+/* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ 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.
use Emacs in windowing (GUI) mode, and will not want to have an extra
console window lying around. */
-#define WIN32
+/*
+ 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 ();
+
int WINAPI
WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow)
{
STARTUPINFO start;
SECURITY_ATTRIBUTES sec_attrs;
- SECURITY_DESCRIPTOR sec_desc;
PROCESS_INFORMATION child;
int wait_for_child = FALSE;
+ DWORD priority_class = NORMAL_PRIORITY_CLASS;
DWORD ret_code = 0;
- char * new_cmdline;
- char * p;
+ 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) + 1);
- strcpy (new_cmdline, modname);
- strcat (new_cmdline, "\\emacs.exe ");
+ 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);
- /* append original arguments if any; first look for -wait as first
- argument, and apply that ourselves */
- if (strncmp (cmdline, "-wait", 5) == 0)
+#ifdef CHOOSE_NEWEST_EXE
{
- wait_for_child = TRUE;
- cmdline += 5;
+ /* 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" */
+ /* Set emacs_dir variable if runemacs was in "%emacs_dir%\bin". */
if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0)
- {
- *p = 0;
- SetEnvironmentVariable ("emacs_dir", modname);
- }
+ {
+ *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;
+ 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, 0,
+ if (CreateProcess (NULL, new_cmdline, &sec_attrs, NULL, TRUE, priority_class,
NULL, NULL, &start, &child))
{
if (wait_for_child)
MessageBox (NULL, "Could not start Emacs.", "Error", MB_ICONSTOP);
return 1;
}
+
+void set_user_model_id ()
+{
+ 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);
+ }
+}
+
+/* arch-tag: 7e02df73-4df7-4aa0-baea-99c6d047a384
+ (do not change this comment) */