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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/****************************************************************************
* graphics/nxmu/nx_openwindow.c
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdlib.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx.h>
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nx_openwindow
*
* Description:
* Create a new window.
*
* Input Parameters:
* handle - The handle returned by nx_connect
* cb - Callbacks used to process windo events
*
* Return:
* Success: A non-NULL handle used with subsequent NX accesses
* Failure: NULL is returned and errno is set appropriately
*
****************************************************************************/
NXWINDOW nx_openwindow(NXHANDLE handle, FAR const struct nx_callback_s *cb)
{
FAR struct nxfe_conn_s *conn = (FAR struct nxfe_conn_s *)handle;
FAR struct nxbe_window_s *wnd;
struct nxsvrmsg_openwindow_s outmsg;
int ret;
#ifdef CONFIG_DEBUG
if (!conn || !cb)
{
errno = EINVAL;
return NULL;
}
#endif
/* Pre-allocate the window structure */
wnd = (FAR struct nxbe_window_s *)zalloc(sizeof(struct nxbe_window_s));
if (!wnd)
{
errno = ENOMEM;
return NULL;
}
/* Setup only the connection structure. We'll need this to communicate with
* the server. The server will set everything else up.
*/
wnd->conn = conn;
wnd->cb = cb;
/* Request initialization the new window from the server */
outmsg.msgid = NX_SVRMSG_OPENWINDOW;
outmsg.wnd = wnd;
ret = mq_send(conn->cwrmq, &outmsg, sizeof(struct nxsvrmsg_openwindow_s), NX_SVRMSG_PRIO);
if (ret < 0)
{
gdbg("mq_send failed: %d\n", errno);
free(wnd);
return NULL;
}
/* Return the uninitialized window reference. Since the server
* serializes all operations, we can be assured that the window will
* be initialized before the first operation on the window.
*/
return (NXWINDOW)wnd;
}
|
