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/*
* 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 the
* 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 XDisplayCells CH02
int
XDisplayCells(display, screen_number)
Display *display = Dsp;
int screen_number = DefaultScreen(Dsp);
>>ASSERTION Good A
A call to xname returns the number of colour cells in the default colourmap
of the screen specified by the
.A screen_number
argument.
>>STRATEGY
Obtain the default visual using XDefaultVisual.
Obtain the XVisualInfo structure corresponding to the DefaultVisual using XGetVisualInfo.
Obtain the number of colormap entries in the default visual from the structure.
Obtain the number of colormap entries in the default colormap using xname.
Verify that the number of cells is the same.
>>CODE
Visual *dv;
int nv;
int dnc;
XVisualInfo vit;
XVisualInfo *vil;
dv = XDefaultVisual(display, screen_number);
vit.visualid = XVisualIDFromVisual(dv);
if((vil = XGetVisualInfo(display, VisualIDMask, &vit, &nv)) == (XVisualInfo *) NULL) {
delete("XGetVisualInfo() returned NULL.");
return;
} else
CHECK;
dnc = XCALL;
if(dnc != vil->colormap_size) {
report("%s() returned %d colourmap cells instead of %d.", TestName, dnc, vil->colormap_size);
FAIL;
} else
CHECK;
XFree((char *) vil);
CHECKPASS(2);
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