Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!udel!burdvax!ubbpc!wgh
From: wgh@ubbpc.UUCP (William G. Hutchison)
Newsgroups: comp.lang.c++
Subject: Zortech C++ Flash Graphics query
Keywords: how to erase graphics characters
Message-ID: <462@ubbpc.UUCP>
Date: 2 Feb 89 00:48:56 GMT
Organization: Unisys UNIX Portation Center, Blue Bell, PA
Lines: 17


  I have been working on a C++ version of Thomas Gettys' C version of Conway's
Game of Life (published in the last issue of MicroCornucopia). Before everybody
starts jumping, let me assure you that I will post it here as soon as I get
permission from the copyright holder.
  The problem I am having is how to erase the old generation number before
displaying the new generation number.
  I have tried writing it with color FG_BLACK:
	fg_puts(FG_BLACK, FG_MODE_SET, ~0, FG_ROT0, x, y, msg, fg_displaybox)
and I have tried overwriting it with xor of white:
	fg_puts(FG_WHITE, FG_MODE_XOR, ~0, FG_ROT0, x, y, msg, fg_displaybox)
but neither works.  What's the trick?
-- 
Bill Hutchison, DP Consultant	rutgers!liberty!burdvax!ubbpc!wgh
Unisys UNIX Portation Center
P.O. Box 500, M.S. B121         "The unexamined life is not worth living!"
Blue Bell, PA 19424            	  -- Educational Testing Service, Princeton, NJ