mitem_current(3x) — Linux manual page


mitem_current(3X)                                      mitem_current(3X)

NAME         top

       mitem_current - set and get current_menu_item

SYNOPSIS         top

       #include <menu.h>

       int set_current_item(MENU *menu, 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         top

       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         top

       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.

            Routine detected an incorrect or out-of-range argument.

            Routine was called from an initialization or termination

            No items are connected to the menu.

            System error occurred (see errno(3)).

SEE ALSO         top

       curses(3X), menu(3X).

NOTES         top

       The header file <menu.h> automatically includes the header file

PORTABILITY         top

       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         top

       Juergen Pfeifer.  Manual pages and adaptation for new curses by
       Eric S. Raymond.

COLOPHON         top

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