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diff --git a/src/eggsmclient-win32.c b/src/eggsmclient-win32.c
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+++ b/src/eggsmclient-win32.c
@@ -0,0 +1,353 @@
+/*
+ * Copyright (C) 2007 Novell, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/* EggSMClientWin32
+ *
+ * For details on the Windows XP logout process, see:
+ * http://msdn.microsoft.com/en-us/library/aa376876.aspx.
+ *
+ * Vista adds some new APIs which EggSMClient does not make use of; see
+ * http://msdn.microsoft.com/en-us/library/ms700677(VS.85).aspx
+ *
+ * When shutting down, Windows sends every top-level window a
+ * WM_QUERYENDSESSION event, which the application must respond to
+ * synchronously, saying whether or not it will quit. To avoid main
+ * loop re-entrancy problems (and to avoid having to muck about too
+ * much with the guts of the gdk-win32 main loop), we watch for this
+ * event in a separate thread, which then signals the main thread and
+ * waits for the main thread to handle the event. Since we don't want
+ * to require g_thread_init() to be called, we do this all using
+ * Windows-specific thread methods.
+ *
+ * After the application handles the WM_QUERYENDSESSION event,
+ * Windows then sends it a WM_ENDSESSION event with a TRUE or FALSE
+ * parameter indicating whether the session is or is not actually
+ * going to end now. We handle this from the other thread as well.
+ *
+ * As mentioned above, Vista introduces several additional new APIs
+ * that don't fit into the (current) EggSMClient API. Windows also has
+ * an entirely separate shutdown-notification scheme for non-GUI apps,
+ * which we also don't handle here.
+ */
+
+#include "config.h"
+
+#include "eggsmclient-private.h"
+#include <gdk/gdk.h>
+
+#define WIN32_LEAN_AND_MEAN
+#define UNICODE
+#include <windows.h>
+#include <process.h>
+
+#define EGG_TYPE_SM_CLIENT_WIN32            (egg_sm_client_win32_get_type ())
+#define EGG_SM_CLIENT_WIN32(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), EGG_TYPE_SM_CLIENT_WIN32, EggSMClientWin32))
+#define EGG_SM_CLIENT_WIN32_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EGG_TYPE_SM_CLIENT_WIN32, EggSMClientWin32Class))
+#define EGG_IS_SM_CLIENT_WIN32(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EGG_TYPE_SM_CLIENT_WIN32))
+#define EGG_IS_SM_CLIENT_WIN32_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EGG_TYPE_SM_CLIENT_WIN32))
+#define EGG_SM_CLIENT_WIN32_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EGG_TYPE_SM_CLIENT_WIN32, EggSMClientWin32Class))
+
+typedef struct _EggSMClientWin32        EggSMClientWin32;
+typedef struct _EggSMClientWin32Class   EggSMClientWin32Class;
+
+struct _EggSMClientWin32 {
+  EggSMClient parent;
+
+  HANDLE message_event, response_event;
+
+  volatile GSourceFunc event;
+  volatile gboolean will_quit;
+};
+
+struct _EggSMClientWin32Class
+{
+  EggSMClientClass parent_class;
+
+};
+
+static void     sm_client_win32_startup (EggSMClient *client,
+					 const char  *client_id);
+static void     sm_client_win32_will_quit (EggSMClient *client,
+					   gboolean     will_quit);
