xref: /freebsd/contrib/ncurses/man/menu_pattern.3x (revision 43a5ec4eb41567cc92586503212743d89686d78f)
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$Id: menu_pattern.3x,v 1.21 2020/10/18 00:41:14 tom Exp $
menu_pattern 3X ""
NAME
set_menu_pattern, menu_pattern - set and get a menu's pattern buffer
SYNOPSIS
#include <menu.h> int set_menu_pattern(MENU *menu, const char *pattern);

char *menu_pattern(const MENU *menu);

DESCRIPTION
Every menu has an associated pattern match buffer. As input events that are printable characters come in, they are appended to this match buffer and tested for a match, as described in menu_driver(3X).

The function set_menu_pattern sets the pattern buffer for the given menu and tries to find the first matching item. If it succeeds, that item becomes current; if not, the current item does not change.

The function menu_pattern returns the pattern buffer of the given menu.

RETURN VALUE
The function menu_pattern returns a pointer, which is NULL if the menu parameter is NULL. Otherwise, it is a pointer to a string which is empty if no pattern has been set. It does not set errno.

The function set_menu_pattern may return the following error codes:

5 E_OK The routine succeeded.

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

5 E_BAD_STATE Routine was called from an initialization or termination function.

5 E_NOT_CONNECTED No items are connected to menu.

5 E_NO_MATCH Character failed to match.

5 E_SYSTEM_ERROR System error occurred (see errno(3)).

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