diff -r -U3 qemu-snapshot-2005-05-06_23/cocoa.m qemu-snapshot-2005-05-06_23-on-quit-v0.2/cocoa.m
--- qemu-snapshot-2005-05-06_23/cocoa.m	Thu Apr  7 22:36:50 2005
+++ qemu-snapshot-2005-05-06_23-on-quit-v0.2/cocoa.m	Sat May  7 15:41:23 2005
@@ -444,7 +444,7 @@
 - (void)applicationWillTerminate:(NSNotification *)aNotification
 {
     printf("Application will terminate\n");
-    qemu_system_shutdown_request();
+    qemu_system_shutdown_request(1);
     /* In order to avoid a crash */
     exit(0);
 }
diff -r -U3 qemu-snapshot-2005-05-06_23/hw/cuda.c qemu-snapshot-2005-05-06_23-on-quit-v0.2/hw/cuda.c
--- qemu-snapshot-2005-05-06_23/hw/cuda.c	Sat Apr 23 20:16:54 2005
+++ qemu-snapshot-2005-05-06_23-on-quit-v0.2/hw/cuda.c	Sat May  7 15:41:06 2005
@@ -532,7 +532,7 @@
         obuf[0] = CUDA_PACKET;
         obuf[1] = 0;
         cuda_send_packet_to_host(s, obuf, 2);
-	qemu_system_shutdown_request();
+	qemu_system_shutdown_request(1);
 	break;
     default:
         break;
diff -r -U3 qemu-snapshot-2005-05-06_23/hw/pc.c qemu-snapshot-2005-05-06_23-on-quit-v0.2/hw/pc.c
--- qemu-snapshot-2005-05-06_23/hw/pc.c	Sat Jan 15 13:02:56 2005
+++ qemu-snapshot-2005-05-06_23-on-quit-v0.2/hw/pc.c	Sat May  7 16:20:42 2005
@@ -297,7 +297,7 @@
             shutdown_index++;
             if (shutdown_index == 8) {
                 shutdown_index = 0;
-                qemu_system_shutdown_request();
+                qemu_system_shutdown_request(-1);
             }
         } else {
             shutdown_index = 0;
diff -r -U3 qemu-snapshot-2005-05-06_23/sdl.c qemu-snapshot-2005-05-06_23-on-quit-v0.2/sdl.c
--- qemu-snapshot-2005-05-06_23/sdl.c	Mon Jan 17 23:32:23 2005
+++ qemu-snapshot-2005-05-06_23-on-quit-v0.2/sdl.c	Sat May  7 16:33:15 2005
@@ -414,7 +414,7 @@
                 sdl_process_key(&ev->key);
             break;
         case SDL_QUIT:
-            qemu_system_shutdown_request();
+	       qemu_system_shutdown_request(1);
             break;
         case SDL_MOUSEMOTION:
             if (gui_grab) {
diff -r -U3 qemu-snapshot-2005-05-06_23/vl.c qemu-snapshot-2005-05-06_23-on-quit-v0.2/vl.c
--- qemu-snapshot-2005-05-06_23/vl.c	Sat Apr 30 18:10:35 2005
+++ qemu-snapshot-2005-05-06_23-on-quit-v0.2/vl.c	Sat May  7 18:25:11 2005
@@ -144,6 +144,11 @@
 #endif
 int graphic_depth = 15;
 int full_screen = 0;
+
+#define ON_QUIT_ASK_FILENAME "on_quit_ask"
+int on_quit = 0;
+const char * on_quit_filepath = NULL;
+
 TextConsole *vga_console;
 CharDriverState *serial_hds[MAX_SERIAL_PORTS];
 CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
@@ -2581,9 +2586,27 @@
     cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
 }
 
