XGtSelect.c revision 06c34b88 
1/************************************************************
2
3Copyright 1989, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25Copyright 1989 by Hewlett-Packard Company, Palo Alto, California.
26
27			All Rights Reserved
28
29Permission to use, copy, modify, and distribute this software and its
30documentation for any purpose and without fee is hereby granted,
31provided that the above copyright notice appear in all copies and that
32both that copyright notice and this permission notice appear in
33supporting documentation, and that the name of Hewlett-Packard not be
34used in advertising or publicity pertaining to distribution of the
35software without specific, written prior permission.
36
37HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39HEWLETT-PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43SOFTWARE.
44
45********************************************************/
46
47/***********************************************************************
48 *
49 * XGetSelectedExtensionEvents - return a list of currently selected events.
50 *
51 */
52#ifdef HAVE_CONFIG_H
53#include <config.h>
54#endif
55
56#include <X11/extensions/XI.h>
57#include <X11/extensions/XIproto.h>
58#include <X11/Xlibint.h>
59#include <X11/extensions/XInput.h>
60#include <X11/extensions/extutil.h>
61#include "XIint.h"
62
63int
64XGetSelectedExtensionEvents(
65    register Display	 *dpy,
66    Window		  w,
67    int			 *this_client_count,
68    XEventClass		**this_client_list,
69    int			 *all_clients_count,
70    XEventClass		**all_clients_list)
71{
72    int tlen, alen;
73    register xGetSelectedExtensionEventsReq *req;
74    xGetSelectedExtensionEventsReply rep;
75    XExtDisplayInfo *info = XInput_find_display(dpy);
76
77    LockDisplay(dpy);
78    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
79	return (NoSuchExtension);
80    GetReq(GetSelectedExtensionEvents, req);
81
82    req->reqType = info->codes->major_opcode;
83    req->ReqType = X_GetSelectedExtensionEvents;
84    req->window = w;
85
86    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
87	UnlockDisplay(dpy);
88	SyncHandle();
89	return Success;
90    }
91
92    *this_client_count = rep.this_client_count;
93    *all_clients_count = rep.all_clients_count;
94
95    if (rep.length) {
96	int i;
97	CARD32 ec;
98
99	tlen = (*this_client_count) * sizeof(CARD32);
100	alen = (rep.length << 2) - tlen;
101
102	if (tlen) {
103	    *this_client_list =
104		(XEventClass *) Xmalloc(*this_client_count *
105					sizeof(XEventClass));
106	    if (!*this_client_list) {
107		_XEatDataWords(dpy, rep.length);
108                UnlockDisplay(dpy);
109                SyncHandle();
110		return (Success);
111	    }
112	    for (i = 0; i < *this_client_count; i++) {
113		_XRead(dpy, (char *)(&ec), sizeof(CARD32));
114		(*this_client_list)[i] = (XEventClass) ec;
115	    }
116	} else
117	    *this_client_list = (XEventClass *) NULL;
118	if (alen) {
119	    *all_clients_list =
120		(XEventClass *) Xmalloc(*all_clients_count *
121					sizeof(XEventClass));
122	    if (!*all_clients_list) {
123		Xfree((char *)*this_client_list);
124		*this_client_list = NULL;
125		_XEatData(dpy, (unsigned long)alen);
126                UnlockDisplay(dpy);
127                SyncHandle();
128		return (Success);
129	    }
130	    for (i = 0; i < *all_clients_count; i++) {
131		_XRead(dpy, (char *)(&ec), sizeof(CARD32));
132		(*all_clients_list)[i] = (XEventClass) ec;
133	    }
134	} else
135	    *all_clients_list = (XEventClass *) NULL;
136
137    }
138
139    UnlockDisplay(dpy);
140    SyncHandle();
141    return (Success);
142}
143