, > lstrlen(s), &cChars, NULL); > } > > Does anyone know why this doesn't output to a cygwin console, although > it does if started in a cmd shell? > > Joe > -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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