Date: Thu, 20 Nov 1997 19:21:22 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: andrewc AT rosemail DOT rose DOT hp DOT com
cc: djgpp-workers AT delorie DOT com
Subject: Re: LFN on NT
In-Reply-To: <199711201702.AA165755340@typhoon.rose.hp.com>
Message-ID: <Pine.SUN.3.91.971120191752.13311A-100000@is>
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On Thu, 20 Nov 1997, Andrew Crabtree wrote:

> hardware interrupts.  I think the problem is that the Virtual Dos Manager
> already hooks int 21, and am not sure how a user supplied driver would 
> be able to chain into it.

Your DLL will have to use a software interrupt anyway, right?  Or are you 
thinking about another way of calling it?

If it will be a software interrupt, then which one is easier to hook than 
21h?  I'm afraid all of the rest (2Fh, for example) that could be used 
for this goal are also hooked, probably by the same Virtual DOS Manager, 
because many DOS programs use functions of 2Fh.