form_userptr

Section: Miscellaneous Library Functions (3X)
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NAME

form_userptr - associate application data with a form item

SYNOPSIS

#include <form.h>
int set_form_userptr(FORM *form, void *userptr);
void* form_userptr(const FORM *form);

DESCRIPTION

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 NULL on error. The function set_form_userptr returns one of the following:

E_OK: The routine succeeded.
E_SYSTEM_ERROR: System error occurred (see errno).

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 should be a void pointer. We leave it as a char pointer for SVr4 compatibility.

AUTHORS

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

This document was created by man2html, using the manual pages.
Time: 23:13:54 GMT, April 25, 2024