Thanks for your answer.
My problem is that i really don't know how to use this framed.sty
I m not an advanced user of latex.
I try to put this on my preambule
\usepackage{/home/doutrele/latex/framed}
\newenvironment{lyxcode}
{\begin{framed}
{\begin{list}{}{
\setlength{\rightmargin}{\leftmargin}
\raggedright
\setlength{\itemsep}{0pt}
\setlength{\parsep}{0pt}
\normalfont\ttfamily}%
\item[]}
{\end{list}}
{\end{framed}}
and i got the following error
Runaway argument?
{\begin {framed} {\begin {list}{}{ \footnotesize \setlength {\rightmargin
\ETC.
! File ended while scanning use of \@newenv.
does someone know what happened?
--
Eric Doutreleau
I.N.T | Tel : +33 (0) 160764687
9 rue Charles Fourier | Fax : +33 (0) 160764321
91011 Evry France | email : [EMAIL PROTECTED]
