It is hard to have the minted environment itself as an argument to \censorbox, because it contains verbatim material. At the time where it is passed as an argument, the catcodes are fixed and the verbatimness is basically broken. There are workarounds for this, but I will take another approach, namely saving the output of the minted environment in a box and then using the box. The advantage is that a box always contains completely typeset material and thus doesn't have to deal with immutable catcodes.
Enclosing in a vbox
Inspired by this answer (Marco Daniel, 2013) I simply enclosed the minted environment in a vbox called \mintedbox. This vbox can then be used with \box\mintedbox, which also works inside of \censorbox.
\documentclass{article}
\usepackage{minted,etoolbox,censor}
\newbox\mintedbox
\BeforeBeginEnvironment{minted}{\setbox\mintedbox=\vbox\bgroup}%
\AfterEndEnvironment{minted}{\egroup}%
\begin{document}
\begin{listing}[H]
\begin{minted}{cpp}
#include <iostream>
// some CPP code ...
int main()
{
std::cout << "Hello World!" << std::cout;
return 0;
}
\end{minted}
\censorbox{\box\mintedbox}
\caption[Caption]{Listing Caption}
\label{lst:code}
\end{listing}
\end{document}
If you dislike this syntax, you can have this as an environment.
\newenvironment{censorenv}%
{\setbox0=\vbox\bgroup}%
{\egroup\censorbox{\box0}}
\begin{censorenv}
\begin{minted}{cpp}
// some CPP code ...
\end{minted}
\end{censorenv}
censored
uncensored
Hacking fancyvrb
This is a very hackish solution. I copied the definition of SaveVerbatim and modified it to always save to a box named minted. Then I redeclared Verbatim to call the modified mintedSaveVerbatim instead. Now, when you use \begin{minted}...\end{minted} the content is not printed but saved to a box called minted. You can then place this box using \BUseVerbatim{minted}. This one will then also work in \censorbox.
\documentclass{article}
\usepackage{minted,censor}
\makeatletter
\def\mintedSaveVerbatim{\FV@Environment{}{mintedSaveVerbatim}}
\def\FVB@mintedSaveVerbatim{%
\@bsphack
\begingroup
\FV@UseKeyValues
\def\SaveVerbatim@Name{minted}%
\gdef\FV@TheVerbatim{}%
\def\FV@ProcessLine##1{%
\expandafter\gdef\expandafter\FV@TheVerbatim\expandafter{%
\FV@TheVerbatim\FV@ProcessLine{##1}}}%
\gdef\FV@TheVerbatim{}%
\FV@Scan}
\def\FVE@mintedSaveVerbatim{%
\expandafter\global\expandafter\let
\csname FV@SV@\SaveVerbatim@Name\endcsname\FV@TheVerbatim
\endgroup\@esphack}
\RecustomVerbatimEnvironment{Verbatim}{mintedSaveVerbatim}{}
\begin{document}
\begin{listing}[H]
\begin{minted}{cpp}
#include <iostream>
// some CPP code ...
int main()
{
std::cout << "Hello World!" << std::cout;
return 0;
}
\end{minted}
\censorbox{\BUseVerbatim{minted}}
\caption[Caption]{Listing Caption}
\label{lst:code}
\end{listing}
\end{document}
censored
uncensored
censor, I doubt it will work withminted, but if I saw some code, I might be able to take a stab. Welcome to the site. – Steven B. Segletes Mar 31 '16 at 11:21mintedcode on my system (I lackpygmentize) We'll see if someone else can assist. – Steven B. Segletes Mar 31 '16 at 11:56multiaudiencepackage; for your "internal" audience you have the code, for the "internet" audience, you could have a box explaining why there's no code to show, rather than a black blob. – Brent.Longborough Mar 31 '16 at 15:53