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
48
49
50
51
52
53
54
55
|
/*
* 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.
*
* $XConsortium$
*/
>>TITLE XFreeGC CH05
void
XFreeGC(display, gc)
Display *display = Dsp;
GC gc;
>>ASSERTION Good A
A call to xname destroys the GC specified by the
.A gc
argument, and all associated storage.
>>STRATEGY
Create a GC with XCreateGC.
Free the GC with XFreeGC.
Set the clip mask of the gc with XSetClipMask.
Verify that a BadGC error occurred.
>>CODE
gc = XCreateGC(display, DRW(display), 0L, (XGCValues*)0);
XCALL;
startcall(Dsp);
XSetClipMask(display, gc, None);
endcall(Dsp);
if(geterr() != BadGC) {
report("After a successful call to XFreeGC, a call to XSetClipMask");
report("did not give a BadGC error but instead gave %s", errorname(geterr()));
FAIL;
} else
CHECK;
CHECKPASS(1);
>>ASSERTION Good A
.ER BadGC
>>#HISTORY Cal Completed Written in new format and style 7/12/90.
>>#HISTORY Kieron Completed <Have a look>
>>#HISTORY Cal Action Writing code.
|