How to insert an image on line to all \section and \subsection?

Question

I have to insert an image a begin of every \section and \subsection using those LaTeX commands.

I have tried this:

\renewcommand{\@seccntformat}[1]{\mbox{\includegraphics{FigureFISSE/IconaT1.eps}\quad\mbox{\csname the#1\endcsname}\hspace{0.5em}}}

but typsetting the following error appears:

32: Argument of \@sect has an extra }.
<inserted text> 
                \par 
<to be read again> 
                   }
\@sect ...tected@edef \@svsec {\@seccntformat {#1}
                                                  \relax }\fi \@tempskipa #5...
l.32 ...ùòlkz xùl<k xùòlk<zxùlòk <ùòzlxk <ùòlxzk }

\documentclass{book}
\makeatletter
\renewcommand{\@seccntformat}[1]{\mbox{\includegraphics{FigureFISSE/IconaT1.eps}\quad\mbox{\csname the#1\endcsname}\hspace{0.5em}}}
\makeatother


\begin{document}

\chapter{Prova titolo}



Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo 
\section{Titolo sezione lòk xùl<kùxzlk òs àòsk fòskf àksò fdjks<ùòlxk ù<òlxk <ùòlkz xùl<k xùòlk<zxùlòk <ùòzlxk <ùòlxzk }
Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo 

\subsection{Titolo 2}
Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo 
Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo 

\end{document}

\documentclass{book} \makeatletter \renewcommand{@seccntformat}[1]{\mbox{\includegraphics{FigureFISSE/IconaT1.eps}\quad\mbox{\csname the#1\endcsname}\hspace{0.5em}}} \makeatother
\begin{document}

\chapter{Prova titolo}

Testo testo TTesto testo Testo testo \section{Titolo sezione lòk xùl<kùxzlk òs àòsk fòskf àksò fdjks<ùòlxk ù<òlxk <ùòlkz xùl<k xùòlk<zxùlòk <ùòzlxk <ùòlxzk } Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo

\subsection{Titolo 2} Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo

\end{document} — Bruno Guizzon, Mar 06 '17 at 18:02
Don't add examples as comments. Edit your question. And use a graphic that is not local, e.g. one from the mwe package. — Ulrike Fischer, Mar 06 '17 at 18:03
I have added an image of one page showing what I need. Sorry, but I don't know how to attach the LaTex document — Bruno Guizzon, Mar 06 '17 at 18:34
Your document doesn't load the graphicx package. Beside this: try \protect\includegraphics. — Ulrike Fischer, Mar 06 '17 at 18:37

score 1 · Answer 1 · answered Mar 08 '17 at 11:31

welcome to LaTeX.sx.

I think that you need the package named titlesec, it lets you customize any heading, in this example I changed a section style.

\documentclass[a4paper]{article}
\usepackage{titlesec,graphicx}

\titleformat{\section}
{\LARGE\bfseries}
{\includegraphics{FigureFISSE/IconaT1.eps}\quad \thesection}{1em}{}
\titleformat{\subsection}
{\Large\bfseries}
{\includegraphics{FigureFISSE/IconaT1.eps}\quad \thesubsection}{1em}{}

\begin{document}

\section{Introduction}

Some nice text.

\end{document}

You can find this in the manual page of the titlesec package, section 9.1 and 9.2. Just google it and you will find, or search on CTAN. I hope this helps.

Nice answer, but perhaps you should recast it in a form that is more readily compileable and presents all the changes, such as `\documentclass[a4paper]{article} \usepackage{titlesec,graphicx} \titleformat{\section} {\LARGE\bfseries} {\includegraphics[width=1cm]{example-image-A}\quad \thesection}{1em}{} \titleformat{\subsection} {\Large\bfseries} {\includegraphics[width=1cm]{example-image}\quad \thesubsection}{1em}{} \begin{document} \section{Introduction} Some nice text.
\subsection{Introduction} Some nice text. \end{document}` — Steven B. Segletes, Apr 07 '17 at 12:40

score 1 · Answer 2 · answered Apr 07 '17 at 13:22

You're just forgetting \protect:

\documentclass{book}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}

\makeatletter
\renewcommand{\@seccntformat}[1]{%
  \protect\includegraphics[height=1.5ex]{example-image}\quad
  \csname the#1\endcsname\enspace
}
\makeatother


\begin{document}

\chapter{Prova titolo}

Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo

\section{Titolo sezione abbastanza lungo per andare a capo, potrebbe bastare}

Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo

\subsection{Titolo 2}
Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo
Testo testo Testo testo Testo testo Testo testo Testo testo Testo testo

\end{document}

How to insert an image on line to all \section and \subsection?

2 Answers2