Am 13.06.2011 um 14:30 schrieb luigi scarso:

>> How can I do the same thing in ConTeXt?
> plain TeX is ok, for example,
> \newdimen\AlphaBet
> \bgroup \setbox10=\hbox{abcdefghijklmnopqrstuvwxyz}
> \global\AlphaBet=\wd10\egroup
> \the\AlphaBet

\starttext

\dowithnextbox
  {\edef\AlphabetLength{\the\nextboxwd}}%
   \hbox{abcdefghijklmnopqrstuvwxyz}

\AlphabetLength

\stoptext

Hans wrote also a command for this but it never went into core: http://archive.contextgarden.net/message/20070314.120612.adab0a8b.en.html

Wolfgang