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95df8112 GM |
1 | /* runemacs --- Simple program to start Emacs with its console window hidden. |
2 | ||
3 | Copyright (C) 2001-2011 Free Software Foundation, Inc. | |
b65d8176 TTN |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
eef0be9e | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
b65d8176 | 8 | it under the terms of the GNU General Public License as published by |
eef0be9e GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
b65d8176 TTN |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
eef0be9e | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
b65d8176 TTN |
19 | |
20 | ||
c911543b GV |
21 | /* |
22 | Simple program to start Emacs with its console window hidden. | |
23 | ||
24 | This program is provided purely for convenience, since most users will | |
25 | use Emacs in windowing (GUI) mode, and will not want to have an extra | |
26 | console window lying around. */ | |
27 | ||
662463d9 RS |
28 | /* |
29 | You may want to define this if you want to be able to install updated | |
30 | emacs binaries even when other users are using the current version. | |
31 | The problem with some file servers (notably Novell) is that an open | |
32 | file cannot be overwritten, deleted, or even renamed. So if someone | |
33 | is running emacs.exe already, you cannot install a newer version. | |
34 | By defining CHOOSE_NEWEST_EXE, you can name your new emacs.exe | |
35 | something else which matches "emacs*.exe", and runemacs will | |
4da0d3f7 | 36 | automatically select the newest emacs executable in the bin directory. |
662463d9 RS |
37 | (So you'll probably be able to delete the old version some hours/days |
38 | later). | |
39 | */ | |
40 | ||
41 | /* #define CHOOSE_NEWEST_EXE */ | |
42 | ||
c911543b GV |
43 | #include <windows.h> |
44 | #include <string.h> | |
45 | #include <malloc.h> | |
46 | ||
361358ea | 47 | static void set_user_model_id (void); |
ff90fbde | 48 | |
c911543b GV |
49 | int WINAPI |
50 | WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow) | |
51 | { | |
52 | STARTUPINFO start; | |
53 | SECURITY_ATTRIBUTES sec_attrs; | |
c911543b GV |
54 | PROCESS_INFORMATION child; |
55 | int wait_for_child = FALSE; | |
05c4be3c | 56 | DWORD priority_class = NORMAL_PRIORITY_CLASS; |
c911543b | 57 | DWORD ret_code = 0; |
662463d9 RS |
58 | char *new_cmdline; |
59 | char *p; | |
c911543b GV |
60 | char modname[MAX_PATH]; |
61 | ||
ff90fbde JR |
62 | set_user_model_id (); |
63 | ||
c911543b GV |
64 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) |
65 | goto error; | |
66 | if ((p = strrchr (modname, '\\')) == NULL) | |
67 | goto error; | |
68 | *p = 0; | |
69 | ||
0ac7bf6c JR |
70 | new_cmdline = alloca (MAX_PATH + strlen (cmdline) + 3); |
71 | /* Quote executable name in case of spaces in the path. */ | |
72 | *new_cmdline = '"'; | |
73 | strcpy (new_cmdline + 1, modname); | |
c911543b | 74 | |
662463d9 | 75 | #ifdef CHOOSE_NEWEST_EXE |
c911543b | 76 | { |
662463d9 RS |
77 | /* Silly hack to allow new versions to be installed on |
78 | server even when current version is in use. */ | |
79 | ||
80 | char * best_name = alloca (MAX_PATH + 1); | |
81 | FILETIME best_time = {0,0}; | |
82 | WIN32_FIND_DATA wfd; | |
83 | HANDLE fh; | |
84 | p = new_cmdline + strlen (new_cmdline); | |
0ac7bf6c | 85 | strcpy (p, "\\emacs*.exe\" "); |
662463d9 RS |
86 | fh = FindFirstFile (new_cmdline, &wfd); |
87 | if (fh == INVALID_HANDLE_VALUE) | |
88 | goto error; | |
89 | do | |
90 | { | |
4da0d3f7 JB |
91 | if (wfd.ftLastWriteTime.dwHighDateTime > best_time.dwHighDateTime |
92 | || (wfd.ftLastWriteTime.dwHighDateTime == best_time.dwHighDateTime | |
93 | && wfd.ftLastWriteTime.dwLowDateTime > best_time.dwLowDateTime)) | |
94 | { | |
95 | best_time = wfd.ftLastWriteTime; | |
96 | strcpy (best_name, wfd.cFileName); | |
97 | } | |
662463d9 RS |
98 | } |
