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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/* Copyright (C) 2001-2011
Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/*
Simple program to start Emacs with its console window hidden.
This program is provided purely for convenience, since most users will
use Emacs in windowing (GUI) mode, and will not want to have an extra
console window lying around. */
/*
You may want to define this if you want to be able to install updated
emacs binaries even when other users are using the current version.
The problem with some file servers (notably Novell) is that an open
file cannot be overwritten, deleted, or even renamed. So if someone
is running emacs.exe already, you cannot install a newer version.
By defining CHOOSE_NEWEST_EXE, you can name your new emacs.exe
something else which matches "emacs*.exe", and runemacs will
automatically select the newest emacs executable in the bin directory.
(So you'll probably be able to delete the old version some hours/days
later).
*/
/* #define CHOOSE_NEWEST_EXE */
#include <windows.h>
#include <string.h>
#include <malloc.h>
static void set_user_model_id (void);
int WINAPI
WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow)
{
STARTUPINFO start;
SECURITY_ATTRIBUTES sec_attrs;
PROCESS_INFORMATION child;
int wait_for_child = FALSE;
DWORD priority_class = NORMAL_PRIORITY_CLASS;
DWORD ret_code = 0;
char *new_cmdline;
char *p;
char modname[MAX_PATH];
set_user_model_id ();
if (!GetModuleFileName (NULL, modname, MAX_PATH))
goto error;
if ((p = strrchr (modname, '\\')) == NULL)
goto error;
*p = 0;
new_cmdline = alloca (MAX_PATH + strlen (cmdline) + 3);
/* Quote executable name in case of spaces in the path. */
*new_cmdline = '"';
strcpy (new_cmdline + 1, modname);
#ifdef CHOOSE_NEWEST_EXE
{
/* Silly hack to allow new versions to be installed on
server even when current version is in use. */
char * best_name = alloca (MAX_PATH + 1);
FILETIME best_time = {0,0};
WIN32_FIND_DATA wfd;
HANDLE fh;
p = new_cmdline + strlen (new_cmdline);
strcpy (p, "\\emacs*.exe\" ");
fh = FindFirstFile (new_cmdline, &wfd);
if (fh == INVALID_HANDLE_VALUE)
goto error;
do
{
if (wfd.ftLastWriteTime.dwHighDateTime > best_time.dwHighDateTime
|| (wfd.ftLastWriteTime.dwHighDateTime == best_time.dwHighDateTime
&& wfd.ftLastWriteTime.dwLowDateTime > best_time.dwLowDateTime))
{
best_time = wfd.ftLastWriteTime;
strcpy (best_name, wfd.cFileName);
}
}
while (FindNextFile (fh, &wfd));
FindClose (fh);
*p++ = '\\';
strcpy (p, best_name);
strcat (p, " ");
}
#else
strcat (new_cmdline, "\\emacs.exe\" ");
#endif
/* Append original arguments if any; first look for arguments we
recognise (-wait, -high, and -low), and apply them ourselves. */
while (cmdline[0] == '-' || cmdline[0] == '/')
{
if (strncmp (cmdline+1, "wait", 4) == 0)
{
wait_for_child = TRUE;
cmdline += 5;
}
else if (strncmp (cmdline+1, "high", 4) == 0)
{
priority_class = HIGH_PRIORITY_CLASS;
cmdline += 5;
}
else if (strncmp (cmdline+1, "low", 3) == 0)
{
priority_class = IDLE_PRIORITY_CLASS;
cmdline += 4;
}
else
break;
/* Look for next argument. */
while (*++cmdline == ' ');
}
strcat (new_cmdline, cmdline);
/* Set emacs_dir variable if runemacs was in "%emacs_dir%\bin". */
if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0)
{
*p = 0;
for (p = modname; *p; p++)
if (*p == '\\') *p = '/';
SetEnvironmentVariable ("emacs_dir", modname);
}
memset (&start, 0, sizeof (start));
start.cb = sizeof (start);
start.dwFlags = STARTF_USESHOWWINDOW | STARTF_USECOUNTCHARS;
start.wShowWindow = SW_HIDE;
/* Ensure that we don't waste memory if the user has specified a huge
default screen buffer for command windows. */
start.dwXCountChars = 80;
start.dwYCountChars = 25;
sec_attrs.nLength = sizeof (sec_attrs);
sec_attrs.lpSecurityDescriptor = NULL;
sec_attrs.bInheritHandle = FALSE;
if (CreateProcess (NULL, new_cmdline, &sec_attrs, NULL, TRUE, priority_class,
NULL, NULL, &start, &child))
{
if (wait_for_child)
{
WaitForSingleObject (child.hProcess, INFINITE);
GetExitCodeProcess (child.hProcess, &ret_code);
}
CloseHandle (child.hThread);
CloseHandle (child.hProcess);
}
else
goto error;
return (int) ret_code;
error:
MessageBox (NULL, "Could not start Emacs.", "Error", MB_ICONSTOP);
return 1;
}
void
set_user_model_id (void)
{
HMODULE shell;
HRESULT (WINAPI * set_user_model) (wchar_t * id);
/* On Windows 7 and later, we need to set the user model ID
to associate emacsclient launched files with Emacs frames
in the UI. */
shell = LoadLibrary ("shell32.dll");
if (shell)
{
set_user_model
= (void *) GetProcAddress (shell,
"SetCurrentProcessExplicitAppUserModelID");
/* If the function is defined, then we are running on Windows 7
or newer, and the UI uses this to group related windows
together. Since emacs, runemacs, emacsclient are related, we
want them grouped even though the executables are different,
so we need to set a consistent ID between them. */
if (set_user_model)
set_user_model (L"GNU.Emacs");
FreeLibrary (shell);
}
}
|
