InitMenus
InitMenus Initialize the Menu Manager
#include <Menus.h> Menu Manager
void InitMenus( );
This allocates heap storage for the menu list and draws an empty menu bar.
Call this once, early in the program, before making any other Menu Manager
calls.
Returns: none

Notes: Call InitGraf, InitFonts, and InitWindows before calling InitMenus
or using any Menu Manager functions.
After this call, you can prepare your menus using any of the following
techniques:
Use GetNewMBar to read an entire menu list (all menus with their
items) into memory from a resource. Use SetMenuBar to install it.
Use GetMenu to read menus, one at a time, into memory from a resource.
Use InsertMenu to install each of them.
Use NewMenu to create empty menus. Fill them with items using
AppendMenu and use InsertMenu to install them.
Use NewMenu to create an empty menu. Fill it with items using
AddResMenu (to get a list of all resources of a selected type; e.g. fonts),
and use InsertMenu to install the menu.
When a mouse-down event occurs, use FindWindow; if the return value
is inMenuBar, call MenuSelect to pull down the menu and let the user
choose an item. The return value indicates which item was chosen. When a
key-down event indicates a command key, use MenuKey to see which menu
item was desired.