Bug 83056 Add support for windows sounds to Menus r=enndeakin, sr=roc, ui=jboriss

layout/xul/base/src/nsMenuFrame.cpp

@@ -82,6 +82,7 @@
 #include "nsContentUtils.h"
 #include "nsDisplayList.h"
 #include "nsIReflowCallback.h"
+#include "nsISound.h"
 
 #define NS_MENU_POPUP_LIST_INDEX 0
 
@@ -1172,6 +1173,10 @@ nsMenuFrame::Execute(nsGUIEvent *aEvent)
     }
   }
 
+  nsCOMPtr<nsISound> sound(do_CreateInstance("@mozilla.org/sound;1"));
+  if (sound)
+    sound->PlaySystemSound(NS_SYSSOUND_MENU_EXECUTE);
+
   nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
   if (pm && mMenuParent)
     pm->ExecuteMenu(mContent, aEvent);