Am 18.10.2010 um 14:18 schrieb Otared Kavian:
> Your solution works as intended when the framed, highlighted text with
> background spans over two pages (though it doesn't when it spans over three
> pages or more, but this is not a real issue, since it is a bad idea to have
> such long highlighted texts…).
I guess this is also possible with textbackground:
\newcounter\CurrentBackground
\def\StartBackground
{\doglobal\increment\CurrentBackground
\setposition{Background:b:\CurrentBackground}%
\startbackground}
\def\StopBackground
{\stopbackground
\setposition{Background:e:\CurrentBackground}}
\def\DrawBackground
{\ifnum\MPp{Background:b:\CurrentBackground}=\MPp{Background:e:\CurrentBackground}
\startMPcode
draw topboundary OverlayBox withcolor red ;
draw bottomboundary OverlayBox withcolor red ;
draw leftboundary OverlayBox withcolor red ;
draw rightboundary OverlayBox withcolor red ;
\stopMPcode
\else\ifnum\realpageno=\MPp{Background:b:\CurrentBackground}
\startMPcode
draw topboundary OverlayBox withcolor red ;
draw leftboundary OverlayBox withcolor red ;
draw rightboundary OverlayBox withcolor red ;
\stopMPcode
\else\ifnum\realpageno=\MPp{Background:e:\CurrentBackground}
\startMPcode
draw bottomboundary OverlayBox withcolor red ;
draw leftboundary OverlayBox withcolor red ;
draw rightboundary OverlayBox withcolor red ;
\stopMPcode
\else
\startMPcode
draw leftboundary OverlayBox withcolor red ;
draw rightboundary OverlayBox withcolor red ;
\stopMPcode
\fi\fi\fi}
\defineoverlay[DrawBackground][\DrawBackground]
\starttext
\setupbackground[background=DrawBackground]
\input knuth
\StartBackground
\dorecurse{12}{\input knuth\par}
\StopBackground
\input knuth
\StartBackground
\input knuth\par
\StopBackground
\input knuth
\stoptext
Wolfgang
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