Re: backgrounds: help needed

[Wolfgang Schuster <schuster.wolfgang@googlemail.com>]

Am 20.01.2009 um 23:51 schrieb Alan BRASLAU:

> I, too, do not understand the
> \definetextbackground
> \starttextbackground
> \stoptextbackground
> commands, even though I tried looking at "details.pdf" (and core- 
> pgr.tex).
> My particular problem is rather classic, that of illustrating  
> examples, set off from the main text.
> I first used
> \defineframedtext [example]
> [width=fit,background=screen,backgroundscreen=0.7]
> \startexample
> ...
> \stopexample
> and this is appropriate if the example is short enough to fit on one  
> page.
> However, a long example (many paragraphs) that spans more than one  
> page
> runs off the bottom.
> Textbackground seems more appropriate, so I tried
> \definetextbackground [example]
> [location=paragraph,backgroundcolor=middlegray,frame=off]
> \definestartstop [example]
> [before={\starttextbackground[example]},after=\stoptextbackground]
> but this does not work. I tried other variants (such as adding  
> state=start, ...) with no success.
> Does anyone have suggestions on where to look for further  
> documentation or examples of use?


This works for me.

\setupcolors[state=start]

\definetextbackground
   [example]
   [location=paragraph,
    background=color,
    backgroundcolor=middlegray,
    frame=off]

\starttext

\input knuth

\startexample
\dorecurse{4}{\input knuth\par}
\stopexample

\input knuth

\stoptext

Wolfgang

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