Document complete-symbol change.

[bpt/emacs.git] / nt / runemacs.c

diff --git a/nt/runemacs.c b/nt/runemacs.c
index 440fd8d..4a3d4a9 100644 (file)
--- a/nt/runemacs.c
+++ b/nt/runemacs.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+/* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
      Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
@@ -43,6 +43,8 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <string.h>
 #include <malloc.h>
 
+static void set_user_model_id ();
+
 int WINAPI
 WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow)
 {
@@ -56,6 +58,8 @@ WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow)
   char *p;
   char modname[MAX_PATH];
 
+  set_user_model_id ();
+
   if (!GetModuleFileName (NULL, modname, MAX_PATH))
     goto error;
   if ((p = strrchr (modname, '\\')) == NULL)
@@ -170,5 +174,32 @@ error:
   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) */