#include <menu.h>
int set_current_item(MENU *menu, const ITEM *item);
ITEM *current_item(const MENU *menu);
int set_top_row(MENU *menu, int row);
int top_row(const MENU *menu);
int item_index(const ITEM *item);
DESCRIPTION
The function set_current_item sets the current item (the item on which
the menu cursor is positioned). current_item returns a pointer to the
current item in the given menu.
The function set_top_row sets the top row of the menu to show the given
row (the top row is initially 0, and is reset to this value whenever the
O_ROWMAJOR option is toggled). The item leftmost on the given row
becomes current. The function top_row returns the number of the top menu
row being displayed.
The function item_index returns the (zero-origin) index of item in
the menu's item pointer list.
RETURN VALUE
current_item returns a pointer (which may be NULL).
It does not set errno.
top_row and item_index return ERR (the general curses
error value) if their menu parameter is NULL.
set_current_item and set_top_row return one of the following:
E_OK
The routine succeeded.
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
E_BAD_STATE
Routine was called from an initialization or termination function.
