int set_form_userptr(FORM *form, const void *userptr);
const 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 formdriver code leaves it alone). These functions get and set the form user pointer field.
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 should be a void pointer. We 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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