Path: utzoo!attcan!uunet!aplcen!uakari.primate.wisc.edu!zaphod.mps.ohio-state.edu!think!snorkelwacker!mit-eddie!bu-cs!polygen!bill
From: bill@polygen.uucp (Bill Poitras)
Newsgroups: comp.windows.ms
Subject: Data Segments for DLL's
Message-ID: <606@fred.UUCP>
Date: 11 Dec 89 15:17:46 GMT
Reply-To: bill@fred.UUCP (Bill Poitras)
Organization: Polygen Corporation, Waltham, MA
Lines: 26

Is it true that a DLL can have a heap (like for linked lists etc.)?

If so, does a DLL create a data segment for each instance of each program
that calls the library?

My ultimate goal is to implement a group of DLL's that will allow me to
write several display list oriented graphics applications, and I don't want
to have to implement a multisegment display/object list.  The way want it is 
the following:
		Display List manager - worries about lines, rectangles, ellipses
		Object manager - worries about the non-graphical information about
						 certain objects: data base blocks, complex symbols
						 spreadsheet cells, etc.
		Message manager - accepts messages and knows  which module to
						 dispatch them to.

The last DLL will be necessary to implement a platform independant system. 
The other platforms will be Mac and Motif/X11.

Any help will be greatly appeciated. 


+-----------------+---------------------------+-----------------------------+
| Bill Poitras    | Polygen Corporation       | {princeton mit-eddie        |
|     (bill)      | Waltham, MA USA           |  bu sunne}!polygen!bill     |
+-----------------+---------------------------+-----------------------------+