Determining physical display dimensions

Folks:

(Basically a non-R question).

Is there any (simple) OS independent way for (the latest version of) R to
determine the physical dimensions in pixels of the current display device?

Failing that, (how) can this be done for Windows (XP or 2000, say) ?

Thanks.

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
 
"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box