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field(3form)


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
   disconnected) 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
   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).

SEE ALSO

   ncurses(3NCURSES), form(3FORM).

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.

   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.

                                                              field(3FORM)



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