Am Mon, 25 May 2026 22:30:42 +0200 schrieb Jean-Pierre Delange via
ntg-context:
> Jim,
>
> I made a few controlled tests with a minimal ConTeXt example containing
> only radio fields.
>
> Results:
>
> * the PDF compiles correctly;
>
> * the radio widgets are present;
>
> * Acrobat displays them correctly;
I compiled that example with a current context in texlive 2026
(ConTeXt ver: 2026.04.27) on window 11 and the field doesn't work
for me. Adobe refuses to select a button, and in foxit all buttons
are selected together.
I looked into the PDF (after using \setupbackend[level=0])
and one can see that field is missing the values, only /Aaa is
mentioned, but no /Bbb and /Ccc:
3 0 obj
<< /FT /Btn /Ff 33603584 /Kids 2 0 R /T (choice) /V /Aaa >>
endobj
4 0 obj
<< /Type /Annot /BS << /S /I /W 1 >> /F 4 /H /N /Parent 3 0 R
/Subtype /Widget /Rect [ 97.44189 677.658381 108.408258 688.624749 ]
>>
endobj
5 0 obj
<< /Type /Annot /BS << /S /I /W 1 >> /F 4 /H /N /Parent 3 0 R
/Subtype /Widget /Rect [ 149.454104 677.658381 160.420472 688.624749
] >>
endobj
6 0 obj
<< /Type /Annot /BS << /S /I /W 1 >> /F 4 /H /N /Parent 3 0 R
/Subtype /Widget /Rect [ 198.957112 677.658381 209.92348 688.624749
] >>
endobj
There are also no appearances streams but this is only required in
PDF 2.0.
Wenn I do something similar with LaTeX then the field contains an
/Opt array:
<< /T (choice) /FT /Btn /Opt 5 0 R /V /0 /DV /0 /Kids 7 0 R /Ff
33587200 >>
This array references the values:
5 0 obj
[ (\376\377\000A\000a\000a) (\376\377\000B\000b\000b)
(\376\377\000C\000c\000c) ]
endobj
And the widgets reference the array values by index (we are using
appearance streams, so the setup is more complicated).
The radio field correctly prints for me.
\RequirePackage{pdfmanagement}
\SetKeys[document/metadata]{uncompress}
\documentclass{article}
\usepackage{l3pdffield}
\begin{document}
\ExplSyntaxOn
\pdffield_setup:n{preset-radiobutton={setannotflags=Print}} %make
field printable
\pdffield_radio:n
{
group = choice,
value = Aaa,
}\quad
\pdffield_radio:n
{
group = choice,
value = Bbb,
}\quad
\pdffield_radio:n
{
group = choice,
value = Ccc,
}
\ExplSyntaxOff
\end{document}
--
Ulrike Fischer
http://www.troubleshooting-tex.de/
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