[pstricks] Retrieving coordinates

[Arnout Standaert]

Hi all,

I'm using pstricks to produce A0 posters. Essentially, I put
textboxes inside a \psshadowbox command and shove these around to get the
desired layout (I borrowed some code from the textpos package to allow
absolute positioning of these boxes on the page).
Now, is there a way of retrieving the coordinates of the lower right corner
of such a \psshadowbox? This would allow my package to calculate the optimal
position of new boxes, relative to the already present ones, and save me a
lot of time shoving the boxes around in a trial-and-error way...

Thanks in advance for any suggestions,
Wald