Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!amdahl!pacbell!ptsfa!res
From: res@ptsfa.PacBell.COM (stockwell-1140galaxy-Bob Stockwell)
Newsgroups: comp.sys.ibm.pc
Subject: Turbo C and Microsoft Mouse problems
Message-ID: <4630@ptsfa.PacBell.COM>
Date: 31 Dec 88 20:05:02 GMT
Organization: Pacific * Bell, San Ramon, CA
Lines: 30


I recently purchased Turbo C 2.0, and I thought I would 
try my hand at Mouse programming.  But I ran into a brick 
wall, and I wonder if anyone can help.

My problem is that I can't keep up with the mouse motion.  
I want to plot some points on the screen, but I can't 
track the mouse fast enough to plot them.  I first tried 
doing Mouse (Microsoft) function 3 (Get Status), in a 
polling fashion.  That was far too slow.  Then I resorted 
to function 12 (Set Subroutine).  Figuring that I would 
keep up with the mouse, but probably slow it down at 
worse.  Instead I experienced the same problem.  I don't 
understand why I can't plot a single point, in the same 
time that the mouse driver is able to replot the whole 
cursor.  It seems that my subroutine is not being called 
consistently.  I would like to avoid writing an assembler 
subroutine, partly because I'm not real adept at 
assembler, but mostly I don't believe that Turbo C is 
making all that much difference.  I tested it's graphics 
capabilities and it was able to plot 10,000 points in 
about 2 seconds.  

Does anyone have any experience with Turbo C and 
Microsoft Mouse (and EGA).  Working code would be nice :-) 

Thanks,

Bob Stockwell
pacbell!ptsfa!res