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OpenDarwin 7.2.1 - man page for form_userptr (opendarwin section 3x)

form_userptr(3X)										     form_userptr(3X)

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).
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 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. form_userptr(3X)


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