Adding menu entries to Blackberry menu list

Blackberry applications have开发者_运维百科 a "menu" list coming up when you hit the Blackberry menu button. (When you inherit from "MainScreen".) But in my application there is only one entry, "Close".

How do I add entries to this menu?

^{(This is not a dupe of this question, which is about replacing the standard menu with an entirely custom menu.)}

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create a menu item using the net.rim.device.api.ui.MenuItem. You can add it to a MainScreen with the addMenuItem(MenuItem item) function.

EDIT

sample code

MenuItem mi=new MenuItem("mymenuitem",1,1);
addMenuItem(mi);