-void qemu_system_shutdown_request(void)
+void qemu_system_shutdown_request(int s)
 {
-    shutdown_requested = 1;
+
+    if (s == 1 && on_quit == 3) { // User power-off request and Popup message setting
+        int r,c;
+       
+        if( on_quit_filepath ) r = system(on_quit_filepath);
+        else {
+            char buf[1024];
+            snprintf(buf, sizeof(buf), "%s/%s", CONFIG_QEMU_SHAREDIR, ON_QUIT_ASK_FILENAME);
+            r = system(buf);
+        }
+        c = WEXITSTATUS(r);
+      
+        if(c == 0) return;
+        if(c == 2) s = -1; // Simulate an APM power-off request
+        // else if r == -1, there was an error; if c == 1, then suspend;
+        // Either way, we suspend, for safety
+    }
+
+    shutdown_requested = s;
     cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
 }
 
@@ -2701,8 +2724,11 @@
         if (vm_running) {
             ret = cpu_exec(env);
             if (shutdown_requested) {
-                ret = EXCP_INTERRUPT; 
-                break;
+                if (on_quit == 0 || on_quit == 2 || on_quit == 3 || (on_quit == 1 && shutdown_requested == -1)) {
+                    ret = EXCP_INTERRUPT; 
+                    break;
+                }
+            shutdown_requested = 0;
             }
             if (reset_requested) {
                 reset_requested = 0;
@@ -2803,6 +2829,9 @@
            "-std-vga        simulate a standard VGA card with VESA Bochs Extensions\n"
            "                (default is CL-GD5446 PCI VGA)\n"
 #endif
+           "-on-quit        [ignore|suspend|ask|<script filepath>]\n"
+           "                select the behaviour when the emulator window is asked to quit\n"
+           "                (default is none)\n"
            "-loadvm file    start right away with a saved state (loadvm in monitor)\n"
            "\n"
            "During emulation, the following keys are useful:\n"
@@ -2885,6 +2914,8 @@
     QEMU_OPTION_pidfile,
     QEMU_OPTION_no_kqemu,
     QEMU_OPTION_win2k_hack,
+    QEMU_OPTION_on_quit,
+    
 };
 
 typedef struct QEMUOption {
@@ -2954,6 +2985,7 @@
     { "full-screen", 0, QEMU_OPTION_full_screen },
     { "pidfile", HAS_ARG, QEMU_OPTION_pidfile },
     { "win2k-hack", 0, QEMU_OPTION_win2k_hack },
+    { "on-quit", HAS_ARG, QEMU_OPTION_on_quit },
     
     /* temporary options */
     { "pci", 0, QEMU_OPTION_pci },
@@ -3415,6 +3447,18 @@
                 kqemu_allowed = 0;
                 break;
 #endif
+            case QEMU_OPTION_on_quit:
+                if(!strncmp(optarg, "ignore",6)) {
+                    on_quit = 1;
+                }
+                else if(!strncmp(optarg, "suspend",7)) {
+                    on_quit = 2;
+                }
+                else {
+                    on_quit = 3;
+                    if(strcmp(optarg, "ask")) on_quit_filepath = optarg;
+                }
+                break;
             }
         }
     }
@@ -3723,6 +3767,20 @@
         }
     }
     main_loop();
+
+    if (on_quit == 2 || on_quit == 3) {
+        char *f = "suspended.qemu";
+        if (shutdown_requested == -1) { // APM-request to shutdown
+
+        fprintf(stderr, "VM is halted: removing suspend file %s\n",f);
+        unlink(f);
+        }
+        else { // User-request to shutdown
+            fprintf(stderr, "Autosaving VM to file %s\n",f);
+            qemu_savevm(f);
+        }
+    }
+   
     quit_timers();
     return 0;
 }
diff -r -U3 qemu-snapshot-2005-05-06_23/vl.h qemu-snapshot-2005-05-06_23-on-quit-v0.2/vl.h
--- qemu-snapshot-2005-05-06_23/vl.h	Sat Apr 30 18:10:35 2005
+++ qemu-snapshot-2005-05-06_23-on-quit-v0.2/vl.h	Sat May  7 15:41:49 2005
@@ -109,7 +109,7 @@
 
 void qemu_register_reset(QEMUResetHandler *func, void *opaque);
 void qemu_system_reset_request(void);
-void qemu_system_shutdown_request(void);
+void qemu_system_shutdown_request(int);
 
 void main_loop_wait(int timeout);