i'm not sure where you are or what you've tried so far, but
here's a quick summary of what you need to do to update the menu bar.
define the AP_MENU_ID_{...} ids in abi/src/wp/ap/xp/ap_Menu_Id.h
(this defines the symbols)
add the necessary lines in ap_Menu_Layouts_MainMenu.h
(this adds them to the menu layout)
add bindings for the ids in ap_Menu_ActionSet.cpp
(this maps an id to an EditMethods, a state callback, status
bar text, and contains some property bits to describe how
the item should be drawn)
create the necessary EV_GetMenuItemState_Fn's in ap_Menu_Functions.{h,cpp}
(these functions are used to dynamically compute the decoration/state of
the menu item (for example on win32, in response to the WM_INITMENU msg))
create the necessary EditMethods in ap_EditMethods.cpp
(these are called (by name) in response to the actual menu item selection)
i know that this sounds complicated, but the result will automagically
work on all 3 platforms.... :-)
hope this helps
jeff
ps. perhaps we should add this text to the FAQ...