1 /*
2 * SHAppBarMessage implementation
3 *
4 * Copyright 2008 Vincent Povirk for CodeWeavers
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22
23 #include <stdlib.h>
24 #include <string.h>
25 #include <stdarg.h>
26 #include <stdio.h>
27
28 #include "windef.h"
29 #include "winbase.h"
30 #include "winerror.h"
31 #include "shellapi.h"
32 #include "winuser.h"
33
34 #include "wine/debug.h"
35 #include "wine/unicode.h"
36
37 WINE_DEFAULT_DEBUG_CHANNEL(appbar);
38
39 struct appbar_data_msg /* platform-independent data */
40 {
41 ULONG hWnd;
42 UINT uCallbackMessage;
43 UINT uEdge;
44 RECT rc;
45 ULONGLONG lParam;
46 };
47
48 struct appbar_cmd
49 {
50 ULONG return_map;
51 DWORD return_process;
52 struct appbar_data_msg abd;
53 };
54
55 struct appbar_response
56 {
57 ULONGLONG result;
58 struct appbar_data_msg abd;
59 };
60
61 /*************************************************************************
62 * SHAppBarMessage [SHELL32.@]
63 */
64 UINT_PTR WINAPI SHAppBarMessage(DWORD msg, PAPPBARDATA data)
65 {
66 struct appbar_cmd command;
67 struct appbar_response* response;
68 HANDLE return_map;
69 LPVOID return_view;
70 HWND appbarmsg_window;
71 COPYDATASTRUCT cds;
72 DWORD_PTR msg_result;
73 static const WCHAR classname[] = {'W','i','n','e','A','p','p','B','a','r',0};
74
75 UINT_PTR ret = 0;
76
77 TRACE("msg=%d, data={cb=%d, hwnd=%p, callback=%x, edge=%d, rc=%s, lparam=%lx}\n",
78 msg, data->cbSize, data->hWnd, data->uCallbackMessage, data->uEdge,
79 wine_dbgstr_rect(&data->rc), data->lParam);
80
81 if (data->cbSize < sizeof(APPBARDATA))
82 {
83 WARN("data at %p is too small\n", data);
84 return FALSE;
85 }
86
87 command.abd.hWnd = HandleToLong( data->hWnd );
88 command.abd.uCallbackMessage = data->uCallbackMessage;
89 command.abd.uEdge = data->uEdge;
90 command.abd.rc = data->rc;
91 command.abd.lParam = data->lParam;
92
93 return_map = CreateFileMappingW(INVALID_HANDLE_VALUE, 0, PAGE_READWRITE, 0, sizeof(struct appbar_response), NULL);
94 if (return_map == NULL)
95 {
96 ERR("couldn't create file mapping\n");
97 return 0;
98 }
99 command.return_map = HandleToUlong( return_map );
100
101 command.return_process = GetCurrentProcessId();
102
103 appbarmsg_window = FindWindowW(classname, NULL);
104 if (appbarmsg_window == NULL)
105 {
106 ERR("couldn't find appbar window\n");
107 CloseHandle(return_map);
108 return 0;
109 }
110
111 cds.dwData = msg;
112 cds.cbData = sizeof(command);
113 cds.lpData = &command;
114
115 SendMessageTimeoutW(appbarmsg_window, WM_COPYDATA, (WPARAM)data->hWnd, (LPARAM)&cds, SMTO_BLOCK, INFINITE, &msg_result);
116
117 return_view = MapViewOfFile(return_map, FILE_MAP_READ, 0, 0, sizeof(struct appbar_response));
118 if (return_view == NULL)
119 {
120 ERR("MapViewOfFile failed\n");
121 CloseHandle(return_map);
122 return 0;
123 }
124
125 response = return_view;
126
127 ret = response->result;
128 if (ret)
129 {
130 data->hWnd = UlongToHandle( response->abd.hWnd );
131 data->uCallbackMessage = response->abd.uCallbackMessage;
132 data->uEdge = response->abd.uEdge;
133 data->rc = response->abd.rc;
134 data->lParam = response->abd.lParam;
135 }
136 UnmapViewOfFile(return_view);
137
138 CloseHandle(return_map);
139
140 return ret;
141 }
142
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