Using the ntheorem package, the definition of \newshadedtheorem overwrites the \theoremprework, which I wanted to use to redefine \emph inside a custom shaded theorem. The definition of \newshadedtheorem is:
\def\newshadedtheorem#1{% \expandafter\global\expandafter\xdef\csname#1@shadecolor\endcsname{% \the\shadecolor}% \ifx\theoremframecommand\relax \expandafter\global\expandafter\xdef\csname#1@framecommand\endcsname{% \noexpand\psframebox[fillstyle=solid, fillcolor=\csname#1@shadecolor\endcsname, linecolor=\csname#1@shadecolor\endcsname]}% \else \expandafter\global\expandafter\let\csname#1@framecommand\endcsname% \theoremframecommand% \fi \theoremprework{% \def\FrameCommand{\csname#1@framecommand\endcsname}% \vskip\theoremframepreskipamount\framed}% \theorempostwork{\endframed\vskip\theoremframepostskipamount}% \newtheorem@i{#1}% } Minimal example of what I want to do:
\documentclass[a4paper]{scrartcl} \usepackage{amsmath} \usepackage{xcolor} \usepackage{framed} \usepackage[amsmath,hyperref,noconfig,framed]{ntheorem} \usepackage{hyperref} % bakup old emph \let\oldEmph=\emph \theoremstyle{plain} \theorembodyfont{\upshape} \theoremprework{\renewcommand{\emph}[1]{\oldEmph{{\color{blue}##1}}}} \theorempostwork{\renewcommand{\emph}[1]{\oldEmph{##1}}} \def\theoremframecommand{\colorbox{blue!10}} \newshadedtheorem{definition}{\color{blue}Definition}[section] \begin{document} \begin{definition} Test of \emph{emph} inside Definiton. \end{definition} \end{document} Does anybody know how to achieve this?
