Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!brutus.cs.uiuc.edu!psuvax1!rutgers!pyrnj!pyrdc!gmu90x!rauletta
From: rauletta@gmu90x.gmu.edu (rauletta)
Newsgroups: comp.windows.x
Subject: DisplayHeightMM/Xqvss
Keywords: Xqvss R4 Server returns incorrect Display Height??
Message-ID: <2550@gmu90x.gmu.edu>
Date: 2 Feb 90 16:59:49 GMT
Distribution: na
Organization: George Mason Univ., Fairfax Va.
Lines: 38


Abstract: Xqvss R4 server (cc & gcc) returns incorrect display size
in millimeters.

The following code (from the xpostit function CreateNewNote)
returns an incorrect display width and height in millimeters
when run against a Xqvss R4 server.

---
 		hpixel = DisplayHeight(display, DefaultScreen(display));
                wpixel = DisplayWidth(display, DefaultScreen(display));

		hmm = DisplayHeightMM(display, DefaultScreen(display));
                wmm = DisplayWidthMM(display, DefaultScreen(display));
                /*hmm = 280;
                wmm = 320;*/
		hpi = (int) ((25.4 * hpixel) / (float) hmm + 0.5);
                wpi = (int) ((25.4 * wpixel) / (float) wmm + 0.5);

        printf("hpixel %d wpixel %d hmm %d wmm %d hpi %d wpi %d\n",
                 hpixel,wpixel,hmm,wmm,hpi,wpi);

-----
The result when a new note is opened is the following:

hpixel 864 wpixel 1024 hmm 10972 wmm 13004 hpi 2 wpi 2
                       ^^^^^^^^^ ^^^^^^^^^

My display does not even come close to 10 by 20 meters?:-) :-(

Any suggestions? Where do I look in the server?
The code works correctly against the R3 server.


Rich Auletta
rauletta@gmuvax2.gmu.edu
(System: Ultrix 3.1/Vax  Xqvss/VS 2000 everything currently
 built using cc, mit fix 1 applied. gcc shows same problem.)