Hans van der Meer wrote:
> On Jun 30, 2006, at 19:05, Hans Hagen wrote:
>
>
>> Hans van der Meer wrote:
>>
>>> Just curious, because the last of the three examples solves the
>>> problem.
>>>
>>> Why is it that this is allowed in the parameter list of \framed:
>>>
>>> \framed[frame=on,\iftrue width=3cm\fi]{abc}
>>>
>> i would not use that kind of tricks, since it's pure luck if it works
>>
>>> But this gives an error:
>>> \framed[frame=on,\iftrue background=color,backgroundcolor=green\fi]
>>> {abc}
>>>
>> because a , is seen and it separates the if from the fi
>>
>>> ! Incomplete \if; all text was ignored after line 42.
>>> <inserted text>
>>> � � � � � � � � \fi
>>> <*> test.tex
>>> � � � � � �� emergencyend
>>> ?
>>>
>>> Allthough�this works and solves the problem I had:
>>> \framed[frame=on,background=\iftrue color\else
>>> none\fi,backgroundcolor=green]{abc}
>>>
>>> Is this somewhat inconsistent behaviour intrinsic to some
>>> parameters?�
>>> I thought all parameters are picked up by a macro and then stashed
>>> away.
>>>
>> indeed
>>
>> btw background=none will trigger an overlay called 'none', when
>> defined
>>
>> why do you need such tricks?
>>
>>
>
> I want to switch runtime between colors. The switching occurs inside
> the execution of a \halign template.
>
then just redefine the color
\definecolor[colorone][r=1]
\definecolor[colortwo][g=1]
\definecolor[mycolor][colorone]
....
\definecolor[mycolor][colortwo]
or, when you want to switch many colors, use color palets and switch palets
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
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