# Re: [NTG-context] [NTG-Context] How to compute correct page number for handout

On 29-9-2010 1:13, Pierre-François Bonnefoi wrote:

Hello,

I'use extensively context to write my lecture notes and for all of my printing
needs.

For my students, I've made some lecture presentations in color, and I print them in
black&white, with four pages on one page for the handout.

I would like to compute a correct Table of contents according to the handout :
so to divide the current page number by four to get a correct page number for
the handout.

\def\ChapterPrefix#1{\the\numexpr#1/4 \relax}
\setupcombinedlist[content][level=1]
\setuplist[chapter][after=,before=,numbercolor=yellow,numbercommand=\underbar,pagecommand=\ChapterPrefix]

That doesn't work, and I've some difficulties to figure how computation is
performed in e-TeX...

Could you help me to resolve this issue ?

\starttext

\setupuserpagenumber[way=bychapter]

\dorecurse{3}{\chapter{test} \dorecurse{4}{test \page}}

\stoptext

-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________