form_field_userptr(3X)                                  form_field_userptr(3X)

NAME
       set_field_userptr, field_userptr - associate application data with a
       form field

SYNOPSIS
       #include <form.h>

       int set_field_userptr(FIELD *field, void *userptr);
       void *field_userptr(const FIELD *field);

DESCRIPTION
       Every form field has a field that can be used to hold application-
       specific data (that is, the form-driver code leaves it alone).  These
       functions get and set that field.

RETURN VALUE
       The function field_userptr returns a pointer (which may be NULL).  It
       does not set errno.

       The function set_field_userptr returns E_OK (success).

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 user pointer is a void pointer.  We chose not to leave it as a char
       pointer for SVr4 compatibility.

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

                                                        form_field_userptr(3X)