Re: [MiKTeX] Colorboxes

[Proginoskes <pro...@em...>]

"Jesper Thomsen" wrote:
>
> I have tried typing:
> 
> \fcolorbox{lightgray}{lightblue}{%
> \parbox{\linewidth minus \fboxsep}{Text}%
> }
> 
> but I get an error message (! Missing number, treated as zero.)

Not what I would have expected ... When you use minus in TeX, you are 
actually asking TeX to use "glue" -- stretchable space. If you say, for 
instance, \hskip 1in minus 0.25in, this gives you a space, which can be 
anywhere from 0.75in to 1in wide, how wide depending on the text on the 
rest of that line, because TeX will stretch/shrink the spaces between 
words to make the right sides come out at the same width.
    In other words, minus will not automatically subtract the 0.25in from 
1in.

> How can I get the boxes in the desired width?

You need a new dimension register, which is \linewidth minus \fboxsep:

    \newdimen\modifiedwidth
    \modifiedwidth=\linewidth
    \advance \modifiedwith by -\fboxsep

Then use 

    \parbox{\modifiedwidth}{Text}%

    -- Christopher Heckman