Following Outlined characters, you can make selectable outlined text using the contour
package. For example, the following writes "Text text text contour text", with "contour" in green with a red outline. It compiles and displays as expected (using pdflatex
and lualatex
):
\documentclass[12pt]{article}
\usepackage[outline]{contour}
\begin{document}
Text text text \contour{red}{\textcolor{green}{contour}} text.
\end{document}
However, when I try to do the same in a Beamer presentation—
\documentclass{beamer}
\usepackage[outline]{contour}
\begin{document}
\begin{frame}{Example}
Text text text \contour{red}{\textcolor{green}{contour}} text.
\end{frame}
\end{document}
—it fails to compile, with the error
! Use of \\@contour doesn't match its definition.
\beamer@ifnextcharospec #1#2->\def \reserved@a {
#1}\def \reserved@b {#2}\fut...
l.14 \end{frame}
?
How can I use the outline effect in a Beamer presentation?
Best Answer
Prolog
Apparently,
beamer
redefines\textcolor
in a way that makes it fragile.If you
\usepackage{beamerarticle}
in yourarticle
MWE, you experience the same problems as withbeamer
.Long answer
What is the difference between Fragile and Robust commands?
Short answer
Use
\contour{<color>}{\protect\textcolor{<color>}{<text>}}
or\textcolor{<color>}{\contour{<color>}{<text>}}
.Code
Output