Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!umich!yale!cs.yale.edu!tarr-michael
From: tarr-michael@CS.YALE.EDU (michael tarr)
Newsgroups: comp.sys.mac.programmer
Subject: Re: An Obscure Lightspeed C/MPW C Incompatibility
Message-ID: <15993@cs.yale.edu>
Date: 16 Feb 90 19:20:38 GMT
References: <1256@kl-cs.UUCP> <6752@internal.Apple.COM>
Sender: news@cs.yale.edu
Reply-To: tarr-michael@CS.YALE.EDU (michael tarr)
Organization: Yale University Computer Science Dept, New Haven CT  06520-2158
Lines: 38


I am looking for anyone willing to share LSC 4.0 code fragments that do
the following:
                                                                               
1. Create 1 or more offscreen pixmaps that I can draw or read a PICT2
file into.
     
2. Use copybits to move the offscreen maps to the visible window as fast
as possible.
   
                                                                        
I need to support 8 bit color and full screen images. One possibility is
buying a graphics library sold commercially. Does anyone know if such a
package exists -- there are lots for the IBMPC.
                                                                      
I am also looking for code fragments to force the menu bar to disappear
so that the visible window covers the entire screen.
                                                                            
The reason for all this is that I am an experimental psychologist that
wants to show images on the mac for experiments. The basic idea is to
throw up pictures that have been drawn beforehand as quickly is
possible. After the software is written I plan to distribute it **free**
to any psychologists who are interested in using it. I am rather annoyed
at academics who have developed packages and now sell it without sources
-- their stuff won't do what I want and I can't make use of techniques
they have discovered in my own programs since they won't share. Doesn't
seem very neighborly or in the spirit of the larger intellectual
community.

Last question: does anyone know if the EventRecord.when field returned
with a keyDown from WaitNextEvent is always guaranteed to be correct, no
matter what the system was doing at the time the key was pressed?

Thanks,

Mike Tarr
Yale University
tarr@yale.cs.edu or mtarr@yalevm.bitnet