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From: daven@maxine.wpi (Dave Nedde)
Newsgroups: comp.windows.x
Subject: DisplayHeightMM accuracy?
Message-ID: <1991May15.134203.22048@wpi.WPI.EDU>
Date: 15 May 91 13:42:03 GMT
Sender: news@wpi.WPI.EDU (News)
Organization: Worcester Polytechnic Institute
Lines: 23
Nntp-Posting-Host: ash.wpi.edu


I tried using the DisplayHeightMM macro to get the height and width of
my screen and the results were:
  Sun spacrstation with a mono screen was an inch too large
  Sun 4 with a color screen was an inch too short
  DecStation 3100 with a color screen was just right

  What is the use of having this macro if the results aren't valid?

Here is the code snippet I used to get the screen width:
---
#define MM_PER_INCH 25.4
  
 printf("Screen is %d pixels high, %d mm, and %lg inches high\n",
	DisplayHeight(XtDisplay(w),DefaultScreen(XtDisplay(w))),
	DisplayHeightMM(XtDisplay(w),DefaultScreen(XtDisplay(w))),
	DisplayHeightMM(XtDisplay(w),DefaultScreen(XtDisplay(w)))/MM_PER_INCH);
---

  -DaveN
--
:^| HAVE A DAY.				David Nedde
daven@{maxine|wpi}.wpi.edu		CS Dept. WPI Worcester, MA 01609