[Gmsh] Simple console question

[Christophe Geuzaine]

Joseph D Brunett wrote:
> I am currently using the precompiled gmsh.exe version 1.60.1 on a Windows XP
> SP2 machine.  In the interactive and non-interactive modes the software
> works very well (very nice!).  
> 
> However, I am unable to get any output at the command prompt from the
> executable.  For example "gmsh -help" does not return any of the help
> information and Options->General->Output->"Print messages on terminal" does
> not result in output at an XP command prompt during execution.  

I think it's due to the fact that we compile Gmsh as a "GUI Mode
Application" on Windows (so that we don't have the console window
showing up every time we launch Gmsh). As stupid as it sounds, Windows
then seems to prevent *any* output to the console, even if the
application is launched from the commands line.

One solution is to use a more capable shell. I'm using the "bash" shell
that comes with cygwin (www.cygwin.com).

Another solution is to recompile Gmsh from the sources and remove the
-mwindows and --subsystem,windows from the link line. But this has the
annoying side effect that you always have a console showing up when you
run the application.

Christophe

> 
> I expect this is some type of Windows XP issue, but I have yet to determine
> its cause.  Does anyone out there know what must be done to obtain
> console/terminal output?  
> 
> Also, I don't suppose it is possible to write text to a file (say Fprinf)
> from within the .geo scripting language, rather than using the Printf or
> System call to the console?  
> 
> I am using a number of translations/rotations of preexisting facets, and
> want to be able to create a file that tracks these changes with direct
> references to the numbering scheme in the msh file.  The unrolled geometry
> file contains the automatic numbering, but loses the "heritage" information.
> So, I'm hoping to write it to the console as the file runs and store that to
> a file.
> 
> Thanks!
> 
> JDB
> 
> 
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-- 
Christophe Geuzaine
Assistant Professor, Case University, Mathematics
http://www.case.edu/artsci/math/geuzaine