[texhax] [pdftex] image XObjects in pdfTeX or XeTeX PDF output?

Peter Davis pfd at pfdstudio.com
Mon Nov 22 01:48:14 CET 2010


On Sun, Nov 21, 2010 at 3:43 PM, Martin Schröder <martin at oneiros.de> wrote:

> 2010/11/21 Peter Davis <pfd at pfdstudio.com>:
> > On Sun, Nov 21, 2010 at 10:36 AM, Martin Schröder <martin at oneiros.de>
> wrote:
> >> \pdfxform
> >
> > Thanks!  Anyone know if XeTeX has a facility like this?  I think I need
> the
> > font, language and UTF-8 support that XeTeX has.
>
> I believe so - pdftex, xetex and luatex are very compatible. Try for
> yourself. :-)
>


Well, XeTeX 3.1415926-2.2-0.9997.4 doesn't appear to recognize \pdfxform,
unless there's some package that defines this that I'm unaware of.  I just
tried this sample code I had found at
http://newsgroups.derkeiler.com/Archive/Comp/comp.text.tex/2010-04/msg00087.html

% minimal example:
% ----------------------------------------------------------

\documentclass[a4paper]{minimal}

\usepackage[latin1]{inputenc}

\usepackage[T1]{fontenc}

\begin{document}\makeatletter

First example:


\setbox\z@\hbox{Hello world !}

\begingroup

\pdfxform\z@\pdfrefxform\pdflastxform% globally voids \box\z@

\endgroup


\ifvoid\z@

The box is now void !

\else

\copy\z@

\fi


Second example:


\setbox\z@\hbox{Hello world !}

\begingroup

\setbox\z@\hbox{\copy\z@}

\pdfxform\z@\pdfrefxform\pdflastxform% locally voids \box\z@

\endgroup


\ifvoid\z@

The box is now void !

\else

\copy\z@

\fi


\end{document}\endinput


The XeTeX doc I have xetexmain.pdf doesn't mention this either.

Thanks,
-pd
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