[pdftex] Handwritten pdf graphics

[Hartmut Henkel]

Dear pdfTeX fans,

I am trying handwritten pdf graphics with pdfTeX, without success so
far: I started with what pdfTeX does with a simple \vrule (pdfTeX
creates object 1). This PDF stream I duplicated by hand, see the code
below (pdfTeX creates object 2). Both objects are similar, and can be
used alternatively by hacking the .pdf file.

The problem is, that object 2 is never used, but an object 3 with empty
stream instead. It looks that the line

\setbox1=\hbox{\pdfrefobj\objb}

does not the desired thing. The objects are referenced like this:

/Fm1 --> 1 0 R --> object with \vrule
/Fm2 --> 3 0 R --> object with empty stream

What am I doing wrong? Also I could not find an example about writing
pdf; do you know of a good place to look? Thanks a lot for your help!

Best Regards

Hartmut


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The pdfTeX code:

\pdfcompresslevel=0
\nopagenumbers
\parindent=0pt
\newcount\obja \newcount\objb
\newcount\xobja \newcount\xobjb

\setbox0=\hbox{\vrule height 3bp depth 0pt width 217bp}
\pdfxform 0
\xobja=\pdflastxform

\pdfobj stream
attr {
/Type /XObject
/Subtype /Form
/Matrix [1 0 0 1 0 0]
/FormType 1
/Resources 12 0 R
/BBox [0 0 216 3]
}
{
q
[]0 d
0 J
0 j
0 w
0 0 216 3 re f
S
Q}
\objb=\pdflastobj
\setbox1=\hbox{\pdfrefobj\objb}
\pdfxform 1
\xobjb=\pdflastxform

xobja: \pdfrefxform \xobja \par
xobjb: \pdfrefxform \xobjb

\end


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Dr.-Ing. Hartmut Henkel, Oftersheim, Germany
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