Commit | Line | Data |
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95df8112 GM |
1 | /* runemacs --- Simple program to start Emacs with its console window hidden. |
2 | ||
ba318903 | 3 | Copyright (C) 2001-2014 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); |
fc5f9b45 | 48 | static int ensure_unicows_dll (void); |
ff90fbde | 49 | |
c911543b GV |
50 | int WINAPI |
51 | WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow) | |
52 | { | |
53 | STARTUPINFO start; | |
54 | SECURITY_ATTRIBUTES sec_attrs; | |
c911543b GV |
55 | PROCESS_INFORMATION child; |
56 | int wait_for_child = FALSE; | |
05c4be3c | 57 | DWORD priority_class = NORMAL_PRIORITY_CLASS; |
c911543b | 58 | DWORD ret_code = 0; |
662463d9 RS |
59 | char *new_cmdline; |
60 | char *p; | |
c911543b GV |
61 | char modname[MAX_PATH]; |
62 | ||
fc5f9b45 EZ |
63 | if (!ensure_unicows_dll ()) |
64 | goto error; | |
65 | ||
ff90fbde JR |
66 | set_user_model_id (); |
67 | ||
c911543b GV |
68 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) |
69 | goto error; | |
70 | if ((p = strrchr (modname, '\\')) == NULL) | |
71 | goto error; | |
72 | *p = 0; | |
73 | ||
0ac7bf6c JR |
74 | new_cmdline = alloca (MAX_PATH + strlen (cmdline) + 3); |
75 | /* Quote executable name in case of spaces in the path. */ | |
76 | *new_cmdline = '"'; | |
77 | strcpy (new_cmdline + 1, modname); | |
3e2af348 EZ |
78 | /* Detect and handle un-installed runemacs.exe in nt/ subdirectory, |
79 | while emacs.exe is in src/. */ | |
80 | if ((p = strrchr (new_cmdline, '\\')) != NULL | |
81 | && stricmp (p, "\\nt") == 0) | |
82 | strcpy (p, "\\src"); | |
c911543b | 83 | |
662463d9 | 84 | #ifdef CHOOSE_NEWEST_EXE |
c911543b | 85 | { |
662463d9 RS |
86 | /* Silly hack to allow new versions to be installed on |
87 | server even when current version is in use. */ | |
88 | ||
89 | char * best_name = alloca (MAX_PATH + 1); | |
90 | FILETIME best_time = {0,0}; | |
91 | WIN32_FIND_DATA wfd; | |
92 | HANDLE fh; | |
93 | p = new_cmdline + strlen (new_cmdline); | |
0ac7bf6c | 94 | strcpy (p, "\\emacs*.exe\" "); |
662463d9 RS |
95 | fh = FindFirstFile (new_cmdline, &wfd); |
96 | if (fh == INVALID_HANDLE_VALUE) | |
97 | goto error; | |
98 | do | |
99 | { | |
4da0d3f7 JB |
100 | if (wfd.ftLastWriteTime.dwHighDateTime > best_time.dwHighDateTime |
101 | || (wfd.ftLastWriteTime.dwHighDateTime == best_time.dwHighDateTime | |
102 | && wfd.ftLastWriteTime.dwLowDateTime > best_time.dwLowDateTime)) | |
103 | { | |
104 | best_time = wfd.ftLastWriteTime; | |
105 | strcpy (best_name, wfd.cFileName); | |
106 | } | |
662463d9 RS |
107 | } |
108 | while (FindNextFile (fh, &wfd)); | |
109 | FindClose (fh); | |
110 | *p++ = '\\'; | |
111 | strcpy (p, best_name); | |
112 | strcat (p, " "); | |
c911543b | 113 | } |
662463d9 | 114 | #else |
0ac7bf6c | 115 | strcat (new_cmdline, "\\emacs.exe\" "); |
662463d9 RS |
116 | #endif |
117 | ||
05c4be3c | 118 | /* Append original arguments if any; first look for arguments we |
e1dbe924 | 119 | recognize (-wait, -high, and -low), and apply them ourselves. */ |
05c4be3c | 120 | while (cmdline[0] == '-' || cmdline[0] == '/') |
662463d9 | 121 | { |
05c4be3c GV |
122 | if (strncmp (cmdline+1, "wait", 4) == 0) |
123 | { | |
4da0d3f7 JB |
124 | wait_for_child = TRUE; |
125 | cmdline += 5; | |
126 | } | |
05c4be3c GV |
127 | else if (strncmp (cmdline+1, "high", 4) == 0) |
128 | { | |
129 | priority_class = HIGH_PRIORITY_CLASS; | |
130 | cmdline += 5; | |
131 | } | |
132 | else if (strncmp (cmdline+1, "low", 3) == 0) | |
133 | { | |
134 | priority_class = IDLE_PRIORITY_CLASS; | |
135 | cmdline += 4; | |
136 | } | |
137 | else | |
138 | break; | |
4da0d3f7 JB |
139 | /* Look for next argument. */ |
140 | while (*++cmdline == ' '); | |
05c4be3c | 141 | } |
4da0d3f7 | 142 | |
c911543b GV |
143 | strcat (new_cmdline, cmdline); |
