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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 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  argu-
            ment.

       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 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.



                                                         form_field(3x)

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