[Gnuplot-py-users] Unable to get reliable operation on Win32

[Grant E. <gr...@vi...>]

I feel like I've spent the past 3 days beating my head against
a wall: no matter what I do, I can't get gnuplot-py to work
reliably on Win2K or WinXP.

It seems to work fine in the following situations:

 * Program called "normally" (e.g. python foo.py) with current
   directory containing pgnuplot.exe and wgnuplot.exe.

 * Program bundled via py2exe and called via shortcut icon
   starting in directory containing [pw]gnuplot.exe

 * Program bundled via py2exe and called via shortcut icon
   starting in different directory.

 * Program bundled via Py2exe and called via command-line from
   anywhere.

What refuses to work is when the program is started by clicking
on a file whose type has been associated with the program.  In
that case, I always get an "invalid parameter" IOError when
gp_win32.py writes to the pipe in its __call__ method.

I've switch gp_win32.py so that it uses subprocess instead of
os.popen, and that doesn't seem to help. I get either the same
error or I get an "invalid handle" when the process is being
started.

Can anybody point me towards documentation on how to get
reliable operation on Win32?

It's really not possible to describe how much I hate working
with Microsoft Windows...

-- 
Grant Edwards
gr...@vi...