Another update by Manolo.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6989 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/Fl_cocoa.mm

@@ -2899,15 +2899,22 @@ static void createAppleMenu(void)
     }
     else if ( item->flags & FL_MENU_RADIO ) {// update the menu radio symbols
       int from = flRank;
-      while(from > 0 && items[from - 1].flags & FL_MENU_RADIO) from--;
+      while( from > 0 && items[from - 1].label() && (items[from - 1].flags & FL_MENU_RADIO) &&
+            !(items[from - 1].flags & FL_MENU_DIVIDER) ) {
+        from--;
+      }
       int to = flRank;
-      while(items[to + 1].flags & FL_MENU_RADIO) to++;
+      while( !(items[to].flags & FL_MENU_DIVIDER) && items[to + 1].label() && 
+            (items[to + 1].flags & FL_MENU_RADIO) ) {
+        to++;
+      }
       NSMenu *nsmenu = [self menu];
       int nsrank = (int)[nsmenu indexOfItem:self];
       for(int i =  from - flRank + nsrank ; i <= to - flRank + nsrank; i++) {
-	[[nsmenu itemAtIndex:i] setState:NSOffState];
+        NSMenuItem *nsitem = [nsmenu itemAtIndex:i];
+        if(nsitem != self) [nsitem setState:NSOffState];
+        else [nsitem setState:(item->value() ? NSOnState : NSOffState) ];
       }
-      if(item->value()) [self setState:NSOnState];    
     }
   }
 }