I also just saw that columnized itemization doesn't work with "columns" key. Use "horizontal" instead:

\definemixedcolumns
  [Mycolumns]
  [
    n=2,
    separator=rule,
    rulecolor=,
    balance=,
    grid=strut,
  ]

\setupalign[verytolerant,stretch,hanging]

\setuppapersize[A4,landscape]
\setupinteractionscreen[option=landscape]

\starttext
  \startMycolumns

    \startitemize[packed, columns, three]
      \startitem
        one
      \stopitem
      \startitem
        two
      \stopitem
    \stopitemize
    \blank[medium]
    \startitemize[packed, horizontal, three]
      \startitem
        three
      \stopitem
      \startitem
        four
      \stopitem
    \stopitemize

  \stopMycolumns
\stoptext

Cheers

-------- Weitergeleitete Nachricht --------

Betreff:	Re: [NTG-context] Multicolumn enumeration in a column
Datum:	Sat, 30 Dec 2017 20:49:06 +0100
Von:	Lars <axteffekt@gmail.com>
An:	ntg-context@ntg.nl

Hey there,

the code that you're using won't work with \item command.
Use the \startitem ... \stopitem command pair instead.

Another way to get itemizations in columns is to simply place one itemizeation per column:

\starttext

  two columns:

  \startcolumns[n=2]
 
    \startitemize[packed]
      \startitem
        one
      \stopitem
      \startitem
        two
      \stopitem
    \stopitemize
   
    \column
   
    \startitemize[packed]
      \startitem
        one
      \stopitem
      \startitem
        two
      \stopitem
    \stopitemize
   
  \stopcolumns
 
  \blank[big]
 
  three columns:
 
  \startcolumns[n=3]
   
    \startitemize[packed]
      \startitem
        one
      \stopitem
      \startitem
        two
      \stopitem
    \stopitemize
   
    \column
   
    \startitemize[packed]
      \startitem
        one
      \stopitem
      \startitem
        two
      \stopitem
    \stopitemize
   
    \column
   
    \startitemize[packed]
      \startitem
        one
      \stopitem
      \startitem
        two
      \stopitem
    \stopitemize
   
  \stopcolumns
 
\stoptext

Cheers

Am 30/12/2017 um 10:18 schrieb Fabrice Couvreur:

Hello,
How to modify the code for an enumeration on three columns in a column ?
Thank you
Fabrice


\definemixedcolumns
  [Mycolumns]
  [
    n=2,
    separator=rule,
    rulecolor=,
    balance=,
    grid=strut,
  ]

\setupalign[verytolerant,stretch,hanging]

\setuppapersize[A4,landscape]
\setupinteractionscreen[option=landscape]

\starttext
\startMycolumns
\startitemize[n]
  \item
  \item
\blank   
\startitemize[a,columns,three,joinedup]  
\item
\item
\item
\stopitemize
\stopitemize
\stopMycolumns
\stoptext

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________