form_field_buffer - field buffer control

SYNOPSIS

       #include <form.h>
       int  set_field_buffer(FIELD  *field,  int  buf, const char
       *value);
       char *field_buffer(const FIELD *field, int buffer);
       int set_field_status(FIELD *field, bool status);
       bool field_status(const FIELD *field);
       int set_max_field(FIELD *field, int max);

DESCRIPTION

       The function set_field_buffer sets the numbered buffer  of
       the  given  field  to contain a given string.  Buffer 0 is
       the displayed value of the field; other  numbered  buffers
       may be allocated by applications through the nbuf argument
       of (see form_field_new(3X)) but are not manipulated by the
       forms  library.   The  function  field_buffer  returns the
       foreground attribute.

       The function set_field_status sets the  associated  status
       flag  of  field; field_status gets the current value.  The
       status flag is set to a nonzero value whenever  the  field
       changes.

       The  function  set_max_field  sets  the maximum size for a
       dynamic field.  An argument of 0  turns  off  any  maximum
       size threshold for that field.

RETURN VALUE

       The field_buffer function returns NULL on error.

       The field_status function returns TRUE or FALSE.

       The remaining routines return one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
            System error occurred (see errno).

       E_BAD_ARGUMENT
            Routine  detected  an incorrect or out-of-range argu-
            ment.

SEE ALSO

       curses(3X) and 3X pages  whose  names  begin  "form_"  for
       detailed descriptions of the entry points.

NOTES

       The header file <form.h> automatically includes the header
       file <curses.h>.
       These routines emulate the System V forms  library.   They
       were not supported on Version 7 or BSD versions.

AUTHORS

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