menu_item_current(3X) DG/UX R4.11MU05 menu_item_current(3X)
NAME
menu_item_current: set_current_item, current_item, set_top_row,
top_row, item_index - set and get current menus items
SYNOPSIS
#include <menu.h>
int set_current_item(MENU *menu, ITEM *item);
ITEM *current_item(MENU *menu);
int set_top_row(MENU *menu, int row);
int top_row(MENU *menu);
int item_index(ITEM *item);
DESCRIPTION
The current item of a menu is the item where the cursor is currently
positioned. set_current_item sets the current item of menu to item.
current_item returns a pointer to the the current item in menu.
set_top_row sets the top row of menu to row. The left-most item on
the new top row becomes the current item. top_row returns the number
of the menu row currently displayed at the top of menu.
item_index returns the index to the item in the item pointer array.
The value of this index ranges from 0 through N-1, where N is the
total number of items connected to the menu.
RETURN VALUE
current_item returns NULL on error.
top_row and index_item return -1 on error.
set_current_item and set_top_row return one of the following:
E_OK - The routine returned successfully.
E_SYSTEM_ERROR - System error.
E_BAD_ARGUMENT - An incorrect argument was passed to the routine.
E_BAD_STATE - The routine was called from an initialization or
termination function.
E_NOT_CONNECTED - No items are connected to the menu.
NOTES
The header file <menu.h> automatically includes the header files
<eti.h> and <curses.h>.
SEE ALSO
curses(3X), menus(3X).
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