diff --git a/freeglut/freeglut/src/mswin/fg_main_mswin.c b/freeglut/freeglut/src/mswin/fg_main_mswin.c
index fea1505..c72e467 100644
--- a/freeglut/freeglut/src/mswin/fg_main_mswin.c
+++ b/freeglut/freeglut/src/mswin/fg_main_mswin.c
@@ -497,9 +497,29 @@ LRESULT CALLBACK fgPlatformWindowProc( HWND hWnd, UINT uMsg, WPARAM wParam,
         lRet = DefWindowProc( hWnd, uMsg, wParam, lParam );
         INVOKE_WCB( *window, Entry, ( GLUT_LEFT ) );
 
+        /* If this is a menu that lost focus, see if user either switched
+           application or FreeGLUT window (if one is running multiple
+           windows). If so, close menu that lost focus.
+         */
         if( window->IsMenu &&
             window->ActiveMenu && window->ActiveMenu->IsActive )
-            fgUpdateMenuHighlight( window->ActiveMenu );
+        {
+            SFG_Window* wnd = NULL;
+            HWND hwnd = GetForegroundWindow();  /* Get window with current focus */
+            if (hwnd)
+                /* See if its one of our windows */
+                wnd = fgWindowByHandle(hwnd);
+
+            if (!hwnd || !wnd)
+                /* User switched to another application*/
+                fgDeactivateMenu(window->ActiveMenu->ParentWindow);
+            else if (
+                ( wnd->IsMenu && wnd->ActiveMenu->ParentWindow!=window->ActiveMenu->ParentWindow) ||    /* Make sure we don't kill the menu when trying to enter a submenu */
+                (!wnd->IsMenu && wnd!=window->ActiveMenu->ParentWindow)
+                )
+                /* User switched to another FreeGLUT window */
+                fgDeactivateMenu(window->ActiveMenu->ParentWindow);
+        }
 
         break;