1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/*
* Copyright 1990, 1991 by the Massachusetts Institute of Technology and
* UniSoft Group Limited.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the names of MIT and UniSoft not be
* used in advertising or publicity pertaining to distribution of th * software without specific, written prior permission. MIT and UniSoft
* make no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* $XConsortium$
*/
>>SET macro
>>TITLE XDisplayWidth CH02
int
XDisplayWidth(display, screen_number)
Display *display = Dsp;
int screen_number = DefaultScreen(Dsp);
>>ASSERTION Good A
A call to xname returns the width in pixels of the screen
.A screen_number .
>>STRATEGY
Obtain the width of the root window using XGetWindowAttributes.
Obtain the pixel width of the screen using xname.
Verify that the two numbers are the same.
>>CODE
XWindowAttributes atts;
int width;
if(XGetWindowAttributes(display, RootWindow(display, screen_number), &atts) == 0) {
report("XGetWindowAttributes() returned zero.");
FAIL;
} else
CHECK;
width = XCALL;
if(width != atts.width) {
report("%s() returned %d instead of %d.", TestName, width, atts.width);
FAIL;
} else
CHECK;
CHECKPASS(2);
|
