pipe & zvt

[francex <francex tiscali it>]

Hi,

I have resolved my old problems with zvt (2 zvt problems +1), but now there is 
a new problem:
After fork zvt term ( zvt_term_forkpty ) and launched with 
execle (shell->str, name->str, NULL, env_copy); (classic gnome doc for zvt 
term example program),
if I try from my 'principal' program to popen() for example to "ls", anytime 
works anytime not. Why?? 

Thank you very much
and sorry for my english

France