T. Kurt Bond schrieb am 23.07.2021 um 17:55:
> With natural tables I can define a color, tell the table to have to
> use color backgrounds and turn the frame off and get every odd row in
> all my tables will have that color for the background.
>
> ========== Example ============================================================
> \definecolor[grayback][r=.8,g=.8,b=.8]
> \setupTABLE[background=color,frame=off]
> \setupTABLE[row][odd][backgroundcolor=grayback]
> ========== End of Example =====================================================
>
> Can I get this same effect with extreme tables?
>
> My first try with extreme tables looked like this:
>
> ========== Example ============================================================
> \definecolor[tablebackground][r=.8,g=.8,b=.8]
> \setupxtable[background=color,frame=off]
> \setupxtable[row][odd][backgroundcolor=tablebackground]
> ========== End of Example =====================================================
>
> That didn't seem to have any effect.
>
> Is there a way to have every odd row of every table in my document
> have color background?

\startuseMPgraphic{xtablerow}
     fill OverlayBox withcolor "gray";
\stopuseMPgraphic

\defineoverlay
   [xtablerow]
   [\ifodd\currentxtablerow
      \useMPgraphic{xtablerow}%
    \fi]

\starttext

\startxtable[frame=off,background=xtablerow]
\dorecurse{20}
   {\startxrow
      \startxcell Column 1 \stopxcell
      \startxcell Column 2 \stopxcell
    \stopxrow}
\stopxtable

\stoptext

Wolfgang
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