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Date: Sun, 29 Mar 2009 19:21:39 +0100
Message-ID: <416096c60903291121w1e4ba39ch96c738153c74646@mail.gmail.com>
Subject: Re: -mwindows and --Wl,subsystem,windows
From: Andy Koppe <andy DOT koppe AT gmail DOT com>
To: cygwin AT cygwin DOT com
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Dave Korn:
> Andy Koppe wrote:
>> According to this post on the gcc mailing list a few years back, gcc's
>> -mwindows option should imply --Wl,subsystem,windows:
>>
>> http://gcc.gnu.org/ml/gcc-help/2004-01/msg00225.html
>
> =A0 Yep, it still does.

Ah, you're right. I seem to have confused myself about this while
grappling with MinTTY issue 39: "Command shell window remains open in
Windows 7 Beta".

It would appear that something's changed in how Windows deals with
Cygwin applications. The fact that MinTTY actually is compiled as a
"windows" subsystem app after all makes this even more curious.

I'm finding that MinTTY itself causes a console to open without any
output that would necessitate it. That can be got rid of with
FreeConsole(), but then the command invoked by MinTTY (using forkpty()
and execve()) opens a console anyway. Apart from that, things work
fine though.

rxvt uses the hack below to just hide any console window. Perhaps I
should just go with that, but I'm a bit concerned that it might end up
hiding the wrong console, or that the console might reappear for some
reason anyway.

Andy


char app_name[40];
sprintf(app_name, "rxvt%08x", (unsigned int)GetCurrentThreadId());
...
SetConsoleTitle( app_name );
while ((conwin =3D FindWindow( NULL, app_name))=3D=3DNULL)
    Sleep( 40 );
ShowWindowAsync(conwin, SW_HIDE);

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