form_userptr(3X) manual page
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form_userptr - associate application data
with a form item
#include <form.h>
int set_form_userptr(FORM *form, void *userptr);
void* form_userptr(const FORM *form);
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.
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).
curses(3X)
,
form(3X)
.
The header file <form.h> automatically includes the header file
<curses.h>.
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.
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric
S. Raymond.
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