centos man page for field_index

form_page(3X)															     form_page(3X)

NAME
       form_page - set and get form page number

SYNOPSIS
       #include <form.h>
       int set_current_field(FORM *form, FIELD *field);
       FIELD *current_field(const FORM *);
       int set_form_page(FORM *form, int n);
       int form_page(const FORM *form);
       int field_index(const FIELD *field);

DESCRIPTION
       The function set_current field sets the current field of the given form; current_field returns the current field of the given form.

       The function set_form_page sets the form's page number (goes to page n of the form).

       The function form_page returns the form's current page number.

       The  function  field_index returns the index of the field in the field array of the form it is connected to. It returns ERR if the argument
       is the null pointer or the field is not connected.

RETURN VALUE
       Except for form_page, each routine returns 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_INVALID_FIELD
	    Contents of a field are not valid.

       E_REQUEST_DENIED
	    The form driver could not process the request.

       E_SYSTEM_ERROR
	    System error occurred (see errno).

SEE ALSO
       curses(3X), form(3X).

NOTES
       The header file <form.h> automatically includes the header file <curses.h>.

PORTABILITY
       These routines emulate the System V forms 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.

																     form_page(3X)