Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ukma!tut.cis.ohio-state.edu!ucbvax!VAXB.ACS.UNT.EDU!DWAYNE
From: DWAYNE@VAXB.ACS.UNT.EDU
Newsgroups: comp.sys.apple
Subject: Files, Windows, & Orca/Pascal
Message-ID: <8902080513.aa00573@SMOKE.BRL.MIL>
Date: 7 Feb 89 18:48:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 17

I am in the middle of delving into the mysteries of the IIgs toolbox and more
exactly windows and their controls.  I read a file into a linked list so that
it is available in memory.  Then in the window content update procedure I dump
the file into the window a line at a time using QDII's DrawText call.  THe
problem is that the whole file gets redrawn whenever the window controls are
accessed or the window is resized.  For large files this can be a pain.  Does
anyone out there know of somw cute algorithm to redraw only that part of the
file that will be displayed?  It would certainly speed things up.  I'm writing
this in Orca/Pascal, but if you have any code at all (TML Basic, TML Pascal, or
Assembley Language) I'd like to take a look at it.  I know that there has to be
a better way.

thanks,
dwayne
-----------
BitNet : dwayne@untvaxa
ALPE : Dwayne Spr