# form_page 3x 2023-12-16 ncurses 6.4 Library calls

    form_page(3x)                    Library calls                   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 *form);

           int unfocus_current_field(FORM *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 unfocus_current_field removes the focus from  the  current
           field  of  the  form.  In such state, inquiries via current_field shall
           return a NULL pointer.

           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(3)).

## PORTABILITY

           These  routines  emulate  the  System  V  forms library.  They were not
           supported on Version 7 or BSD versions.

           The unfocus_current_field function is an ncurses extension.

## AUTHORS

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

## SEE ALSO

           curses(3x), form(3x)

    ncurses 6.4                       2023-12-16                     form_page(3x)