Mail Archives: cygwin/2008/01/10/18:55:42
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On Fri, 11 Jan 2008, Sven Köhler wrote:
> > However, the above is *not* equivalent to using run.exe in that it will
> > not hide the console window (try it from a GUI).
>
> Just tested it. It's not true.
>
> I compiled my program with "gcc -o /bin/myrun.exe -mwindows" and
> executed "c:\cygwin\bin\myrun.exe /bin/sleep 60" from Windows Explorer.
>
> No console window and sleep.exe runs.
>
> Also "c:\cygwin\bin\myrun.exe /bin/rxvt" works as expected. No console
> window.
Actually, -mwindows just says that myrun.exe should not pop up a console
window. The child process is a console app, and would have still popped
up a console. Except that in Cygwin 1.5.x, spawnve always set wShowWindow
to SW_HIDE before calling CreateProcess if the parent didn't have a tty,
so, in effect, execve was doing the same as what run.exe was doing.
Now, in Cygwin 1.7.x (a.k.a. CVS HEAD), this is no longer the case (since
revision 1.243 of spawn.cc). The comment simply says "Drop
pty_needs_alloc_console check" -- maybe Corinna can explain why it was
dropped. So your program will not work as expected in the snapshots.
Igor
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_ pechtcha AT cs DOT nyu DOT edu | igor AT watson DOT ibm DOT com
ZZZzz /,`.-'`' -. ;-;;,_ Igor Peshansky, Ph.D. (name changed!)
|,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski
'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
"That which is hateful to you, do not do to your neighbor. That is the whole
Torah; the rest is commentary. Go and study it." -- Rabbi Hillel
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