99 | while (FindNextFile (fh, &wfd)); | |
100 | FindClose (fh); | |
101 | *p++ = '\\'; | |
102 | strcpy (p, best_name); | |
103 | strcat (p, " "); | |
c911543b | 104 | } |
662463d9 | 105 | #else |
0ac7bf6c | 106 | strcat (new_cmdline, "\\emacs.exe\" "); |
662463d9 RS |
107 | #endif |
108 | ||
05c4be3c GV |
109 | /* Append original arguments if any; first look for arguments we |
110 | recognise (-wait, -high, and -low), and apply them ourselves. */ | |
111 | while (cmdline[0] == '-' || cmdline[0] == '/') | |
662463d9 | 112 | { |
05c4be3c GV |
113 | if (strncmp (cmdline+1, "wait", 4) == 0) |
114 | { | |
4da0d3f7 JB |
115 | wait_for_child = TRUE; |
116 | cmdline += 5; | |
117 | } | |
05c4be3c GV |
118 | else if (strncmp (cmdline+1, "high", 4) == 0) |
119 | { | |
120 | priority_class = HIGH_PRIORITY_CLASS; | |
121 | cmdline += 5; | |
122 | } | |
123 | else if (strncmp (cmdline+1, "low", 3) == 0) | |
124 | { | |
125 | priority_class = IDLE_PRIORITY_CLASS; | |
126 | cmdline += 4; | |
127 | } | |
128 | else | |
129 | break; | |
4da0d3f7 JB |
130 | /* Look for next argument. */ |
131 | while (*++cmdline == ' '); | |
05c4be3c | 132 | } |
4da0d3f7 | 133 | |
c911543b GV |
134 | strcat (new_cmdline, cmdline); |
135 | ||
662463d9 | 136 | /* Set emacs_dir variable if runemacs was in "%emacs_dir%\bin". */ |
c911543b | 137 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) |
662463d9 RS |
138 | { |
139 | *p = 0; | |
140 | for (p = modname; *p; p++) | |
141 | if (*p == '\\') *p = '/'; | |
142 | SetEnvironmentVariable ("emacs_dir", modname); | |
143 | } | |
c911543b GV |
144 | |
145 | memset (&start, 0, sizeof (start)); | |
146 | start.cb = sizeof (start); | |
3bb69bbd | 147 | start.dwFlags = STARTF_USESHOWWINDOW | STARTF_USECOUNTCHARS; |
c911543b | 148 | start.wShowWindow = SW_HIDE; |
3bb69bbd JR |
149 | /* Ensure that we don't waste memory if the user has specified a huge |
150 | default screen buffer for command windows. */ | |
151 | start.dwXCountChars = 80; | |
152 | start.dwYCountChars = 25; | |
c911543b GV |
153 | |
154 | sec_attrs.nLength = sizeof (sec_attrs); | |
155 | sec_attrs.lpSecurityDescriptor = NULL; | |
156 | sec_attrs.bInheritHandle = FALSE; | |
157 | ||
05c4be3c | 158 | if (CreateProcess (NULL, new_cmdline, &sec_attrs, NULL, TRUE, priority_class, |
1e3c9713 | 159 | NULL, NULL, &start, &child)) |
c911543b GV |
160 | { |
161 | if (wait_for_child) | |
162 | { | |
163 | WaitForSingleObject (child.hProcess, INFINITE); | |
164 | GetExitCodeProcess (child.hProcess, &ret_code); | |
165 | } | |
166 | CloseHandle (child.hThread); | |
167 | CloseHandle (child.hProcess); | |
168 | } | |
169 | else | |
170 | goto error; | |
171 | return (int) ret_code; | |
172 | ||
173 | error: | |
174 | MessageBox (NULL, "Could not start Emacs.", "Error", MB_ICONSTOP); | |
175 | return 1; | |
176 | } | |
ab5796a9 | 177 | |
7c3320d8 JB |
178 | void |
179 | set_user_model_id (void) | |
ff90fbde JR |
180 | { |
181 | HMODULE shell; | |
0a3472c7 | 182 | HRESULT (WINAPI * set_user_model) (wchar_t * id); |
ff90fbde JR |
183 | |
184 | /* On Windows 7 and later, we need to set the user model ID | |
185 | to associate emacsclient launched files with Emacs frames | |
186 | in the UI. */ | |
187 | shell = LoadLibrary ("shell32.dll"); | |
188 | if (shell) | |
189 | { | |
190 | set_user_model | |
191 | = (void *) GetProcAddress (shell, | |
192 | "SetCurrentProcessExplicitAppUserModelID"); | |
193 | ||
194 | /* If the function is defined, then we are running on Windows 7 | |
195 | or newer, and the UI uses this to group related windows | |
196 | together. Since emacs, runemacs, emacsclient are related, we | |
197 | want them grouped even though the executables are different, | |
198 | so we need to set a consistent ID between them. */ | |
199 | if (set_user_model) | |
200 | set_user_model (L"GNU.Emacs"); | |
201 | ||
202 | FreeLibrary (shell); | |
203 | } | |
204 | } | |
205 |