How to assign \MPstring before creating page?

26 Apr 2007

      Hi, everybody

I want to use my titles as water marks. I've tried this small test file:
=================================

\setupcolors[state=start]
\setuppagenumbering[location=]

\setMPtext{titleentry}{xxx}

\setuphead
  [title]
  [textcommand=\TITLE,
   page=right,
   before=,
   after=\blank,
   inbetween=,
   header=,
   textstyle=,
   style=]

\def\TITLE#1%
  {#1\setMPtext{titleentry}{#1}}

\setupbackgrounds
   [page]
   [background=page]

\defineoverlay[page] [\useMPgraphic{page}]

\startuseMPgraphic{page}
  StartPage;
    save r;
    picture r;
    r := textext.rt(\MPstring{titleentry});
    r := r shifted (.5Hsize[Text],.5Vsize[Text]);
    draw r withcolor darkred;
  StopPage;
\stopuseMPgraphic

\starttext

\title{Some Title}

Some texts.

\page[yes]

Some texts.

\stoptext
=================================
It seems it did not get the correct parameter. So I guess the \setMPtext
inside \TITLE was not executed when the page was created. I also want to get
chapter titles as water marks as well. What can I do?

Thank you.

-- 
Best Regards
Chen
----------------------------------------------------------------

          Zhi-chu Chen | Shanghai Synchrotron Radiation Facility
         No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China
             tel: 086 21 5955 3405 | zhichu.chen.googlepages.com
                                               | www.sinap.ac.cn
----------------------------------------------------------------

Zhichu Chen

Zhichu Chen

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