form_userptr(3x) — Linux manual page


form_userptr(3X)                                        form_userptr(3X)

NAME         top

       set_form_userptr, form_userptr - associate application data with
       a form item

SYNOPSIS         top

       #include <form.h>

       int set_form_userptr(FORM *form, void *userptr);
       void* form_userptr(const FORM *form);

DESCRIPTION         top

       Every form and every form item 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 the form user
       pointer field.

RETURN VALUE         top

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

       The function set_form_userptr returns E_OK (success).

SEE ALSO         top

       curses(3X), form(3X).

NOTES         top

       The header file <form.h> automatically includes the header file

PORTABILITY         top

       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         top

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

COLOPHON         top

       This page is part of the ncurses (new curses) project.
       Information about the project can be found at 
       ⟨⟩.  If you have
       a bug report for this manual page, send it to  This page was obtained from the
       project's upstream Git mirror of the CVS repository
       ⟨⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-03-12.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to