🚀 go-pugleaf

Hi,

The C++ static data in DLLs does not work properly as stated in Borland C++
Programmer's Guid, page 336:

	Through a DLL's functions, all applications using the DLL
	have access to that DLL's global data.  A particular function
	will use the same data, regardless of the application that
	called it. If you want a DLL's global data to be protected for
	use by a single	application, you would need to write that
	protection yourself.

	The DLL itself does not have a mechanism for making global data
	available to a single application.  If you need data to be private
	for a given caller of DLL, you will need to dynamically allocate
	the data and manage the access to that data manually.  Static data
	is global to all callers of a DLL.

If I'm going to "write that protection myself" everytime I need to 
use static data members in a class, then the C++ programming for DLL
is severe handicapped.

Since our UI is built with Visual Basic (v2.0) which only works with DLLs,
and was ported from SUN UNIX/C++ (a lot of static data), we have no choice
but to "write that protection ourselves".  My guestion is what is most
effective way of re-implementing many static data members into something
acceptable in DLL.

Someone out there in the netland should have delt with this problem already.
So, If you're the someone, would you please email me any info that might
help? 

Thanks,

Hungtau Ting
Software Engneer
XAIT

ting@xait.xerox.com