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form_field 3x

form_field(3x)                                                  form_field(3x)




NAME

       form_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);


DESCRIPTION

       The  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  discon-
       nected) to a specified location on the screen.


RETURN VALUE

       The  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  follow-
       ing 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).


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  sup-
       ported 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).


AUTHORS

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



                                                                form_field(3x)