#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);
The function set_current_field sets the current field of the
given form; current_field returns the current field of the given
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.
Except for form_page, each routine returns 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
Contents of a field are not valid.
The form driver could not process the request.
System error occurred (see errno(3)).
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