144 | ||
662463d9 | 145 | /* Set emacs_dir variable if runemacs was in "%emacs_dir%\bin". */ |
c911543b | 146 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) |
662463d9 RS |
147 | { |
148 | *p = 0; | |
149 | for (p = modname; *p; p++) | |
150 | if (*p == '\\') *p = '/'; | |
151 | SetEnvironmentVariable ("emacs_dir", modname); | |
152 | } | |
c911543b GV |
153 | |
154 | memset (&start, 0, sizeof (start)); | |
155 | start.cb = sizeof (start); | |
3bb69bbd | 156 | start.dwFlags = STARTF_USESHOWWINDOW | STARTF_USECOUNTCHARS; |
c911543b | 157 | start.wShowWindow = SW_HIDE; |
3bb69bbd JR |
158 | /* Ensure that we don't waste memory if the user has specified a huge |
159 | default screen buffer for command windows. */ | |
160 | start.dwXCountChars = 80; | |
161 | start.dwYCountChars = 25; | |
c911543b GV |
162 | |
163 | sec_attrs.nLength = sizeof (sec_attrs); | |
164 | sec_attrs.lpSecurityDescriptor = NULL; | |
165 | sec_attrs.bInheritHandle = FALSE; | |
166 | ||
05c4be3c | 167 | if (CreateProcess (NULL, new_cmdline, &sec_attrs, NULL, TRUE, priority_class, |
1e3c9713 | 168 | NULL, NULL, &start, &child)) |
c911543b GV |
169 | { |
170 | if (wait_for_child) | |
171 | { | |
172 | WaitForSingleObject (child.hProcess, INFINITE); | |
173 | GetExitCodeProcess (child.hProcess, &ret_code); | |
174 | } | |
175 | CloseHandle (child.hThread); | |
176 | CloseHandle (child.hProcess); | |
177 | } | |
178 | else | |
179 | goto error; | |
180 | return (int) ret_code; | |
181 | ||
182 | error: | |
183 | MessageBox (NULL, "Could not start Emacs.", "Error", MB_ICONSTOP); | |
184 | return 1; | |
185 | } | |
ab5796a9 | 186 | |
7c3320d8 JB |
187 | void |
188 | set_user_model_id (void) | |
ff90fbde JR |
189 | { |
190 | HMODULE shell; | |
0a3472c7 | 191 | HRESULT (WINAPI * set_user_model) (wchar_t * id); |
ff90fbde JR |
192 | |
193 | /* On Windows 7 and later, we need to set the user model ID | |
194 | to associate emacsclient launched files with Emacs frames | |
195 | in the UI. */ | |
196 | shell = LoadLibrary ("shell32.dll"); | |
197 | if (shell) | |
198 | { | |
199 | set_user_model | |
200 | = (void *) GetProcAddress (shell, | |
201 | "SetCurrentProcessExplicitAppUserModelID"); | |
202 | ||
203 | /* If the function is defined, then we are running on Windows 7 | |
204 | or newer, and the UI uses this to group related windows | |
205 | together. Since emacs, runemacs, emacsclient are related, we | |
206 | want them grouped even though the executables are different, | |
207 | so we need to set a consistent ID between them. */ | |
208 | if (set_user_model) | |
209 | set_user_model (L"GNU.Emacs"); | |
210 | ||
211 | FreeLibrary (shell); | |
212 | } | |
213 | } | |
214 | ||
fc5f9b45 EZ |
215 | static int |
216 | ensure_unicows_dll (void) | |
217 | { | |
218 | OSVERSIONINFO os_ver; | |
219 | HMODULE h; | |
220 | ||
221 | ZeroMemory (&os_ver, sizeof (OSVERSIONINFO)); | |
222 | os_ver.dwOSVersionInfoSize = sizeof (OSVERSIONINFO); | |
223 | if (!GetVersionEx (&os_ver)) | |
224 | return 0; | |
225 | ||
226 | if (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) | |
227 | { | |
228 | h = LoadLibrary ("Unicows.dll"); | |
229 | if (!h) | |
230 | { | |
231 | int button; | |
232 | ||
233 | button = MessageBox (NULL, | |
234 | "Emacs cannot load the UNICOWS.DLL library.\n" | |
235 | "This library is essential for using Emacs\n" | |
236 | "on this system. You need to install it.\n\n" | |
fc5f9b45 EZ |
237 | "Emacs will exit when you click OK.", |
238 | "Emacs cannot load UNICOWS.DLL", | |
239 | MB_ICONERROR | MB_TASKMODAL | |
240 | | MB_SETFOREGROUND | MB_OK); | |
241 | switch (button) | |
242 | { | |
243 | case IDOK: | |
244 | default: | |
245 | return 0; | |
246 | } | |
247 | } | |
248 | FreeLibrary (h); | |
249 | return 1; | |
250 | } | |
251 | return 1; | |
252 | } |