How to get another application menu

Hi all MSDN menber

I have one problem. When I use GetMenu function of API to get the application menu from my program, I can get the menu from Application like WordPad, NotePad.
But If I try to get menu from my application Getmenu is return 0
(My Application create by C# and use MenuStrip)
Is there any other way to get the menu of my application?Thanks.