Mac OS X: Also add "Start new instance" to popup menu on app icon

src/gui/menu_macos.mm

@@ -196,6 +196,14 @@ void menu_macosx_set_menuobj(DOSBoxMenu *new_altMenu) {
     }
 }
 
+- (void)DOSBoxXMenuActionNewInstance:(id)sender
+{
+    (void)sender;
+    if (is_paused || MAPPER_IsRunning() || GUI_IsRunning()) return;
+    void NewInstanceEvent(bool pressed);
+    NewInstanceEvent(true);
+}
+
 - (void)DOSBoxXMenuActionMapper:(id)sender
 {
     (void)sender;
@@ -469,6 +477,30 @@ void macosx_init_dock_menu(void) {
         [item release];
     }
 
+    {
+        bool enable = false;
+        extern std::string MacOSXEXEPath;
+        if (!MacOSXEXEPath.empty()) {
+            if (MacOSXEXEPath.at(0) == '/') {
+                enable = true;
+            }
+        }
+
+        if (enable) {
+            {
+                NSMenuItem *item = [NSMenuItem separatorItem];
+                [menu addItem:item];
+                [item release];
+            }
+
+            NSString *title = [[NSString alloc] initWithUTF8String: "Start new instance"];
+            NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:title action:@selector(DOSBoxXMenuActionNewInstance:) keyEquivalent:@""];
+            [menu addItem:item];
+            [title release];
+            [item release];
+        }
+    }
+
     sdl1_hax_set_dock_menu(menu);
 
     [menu release];

src/gui/sdlmain.cpp

@@ -1637,7 +1637,7 @@ bool CheckQuit(void) {
     return true;
 }
 
-static void NewInstanceEvent(bool pressed) {
+void NewInstanceEvent(bool pressed) {
     if (!pressed) return;
 #if defined(MACOSX)
     pid_t p = fork();