userptr3form
Associate application data with a form item
Usage
#include <form.h>
int set_form_userptr(FORM *form, void *userptr); void* form_userptr(const FORM *form);
Overview
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
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).
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.
Releases
18 releases since Debian 1.1 (Buzz); the text changed 13 times.