Section: Miscellaneous Library Functions (3X)
- associate application data with a form field
int set_field_userptr(FIELD *field, void*userptr);
void *field_userptr(const FIELD *field);
Every form field 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 function field_userptr
returns a pointer (which may be NULL
It does not set errno.
The function set_field_userptr returns E_OK (success).
The header file <form.h>
automatically includes the header file
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.
Manual pages and adaptation for new curses by Eric S. Raymond.