+static gboolean sm_client_win32_end_session (EggSMClient         *client,
+					     EggSMClientEndStyle  style,
+					     gboolean  request_confirmation);
+
+static GSource *g_win32_handle_source_add (HANDLE handle, GSourceFunc callback,
+					gpointer user_data);
+static gboolean got_message (gpointer user_data);
+static void sm_client_thread (gpointer data);
+
+G_DEFINE_TYPE (EggSMClientWin32, egg_sm_client_win32, EGG_TYPE_SM_CLIENT)
+
+static void
+egg_sm_client_win32_init (EggSMClientWin32 *win32)
+{
+  ;
+}
+
+static void
+egg_sm_client_win32_class_init (EggSMClientWin32Class *klass)
+{
+  EggSMClientClass *sm_client_class = EGG_SM_CLIENT_CLASS (klass);
+
+  sm_client_class->startup             = sm_client_win32_startup;
+  sm_client_class->will_quit           = sm_client_win32_will_quit;
+  sm_client_class->end_session         = sm_client_win32_end_session;
+}
+
+EggSMClient *
+egg_sm_client_win32_new (void)
+{
+  return g_object_new (EGG_TYPE_SM_CLIENT_WIN32, NULL);
+}
+
+static void
+sm_client_win32_startup (EggSMClient *client,
+			 const char  *client_id)
+{
+  EggSMClientWin32 *win32 = (EggSMClientWin32 *)client;
+
+  win32->message_event = CreateEvent (NULL, FALSE, FALSE, NULL);
+  win32->response_event = CreateEvent (NULL, FALSE, FALSE, NULL);
+  g_win32_handle_source_add (win32->message_event, got_message, win32);  
+  _beginthread (sm_client_thread, 0, client);
+}
+
+static void
+sm_client_win32_will_quit (EggSMClient *client,
+			   gboolean     will_quit)
+{
+  EggSMClientWin32 *win32 = (EggSMClientWin32 *)client;
+
+  win32->will_quit = will_quit;
+  SetEvent (win32->response_event);
+}
+
+static gboolean
+sm_client_win32_end_session (EggSMClient         *client,
+			     EggSMClientEndStyle  style,
+			     gboolean             request_confirmation)
+{
+  UINT uFlags = EWX_LOGOFF;
+
+  switch (style)
+    {
+    case EGG_SM_CLIENT_END_SESSION_DEFAULT:
+    case EGG_SM_CLIENT_LOGOUT:
+      uFlags = EWX_LOGOFF;
+      break;
+    case EGG_SM_CLIENT_REBOOT:
+      uFlags = EWX_REBOOT;
+      break;
+    case EGG_SM_CLIENT_SHUTDOWN:
+      uFlags = EWX_POWEROFF;
+      break;
+    }
+
+  /* There's no way to make ExitWindowsEx() show a logout dialog, so
+   * we ignore @request_confirmation.
+   */
+
+#ifdef SHTDN_REASON_FLAG_PLANNED
+  ExitWindowsEx (uFlags, SHTDN_REASON_FLAG_PLANNED);
+#else
+  ExitWindowsEx (uFlags, 0);
+#endif
+
+  return TRUE;
+}
+
+
+/* callbacks from logout-listener thread */
+
+static gboolean
+emit_quit_requested (gpointer smclient)
+{
+  gdk_threads_enter ();
+  egg_sm_client_quit_requested (smclient);
+  gdk_threads_leave ();
+
+  return FALSE;
+}
+
+static gboolean
+emit_quit (gpointer smclient)
+{
+  EggSMClientWin32 *win32 = smclient;
+
+  gdk_threads_enter ();
+  egg_sm_client_quit (smclient);
+  gdk_threads_leave ();
+
+  SetEvent (win32->response_event);
+  return FALSE;
+}
+
+static gboolean
+emit_quit_cancelled (gpointer smclient)
+{
+  EggSMClientWin32 *win32 = smclient;
+
+  gdk_threads_enter ();
+  egg_sm_client_quit_cancelled (smclient);
+  gdk_threads_leave ();
+
+  SetEvent (win32->response_event);
+  return FALSE;
+}
+
+static gboolean
+got_message (gpointer smclient)
