%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 11-4-24 on page 778.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

% Show page(s) 2

\documentclass{ttctbeamer}
% graphic converted to gray in book

\StartShownPreambleCommands
\documentclass{beamer}
\usetheme{Malmoe}
\useoutertheme{sidebar}
\usecolortheme{dove}
\StopShownPreambleCommands

\begin{document}
\begin{frame}
 \frametitle{A demonstration of a block environment.}
 \framesubtitle{The default and a modified layout.}
 \begin{block}<1->{Pythagoras Theorem}
   $c^2=a^2 + b^2$
 \end{block}
 \setbeamertemplate{blocks}[rounded][shadow=true]
 \setbeamercolor{block body}{bg=normal text.bg!90!black}
 \setbeamercolor{block title}{bg=normal text.bg!90!red}
 \setbeamerfont{block title}{size=\footnotesize,
                         parent={structure,block body}}
 \begin{block}<2->{Pythagoras Theorem}
   $c^2=a^2 + b^2$
 \end{block}
\end{frame}
\end{document}