Using beamer's \uncover with the listings package

Question

I want use listings package with uncover command. He's my code

\usepackage{listings}
\lstnewenvironment{Exemplecode}{}{}

\newenvironment{Framecode}[1]
{\begin{frame}[fragile, environment=Framecode]{#1}}
{\end{frame}}

\begin{frame}{Quelques Rappels}
 \begin{itemize}
   \item<1-> Les Alias.\newline
     \uncover<2->{\begin{Exemplecode}a \end{Exemplecode}}
 \end{itemize}
\end{frame}

I get the following error:

Package Listings Warning: Text dropped after begin of listing on input line 4.

)
! Missing } inserted.
<inserted text> 
                }
l.19 \end{Framecode}

?

EDIT: Thanks for the advice.

This is an exemple of my code:

\documentclass{beamer}
\usepackage[french]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{microtype}
\usepackage{xcolor}
\usepackage{listings}
\lstnewenvironment{Exemplecode}{}{}

\usetheme[hideothersubsections]{berkeley}
\setbeamerfont{block body}{size=\tiny}
\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{footline}[frame number]

\newenvironment{Framecode}[1]
{\begin{frame}[fragile, environment=Framecode]{#1}}
{\end{frame}}

\begin{document}

\begin{Framecode}{Quelques Rappels}
 \begin{itemize}
   \item<1-> Les Alias.\newline
   \begin{Exemplecode} a \end{Exemplecode}
 \end{itemize}
\end{Framecode}
\end{document}

Is it possible to do what I want to do ?

You can use the tricks shown in How to make overlay still work inside lstlisting environment? and Two code blocks working syncronously. But ultimately it depends on how you want to show the code. — Claudio Fiandrino, Jun 12 '13 at 17:00

score 4 · Accepted Answer · answered Jun 12 '13 at 18:50

The lstlisting environment (and any descendants created with \lstnewenvironment) require the \end{...} to be standalone in a dedicated line. This is necessary because of the verbatim processing: Basically listings gobbles all lines until it finds a line with the respective \end{...} command:

\documentclass{beamer}
\usepackage[french]{babel}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{microtype}
\usepackage{xcolor}
\usepackage{listings}
\lstnewenvironment{Exemplecode}{}{}

\setbeamerfont{block body}{size=\tiny}
\definecolor{epi_brown}{RGB}{139,69,19}
\setbeamercolor{logo}{bg=white}
\setbeamertemplate{navigation symbols}{}
\setbeamertemplate{footline}[frame number]

\newenvironment{Framecode}[1]
{\begin{frame}[fragile, environment=Framecode]{#1}}
{\end{frame}}

\begin{document}

\begin{Framecode}{Quelques Rappels}
 \begin{itemize}
   \item<1-> Les Alias.\newline
   \begin{Exemplecode} 
     a 
   \end{Exemplecode}
 \end{itemize}
\end{Framecode}
\end{document}

Thanks for all ! I will ALWAYS write my latex code properly now even when i want just test. — Lumy, Jun 12 '13 at 23:34

Using beamer's \uncover with the listings package

1 Answers1