Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!shadooby!samsung!uunet!portal!cup.portal.com!David_Dave_Tamashiro
From: David_Dave_Tamashiro@cup.portal.com
Newsgroups: comp.sys.ibm.pc
Subject: Re: Turbo C graphics
Message-ID: <23654@cup.portal.com>
Date: 3 Nov 89 05:41:55 GMT
References: <452@qmfl.jrdc.go.jp>
Organization: The Portal System (TM)
Lines: 9

The only way I can think of to XOR lines in Turbo C is to use
the get_image and put_image functions.  After saving the current screen
using get_image(), clear the screen and draw your line.  Then put
the old screen back using put_image() using the XOR option.  This is
slow and kludgy method.

Another gripe I have about the TC graphics package is that the graphics
mode text functions OR themselves on the screen.  This causes me to have
to erase part of the screen whenever I do any screen writes.