How to enable circle symbol as slide transition symbol on the header of LatexBeamer

Does anyone knows how开发者_开发问答 to enable the circle symbol (slide transition) in the beamer theme Darmstadt such as http://www.maths.dundee.ac.uk/~dfg/icms09/beamer-handout.pdf

Thanks.

-jo

You could try setting the outer theme to berlin.

\useoutertheme{berlin}

This looks like the Darmstadt theme in combination with the seahorse colour theme. It's easy to see that this is not Berlin because the the corners of the blocks are round, the inner elements of the slides (enumeration symbols etc.) are also round and the shadow below the headline is also missing in Berlin.

\documentclass{beamer}

\usetheme{Darmstadt}
\usecolortheme{seahorse}

\title{text}

\begin{document}

\begin{frame}
\titlepage
\end{frame} 

\section{title}
\begin{frame}
    \begin{enumerate}
    \item test
    \end{enumerate}
\end{frame} 

\end{document}