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%%  Ein Beispiel der DANTE-Edition
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%%  2. Auflage
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%%  Beispiel 05-10-1 auf Seite 167.
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%%  Copyright (C) 2016 Herbert Voss
%% 
%%  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.
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%% ==== 
% Show page(s) 1
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\setlength\parindent{0pt}
\setlength\fboxsep{0pt}
%StartShownPreambleCommands
\usepackage{graphicx}
%StopShownPreambleCommands
\begin{document}
  X\_\fbox{\includegraphics[width=2cm]{B}}\_X
  X\_\fbox{\includegraphics[height=2cm]{B}}\_X
  X\_\fbox{\includegraphics[width=2cm,height=2cm,keepaspectratio=false]{B}}\_X
  X\_\fbox{\includegraphics[width=2cm,height=2cm,keepaspectratio]{B}}\_X
\end{document}