Adds a new menu item to the end of the menu
#include <GuiMenu.au3>
_GUICtrlMenu_AddMenuItem ( $hMenu, $sText [, $iCmdID = 0 [, $hSubMenu = 0]] )
| $hMenu | Handle of the menu | 
| $sText | Menu item text. If blank, a separator will be added. | 
| $iCmdID | [optional] Command ID to assign to the item | 
| $hSubMenu | [optional] Handle to the submenu associated with the menu item | 
| Success: | a 0-based menu item index. | 
| Failure: | -1. | 
#include <GUIConstantsEx.au3>
#include <GuiMenu.au3>
Example()
Func Example()
    Local $hGUI, $hFile, $hEdit, $hHelp, $hMain
    Local Enum $e_idNew = 1000, $e_idOpen, $e_idSave, $e_idExit, $e_idCut, $e_idCopy, $e_idPaste, $e_idAbout
    ; Create GUI
    $hGUI = GUICreate("Menu", 400, 300)
    ; Create File menu
    $hFile = _GUICtrlMenu_CreateMenu()
    _GUICtrlMenu_AddMenuItem($hFile, "&New", $e_idNew)
    _GUICtrlMenu_AddMenuItem($hFile, "&Open", $e_idOpen)
    _GUICtrlMenu_AddMenuItem($hFile, "&Save", $e_idSave)
    _GUICtrlMenu_AddMenuItem($hFile, "", 0)
    _GUICtrlMenu_AddMenuItem($hFile, "E&xit", $e_idExit)
    ; Create Edit menu
    $hEdit = _GUICtrlMenu_CreateMenu()
    _GUICtrlMenu_AddMenuItem($hEdit, "&Cut", $e_idCut)
    _GUICtrlMenu_AddMenuItem($hEdit, "C&opy", $e_idCopy)
    _GUICtrlMenu_AddMenuItem($hEdit, "&Paste", $e_idPaste)
    ; Create Help menu
    $hHelp = _GUICtrlMenu_CreateMenu()
    _GUICtrlMenu_AddMenuItem($hHelp, "&About", $e_idAbout)
    ; Create Main menu
    $hMain = _GUICtrlMenu_CreateMenu()
    _GUICtrlMenu_AddMenuItem($hMain, "&File", 0, $hFile)
    _GUICtrlMenu_AddMenuItem($hMain, "&Edit", 0, $hEdit)
    _GUICtrlMenu_AddMenuItem($hMain, "&Help", 0, $hHelp)
    ; Set window menu
    _GUICtrlMenu_SetMenu($hGUI, $hMain)
    GUISetState(@SW_SHOW)
    ; Loop until the user exits.
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE
EndFunc   ;==>Example