form_field - Online Linux Manual PageSection : 3X
Updated :

NAMEform_field − make and break connections between fields and forms

SYNOPSIS#include <form.h> int set_form_fields(FORM *form, FIELD **fields);
FIELD **form_fields(const FORM *form);
int field_count(const FORM *form);
int move_field(FIELD *field, int frow, int fcol);

DESCRIPTIONThe function set_form_fields changes the field pointer array of the given form. The array must be terminated by a NULL. The function form_fields returns the field array of the given form. The function field_count returns the count of fields in form. The function move_field moves the given field (which must be disconnected) to a specified location on the screen.

RETURN VALUEThe function form_fields returns a pointer (which may be NULL). It does not set errno. The function field_count returns ERR if the form parameter is NULL. The functions set_form_fields and move_field return one of the following codes on error: E_OK  The routine succeeded. E_BAD_ARGUMENT  Routine detected an incorrect or out-of-range argument. E_CONNECTED  The field is already connected to a form. E_POSTED  The form is already posted. E_SYSTEM_ERROR  System error occurred (see errno(3)).

SEE ALSOcurses(3X), form(3X).

NOTESThe header file <form.h> automatically includes the header file <curses.h>.

PORTABILITYThese routines emulate the System V forms library. They were not supported on Version 7 or BSD versions. The SVr4 forms library documentation specifies the field_count error value as −1 (which is the value of ERR).

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