>>I'm not sure I understand the question.  Are you trying to generate a
"region" data structure which covers the same rectangle as a given PICT?<<

Sorry, no, _that_ I know how to do & have been doing all along (I don't bother
with regions, just hold on to right & bottom and use them for responding to
clicks on visible objects in games). But what I've been _wanting_ to do all
along, and never figured out, is the _exact region_ covered by the non-white
areas of the PICT.