Captions in der Randspalte

\documentclass[fontsize=11pt, paper=a4, DIV=classic]{scrbook}
 
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
 
\usepackage{lmodern}
\usepackage{microtype}
\usepackage[ngerman]{babel}
 
\KOMAoption{headinclude}{false}
\KOMAoption{footinclude}{false}
\KOMAoption{mpinclude}{true}
\recalctypearea
 
\setlength{\marginparsep}{2em}
\setlength{\marginparwidth}{10em}
 
\usepackage{scrhack}
\usepackage[draft]{graphicx}
\usepackage{booktabs}
\usepackage{listings}
\usepackage{ragged2e}
\usepackage{xcolor}
\usepackage[top]{mcaption}
\usepackage{blindtext}
 
\DeclareNewTOC[%
  type=listing, types=listings, float, floatpos=htbp,%
  name=Quelltext, listname={Verzeichnis der Quelltexte},%
  counterwithin=chapter]{lst}
\setuptoc{lst}{chapteratlist}
 
\newcommand{\RaggedOuter}{\RaggedRight}
 
\newcommand{\checkOddPage}{\ifthispageodd%
  {\renewcommand\RaggedOuter{\RaggedRight}\lstset{numbers=left}}%
  {\renewcommand\RaggedOuter{\RaggedLeft}\lstset{numbers=right}}}
 
\makeatletter
 
% Figures with margin caption
\let\orig@figure\figure
\let\orig@endfigure\endfigure
\renewenvironment{figure}[1][htbp]%
  {\orig@figure[#1]\checkOddPage\margincap\centering\small}%
  {\endmargincap\orig@endfigure}
 
% Tables with margin caption
\let\orig@table\table
\let\orig@endtable\endtable
\renewenvironment{table}[1][htbp]%
  {\orig@table[#1]\checkOddPage\margincap\centering\small}%
  {\endmargincap\orig@endtable}
 
% Listings with margin caption
\let\orig@listing\listing
\let\orig@endlisting\endlisting
\renewenvironment{listing}[1][htbp]%
  {\orig@listing[#1]\checkOddPage\margincap}%
  {\endmargincap\orig@endlisting}
 
\makeatother
 
% Caption format
\addtokomafont{caption}{\RaggedOuter\small}
\setkomafont{captionlabel}{\sffamily\bfseries}
\setcapindent*{0pt}
\renewcommand{\captionformat}{}
 
% Listings
\lstset{language=Java}
\lstset{tabsize=2}
\lstset{basicstyle={\ttfamily\small}}
\lstset{keywordstyle={\bfseries}}
\lstset{commentstyle={\itshape\color{darkgray}}}
\lstset{columns=fullflexible, basewidth={0.55em, 0.55em}}
\lstset{frame=single, framerule=0pt, backgroundcolor={\color{black!5}}}
\lstset{numberstyle=\sffamily\tiny}
\lstset{literate={Ö}{{\"O}}1{Ä}{{\"A}}1{Ü}{{\"U}}1{ß}{{\ss}}2{ü}{{\"u}}1{ä}{{\"a}}1{ö}{{\"o}}1}
 
 
\begin{document}
 
\chapter{Captions in der Randspalte}
 
\blindtext
 
\begin{listing}[h]
\caption{Bedingte Wiederholung mit Prüfung der Bedingung am Anfang}
\begin{lstlisting}
int a = 1;
int b = 1;
 
while (a < 1000)
{
  System.out.print(a + "; ");
 
  b = a + b;
  a = b - a;
}
 
System.out.println("...");
\end{lstlisting}
\end{listing}
 
\blindtext
 
\begin{figure}
\caption{Programmablaufplan für die bedingte Wiederholung mit Prüfung am Anfang}
\includegraphics[width=\linewidth]{FuBK-Testbild}
\end{figure}
 
\blindtext
 
\begin{table}
\caption{Überblick über die Kontrollstrukturen}
\begin{tabular}{lll}
\toprule
Test & Test & Test \\
\midrule
Wer & das & liest \\
ist & selbst & schuld \\
\bottomrule
\end{tabular}
\end{table}
 
\blindtext
 
\end{document}