menu_current(3MENU) menu_current(3MENU)
NAME
menu_current - set and get current_menu_item
SYNOPSIS
#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 when-
ever 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.
E_NOT_CONNECTED
No items are connected to the menu.
E_SYSTEM_ERROR
System error occurred (see errno).
SEE ALSO
ncurses(3NCURSES), menu(3MENU).
NOTES
The header file <menu.h> automatically includes the header file <curses.h>.
PORTABILITY
These routines emulate the System V menu library. They were not supported on Version 7 or BSD versions.
The SVr4 menu library documentation specifies the top_row and index_item error value as -1 (which is the value of ERR).
AUTHORS
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S. Raymond.
menu_current(3MENU)
