Framing \frame using mdframed with beamerarticle

Question

I want to generate handouts in article style that include my beamer slides (mostly diagrams) and explanations.

For that I am now considering to use beamerarticle. I want to frame the slides using mdframed, and setting the proper beamer templates. Problems occur when using frametitles to frames using brackets as usual (second option below). I get an extra } or forgotten \endgroup error at the \end{frame}.

\documentclass[a4paper,12pt]{article}
\usepackage{beamerarticle}
%\documentclass[ignorenonframetext]{beamer}
\usepackage{tikz}
\usepackage{mdframed}

\mode<article>{
\setbeamertemplate{frame begin}{\begin{mdframed}}
\setbeamertemplate{frame end}{\end{mdframed}}
}

\begin{document}
No problem: using \verb+\frametitle+
\begin{frame}
    \frametitle{binary search tree}
        \tikz   \draw[dashed,thick] (0,0) rectangle (8,0.5) ;
\end{frame}

Error: frametitle as argument to \verb+\frame+
\begin{frame}{extended tree}
        \tikz   \draw[dashed,thick] (0,0) rectangle (8,0.5) ;
\end{frame}
\end{document}

Thanks.

Using \frametitle is the cleaner way. I always use \frametitle since even in plain beamer documents the other syntax can cause trouble. — , Feb 23 '20 at 15:13
@Schrödinger'scat Thanks. After bringing my problems back to a minimal example I still did not know what to blame. — Hendrik Jan, Feb 24 '20 at 10:35

score 1 · Accepted Answer · answered Sep 24 '22 at 19:19

I strongly suggest not to use this confounded \begin{frame}{<frametitle>} syntax. This is only around for backwards compatibility. Instead you should use the proper \frametitle{...} syntax. It is much more flexible.

If you really must use such an annoying syntax, you could work around your problem like this:

\documentclass[a4paper,12pt]{article}
\usepackage{beamerarticle}
%\documentclass[ignorenonframetext]{beamer}
\usepackage{mdframed}
\mode<article>{
\AfterEndEnvironment{frame}{\end{mdframed}}
\BeforeBeginEnvironment{frame}{\begin{mdframed}\vspace*{-\baselineskip}}
}
\begin{document}
\begin{frame}
    \frametitle{binary search tree}
    test
\end{frame}
\begin{frame}{extended tree}
     test
\end{frame}
\end{document}

Thanks. Indeed, I stopped using the "annoying syntax". – Hendrik Jan Sep 25 '22 at 15:59 — Hendrik Jan, Sep 25 '22 at 15:59

Framing \frame using mdframed with beamerarticle

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