+{
+  EggSMClientWin32 *win32 = smclient;
+
+  win32->event (win32);
+  return TRUE;
+}
+
+/* Windows HANDLE GSource */
+
+typedef struct {
+  GSource source;
+  GPollFD pollfd;
+} GWin32HandleSource;
+
+static gboolean
+g_win32_handle_source_prepare (GSource *source, gint *timeout)
+{
+  *timeout = -1;
+  return FALSE;
+}
+
+static gboolean
+g_win32_handle_source_check (GSource *source)
+{
+  GWin32HandleSource *hsource = (GWin32HandleSource *)source;
+
+  return hsource->pollfd.revents;
+}
+
+static gboolean
+g_win32_handle_source_dispatch (GSource *source, GSourceFunc callback, gpointer user_data)
+{
+  return (*callback) (user_data);
+}
+
+static void
+g_win32_handle_source_finalize (GSource *source)
+{
+  ;
+}
+
+GSourceFuncs g_win32_handle_source_funcs = {
+  g_win32_handle_source_prepare,
+  g_win32_handle_source_check,
+  g_win32_handle_source_dispatch,
+  g_win32_handle_source_finalize
+};
+
+static GSource *
+g_win32_handle_source_add (HANDLE handle, GSourceFunc callback, gpointer user_data)
+{
+  GWin32HandleSource *hsource;
+  GSource *source;
+
+  source = g_source_new (&g_win32_handle_source_funcs, sizeof (GWin32HandleSource));
+  hsource = (GWin32HandleSource *)source;
+  hsource->pollfd.fd = (int)handle;
+  hsource->pollfd.events = G_IO_IN;
+  hsource->pollfd.revents = 0;
+  g_source_add_poll (source, &hsource->pollfd);
+
+  g_source_set_callback (source, callback, user_data, NULL);
+  g_source_attach (source, NULL);
+  return source;
+}
+
+/* logout-listener thread */
+
+LRESULT CALLBACK
+sm_client_win32_window_procedure (HWND   hwnd,
+				  UINT   message,
+				  WPARAM wParam,
+				  LPARAM lParam)
+{
+  EggSMClientWin32 *win32 =
+    (EggSMClientWin32 *)GetWindowLongPtr (hwnd, GWLP_USERDATA);
+
+  switch (message)
+    {
+    case WM_QUERYENDSESSION:
+      win32->event = emit_quit_requested;
+      SetEvent (win32->message_event);
+
+      WaitForSingleObject (win32->response_event, INFINITE);
+      return win32->will_quit;
+
+    case WM_ENDSESSION:
+      if (wParam)
+	{
+	  /* The session is ending */
+	  win32->event = emit_quit;
+	}
+      else
+	{
+	  /* Nope, the session *isn't* ending */
+	  win32->event = emit_quit_cancelled;
+	}
+
+      SetEvent (win32->message_event);
+      WaitForSingleObject (win32->response_event, INFINITE);
+
+      return 0;
+
+    default:
+      return DefWindowProc (hwnd, message, wParam, lParam);
+    }
+}
+
+static void
+sm_client_thread (gpointer smclient)
+{
+  HINSTANCE instance;
+  WNDCLASSEXW wcl; 
+  ATOM klass;
+  HWND window;
+  MSG msg;
+
+  instance = GetModuleHandle (NULL);
+
+  memset (&wcl, 0, sizeof (WNDCLASSEX));
+  wcl.cbSize = sizeof (WNDCLASSEX);
+  wcl.lpfnWndProc = sm_client_win32_window_procedure;
+  wcl.hInstance = instance;
+  wcl.lpszClassName = L"EggSmClientWindow";
+  klass = RegisterClassEx (&wcl);
+
+  window = CreateWindowEx (0, MAKEINTRESOURCE (klass),
+			   L"EggSmClientWindow", 0,
+			   10, 10, 50, 50, GetDesktopWindow (),
+			   NULL, instance, NULL);
+  SetWindowLongPtr (window, GWLP_USERDATA, (LONG_PTR)smclient);
+
+  /* main loop */
+  while (GetMessage (&msg, NULL, 0, 0))
+    DispatchMessage (&msg);
+}