Brew MP 1.0.2
This function returns the index of the menu item stored in the menu model
that matches a given menu command ID. Each item stored in the menu model is
associated with a specific command ID that an attached object could use as a
trigger in response to a user action -- for example, when the user selects a
particular menu item, that command ID could be generated.
IMenuModel_GetItemIndex() provides a mechanism for translating a command ID
back into an index, so the application could (for example) dip back into the
menu model to retrieve the menu item represented by that command ID.
int IMenuModel_GetItemIndex(IMenuModel *pif, uint16 idCmd);
This function returns the zero-based index of the menu item with command ID
'idCmd', or -1 if the menu model does not contain an item matching this ID.