Hi,

For my book, the header for each chapter should be like the attached image. I don't know if I am using the best method, but the result looks like what I want. Nevertheless, I am having some problems :

1. the header appears on each page ;

2. the title of the chapter should not appear in the body of the text.

Thanks for your help.

Fabrice

\definecolor[MyColorA][r=0.8784, g=0.8784, b=0.8784]
\defineframedtext
[FramedText]
[
offset=0.6em,
style=,
toffset=\lineheight,
background=color,
backgroundcolor=MyColorA,
foregroundstyle={\switchtobodyfont[11pt]},
align={left, broad},
frame=off,
width=\textwidth,
]

\setuplabeltext
[en]
[chapter=CHAPITRE]

\setuphead
[chapter]
[bodypartlabel=]

\startsetups [header]
\labeltext{chapter} \getmarking[chapternumber]
\stopsetups

\setupheadertexts
[]
[{\FramedText{{\cap\labeltext{chapter}\space\getmarking[chapternumber]}
\\
\bfc\getmarking[chapter]}}]
[]
[\FramedText{{\cap\labeltext{chapter}\space \getmarking[chapternumber]}
\\
\bfc\getmarking[chapter]}]

\setuppagenumbering
[alternative=doublesided,location=]
\starttext
\startchapter [title=La récurrence]
\startsection[title={Le principe de récurrence}]
\dorecurse{10}{\input knuth}
\stopsection
\startsection[title={Le raisonement par récurrence}]
\dorecurse{10}{\input knuth}
\stopsection
\startsection[title={Récurrences fortes}]
\dorecurse{10}{\input knuth}
\stopsection
\startsection[title={Exercices corrigés}]
\dorecurse{10}{\input knuth}
\stopsection
\stopchapter
\startchapter [title=Combinatoire-Dénombrement]
\dorecurse{10}{\input knuth}
\stopchapter

\stoptext