XGtSelect.c revision c27c18e8 
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
53#include <X11/extensions/XI.h>
54#include <X11/extensions/XIproto.h>
55#include <X11/Xlibint.h>
56#include <X11/extensions/XInput.h>
57#include <X11/extensions/extutil.h>
58#include "XIint.h"
59
60int
61XGetSelectedExtensionEvents(
62    register Display	 *dpy,
63    Window		  w,
64    int			 *this_client_count,
65    XEventClass		**this_client_list,
66    int			 *all_clients_count,
67    XEventClass		**all_clients_list)
68{
69    int tlen, alen;
70    register xGetSelectedExtensionEventsReq *req;
71    xGetSelectedExtensionEventsReply rep;
72    XExtDisplayInfo *info = XInput_find_display(dpy);
73
74    LockDisplay(dpy);
75    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
76	return (NoSuchExtension);
77    GetReq(GetSelectedExtensionEvents, req);
78
79    req->reqType = info->codes->major_opcode;
80    req->ReqType = X_GetSelectedExtensionEvents;
81    req->window = w;
82
83    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
84	UnlockDisplay(dpy);
85	SyncHandle();
86	return Success;
87    }
88
89    *this_client_count = rep.this_client_count;
90    *all_clients_count = rep.all_clients_count;
91
92    if (rep.length) {
93	int i;
94	CARD32 ec;
95
96	tlen = (*this_client_count) * sizeof(CARD32);
97	alen = (rep.length << 2) - tlen;
98
99	if (tlen) {
100	    *this_client_list =
101		(XEventClass *) Xmalloc(*this_client_count *
102					sizeof(XEventClass));
103	    if (!*this_client_list) {
104		_XEatData(dpy, (unsigned long)tlen + alen);
105                UnlockDisplay(dpy);
106                SyncHandle();
107		return (Success);
108	    }
109	    for (i = 0; i < *this_client_count; i++) {
110		_XRead(dpy, (char *)(&ec), sizeof(CARD32));
111		(*this_client_list)[i] = (XEventClass) ec;
112	    }
113	} else
114	    *this_client_list = (XEventClass *) NULL;
115	if (alen) {
116	    *all_clients_list =
117		(XEventClass *) Xmalloc(*all_clients_count *
118					sizeof(XEventClass));
119	    if (!*all_clients_list) {
120		Xfree((char *)*this_client_list);
121		*this_client_list = NULL;
122		_XEatData(dpy, (unsigned long)alen);
123                UnlockDisplay(dpy);
124                SyncHandle();
125		return (Success);
126	    }
127	    for (i = 0; i < *all_clients_count; i++) {
128		_XRead(dpy, (char *)(&ec), sizeof(CARD32));
129		(*all_clients_list)[i] = (XEventClass) ec;
130	    }
131	} else
132	    *all_clients_list = (XEventClass *) NULL;
133
134    }
135
136    UnlockDisplay(dpy);
137    SyncHandle();
138    return (Success);
139}
140