Text and Graphic mode programming for the IBM PC

[William T. Dedula]

Hello All;
I have a fairly simple question to ask. I am writing a "C" 
program for a CGA (Yak ... does anyone use these anymore ???) 
where I would like to utilize BOTH a text-only mode, and a 
high resolution graphics mode in the same program. My question
is ... is it possible to use both modes and to switch between 
them with the data on the screen staying intact ??? My guess 
(without trying it) would be NO. I wouldn't mind using the 
the Graphics mode only but I will require that certain characters
appear in reverse video and that some of them flash. Is there 
a way to make make the graphics character set (In Turbo "C") 
flash or appear in reverse video or is there any other 
way to do it ??? By graphics character set, I mean the characters
displayed with settextstyle(???), and outtext(???) !!! 

Thank You VERY MUCH for your assistance ...



W. Tim Dedula                        Internet: 
N.A.S.A. Lewis Research Center       tdedula at nasamail.nasa.gov
Mail Stop 77-3                       tidedu at mars.lerc.nasa.gov
21000 BrookPark Road                 aa252 at cleveland.freenet.edu
Cleveland, Ohio 44135
Phone (216) 433-3668

The National Aeronautics and Space Administration: Science and
Technology ... for the Benefit of ALL Mankind !!!