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mitem_current

Section: Miscellaneous Library Functions (3X)
Updated:
Index Return to Main Contents
 

NAME

mitem_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 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.
E_NOT_CONNECTED
No items are connected to the menu.
E_SYSTEM_ERROR
System error occurred (see errno).
 

SEE ALSO

curses(3X), menu(3X).  

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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
SEE ALSO
NOTES
PORTABILITY
AUTHORS


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