Path: utzoo!utgpu!cunews!bnrgate!brchh104!brchs1!bnr.ca!rice.edu!sun-spots-request
From: st-andy!larry@uunet.uu.net (Larry Martell)
Newsgroups: comp.sys.sun
Subject: Re: Frame buffer depth
Keywords: No Digest Subjects in Unmoderated Mode
Message-ID: <3598@brchh104.bnr.ca>
Date: 5 Jun 91 14:17:00 GMT
Sender: news@brchh104.bnr.ca
Organization: Sunspots, Pseudo-Unmoderated
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Approved: sun-spots@rice.edu
X-Original-Date:    Fri, 24 May 1991 14:14:56 GMT

In article <2883@brchh104.bnr.ca> crawford@eagle.crd.ge.com (Carl Crawford) writes:
>I am using a number of Sparcstations under Sunview. Some of the Sparcs are
>1 bit monochrome and some are 8 bit gray scale. From within a program how
>can you tell which frame buffer your system has?
>

The depth of the frame buffer is kept in the pw_pixrect->pr_depth member
of the Pixwin struct. For a window you get a pointer to the Pixwin struct
using window_get:

Canvas  canvas;
Pixwin  *pw;
	pw = (Pixwin *)window_get(canvas,WIN_PIXWIN);

For a canvas use canvas_pixwin:

	pw = (Pixwin *)canvas_pixwin(canvas);

In ether case the frame buffer depth can be found in:

	pw->pw_pixrect->pr_depth 

See page 108 of ther SunView Programmers Guide: "Is My Application Running
on a Color Display?"
-- 
Larry Martell                  "Opinions are like assholes; everybody has one, 
212-668-9478		        but nobody wants to look at the other guys"
uunet!st-andy!larry