To: DJGPP List <djgpp AT sun DOT soe DOT clarkson DOT edu>
Subject: Re: Mouse under DPMI ? 
Reply-To: pgf AT Cayman DOT COM
Date: Mon, 28 Feb 94 10:20:39 EST
From: Paul Fox <pgf AT Cayman DOT COM>

 > >   How can I use mouse under DPMI ? I know that edx must be set to 0x12345678
 > > and pass real mode call back function to Event installer. But my computer
 > > hangs when I move mouse.
 > 
 > I have a very early version of the 32 bit event code that Csaba and I put
 > together when putting V1.11 together.  It's a bit rough around the edges,
 > and doesn't allow you to access the event queue directly, but it does
 > work under most DPMI providers (a few are buggy and don't work, most
 > notably OS/2 2.0 (2.1 is fine) and NT).

uh oh.  i'm about to ask a newbie question.  :-)

i've just been trying to use the mouse under go32/dpmi, and it wasn't working.
these two messages imply that i'm probably going to have do a lot more to make
it work than i thought.  i was using the "allocate_retf_wrapper" thingamajig
to encapsulate my mouse handler, and handing the real-mode function pointer
i obtain that way to the mouse handler installation trap.

this seems to get my handler called, but then i crash in a call i make
to "show mouse cursor", using dpmi_simulate_int().

(i know i've been loose with routine names in this message -- i think if
you've been here, you'll know what i'm talking about...)

is there more magic dust i need to sprinkle over the mouse code?

paul

p.s. and hey, what about those newsgroups?  good idea?  :-)
(don't answer that. ;-)