[pstricks] beamer and pst-abspos

[ysx_zh at sina.com]

Hi there,

I want to use pst-abspos package to put something at an absolute position in a beamer. 
However, it seems that "absolute" option could not give the correct origin as 
the pst-abspos manual said. 

The following is the code I used.

\documentclass{beamer}
\usepackage[absolute]{pst-abspos}
\begin{document}
\begin{frame}
  \pstSetAbsoluteOrigin
  \pstPutAbs(0,0){\qdisk(0,0){4pt}\red Point(0,0)}
\end{frame}
\end{document}

As you will see, the red point is not at the upper left corner...

Any suggestions?

Regards,
Jinsong