[pstricks] Problem with pst-tree and beamer

[Herbert Voss]

Alan Ristow schrieb:

> When I run the minimal example below I get the following error:
> 
> ! Illegal parameter number in definition of \test.
> <to be read again>
>                     1
> l.10 \end{frame}
> 
> The PSTricks part of the code is copied straight from pst-user.pdf and 
> works fine outside of the frame environment -- it is only when I place 
> it between \begin{frame} and \end{frame} that the error comes up.
> 
> Any ideas?


\documentclass{beamer}
\usepackage{pst-tree}

\begin{document}

\def\psedge#1#2{\ncangle{#2}{#1}}
\begin{frame}
    \psset{armB=1cm, levelsep=3cm, treesep=1cm,
      angleB=-90, angleA=90, arrows=<-, nodesepA=3pt}
     \pstree[radius=2pt]{\Ttri{root}}{\TC* \TC* \TC* \TC*}
\end{frame}
\end{document}


works

Herbert