[Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>]

wsgd wrote:
> Hello all,
>
> I want to display in red (or ...) a line where there is an error, a bad 
> value.
> E.g. : a value for which there is  no string associated into the 
> value_string array.
>
> Is there a way to do it ?

Try the Expert Info APIs:

http://wiki.wireshark.org/Development/ExpertInfo