[comp.sys.ibm.pc] How can I use two monitors under Microsoft C 5.1?

foote@miro.Berkeley.EDU (Bill Foote) (05/28/89)

I have two monitors hooked up to my PC (one is a CGA, the other
a Hercules-compatable monochrome adaptor).  I'd like to be able
to write an application that does text input/output on one screen,
while generating graphics on the other.  Is there some way that I
can fool Microsoft C 5.1 into letting me do this?  I've tried this
code (running the program after doing a "mode co80"):

	_setvideomode(some graphics mode);
	draw some lines;
	system("mode mono");
	draw some more lines;
	printf("This is where the problem is\n");

This works, i.e. the graphics go to the CGA, and the text goes to the
MGA, _BUT_ the sync to the color monitor get all screwed up as soon as
I start sending text to stdout.  I assume that the graphics library
routines are intecepting my text output and trying to put them on the
CGA screen somehow.

I've tried a couple of variations on this scheme, with no luck.

Currently I'm using my own graphics routines that directly access
the hardware, but it would sure be nice if I could use MSC's nice
library routines.

Any suggestions would be appreciated.

Thanks in advance,

Bill Foote
foote@miro.Berkeley.EDU
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