From:	"Harold" <harold AT signalogic DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	memory sharing problem on WinNT
Date:	Fri, 25 Sep 1998 10:43:42 -0500
Organization:	Flashnet Communications, http://www.flash.net
Lines:	27
Message-ID:	<6ugpo2$st5$2@excalibur.flash.net>
NNTP-Posting-Host:	p236.amax5.dialup.dfw1.flash.net
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Dear all:

I have a DOS program in WinNT. The Buffer inside this DOS program need to be
shared
by Win16 or Win32 program. I use VDD(virtual device driver, documented in
DDK) to pass the pointer of this Buffer to a Win32 DLL. So inside this Win32
DLL I can access the
DOS buffer by using this pointer. But my Win16/or Win32 user program also
need to
share this buffer. Is there a way to do this? Or basically it's impossible.
I know WinNt make
it very hard.

I try many ways, for example, File mapping. But file mapping can't let you
share memory
starting fom specific virtual address. You can only allocate a memory, and
share it.

I also try the Kernel mode driver, by using MDL(memory descrptor list). It
also doesn't work?

Any suggestions will be greatly appreciated.

Harold

- Raw text -