How to discover screen depth (sou

[Richard Saunders]

Doug Arnold's program (v7n24) does an open("/dev/fb",) followed by an
ioctl(,FBIOGTYPE,) to get the fbinfo.  I use a modified version of a
program called fbres.c that came from Chuq von Rospach which does
pr_open() instead.

I ran the two on a 3/110.  displaytype gave:

	Sun 2 or 3 monochrome  900 x 1152 x 1 pixels

whereas fbres gave:

	1152x900C

Here is the source for fbres and how its output can be used in your .login
file (set your path to get /usr/local/bin/`arch`):

/*
 *	fbres.c
 *
 *	Prints out the resolution of the fb pixrect in a
 *	form useful for shell scripts.
 *
 *	Usage: fbres [fb-name]
 */

#include	<stdio.h>
#include	<pixrect/pixrect_hs.h>

main(argc,argv)
int		argc;
char		*argv[];
{
	Pixrect		*fbpr;
	char		*fbname;

	if (argc > 1) fbname = argv[1];
	else fbname = "/dev/fb";

	if ((fbpr = pr_open(fbname)) == NULL) {
		fprintf(stderr, "Couldn't open %s pixrect\n", fbname);
		exit(1);
	}
	printf("%dx%d", fbpr->pr_size.x, fbpr->pr_size.y);
	printf((fbpr->pr_depth > 1 ? "C" : "M"));
	printf("\n");
}

# if you are on the console (you DON'T want to do this when rlogged in!)
# initialize the inputs from the data in your .defaults file
# uses fbres program to check for screen type. Needs SunOS 3.4.
if (`tty` == /dev/console) then
	switch (`fbres`)
	case "1152x900M":
		setenv DEFAULTS_FILE ~/.defaults.lores
		alias st 'exec suntools -pattern ~/icons/rrichter.icon -s ~/.suntools.lores'
		breaksw
	case "1152x900C":
		setenv DEFAULTS_FILE ~/.defaults.lores
		alias st 'exec suntools -pattern ~/icons/rrichter.icon -s ~/.suntools.color'
		breaksw
	case "1600x1280M":
		setenv DEFAULTS_FILE ~/.defaults.hires
		alias st 'exec suntools -pattern ~/icons/rrichter.icon -s ~/.suntools.hires'
		breaksw
	endsw
endif