DOKK / manpages / debian 11 / ncurses-doc / free_form.3form.en
new(3FORM) new(3FORM)

new_form, free_form - create and destroy forms

#include <form.h>

FORM *new_form(FIELD **fields);
int free_form(FORM *form);

The function new_form creates a new form connected to a specified field pointer array (which must be NULL-terminated).

The function free_form disconnects form from its field array and frees the storage allocated for the form.

The function new_form returns NULL on error. It sets errno according to the function's success:

The routine succeeded.
Routine detected an incorrect or out-of-range argument.
The field is already connected to a form.
System error occurred, e.g., malloc failure.

The function free_form returns one of the following:

The routine succeeded.
Routine detected an incorrect or out-of-range argument.
The form has already been posted.

ncurses(3NCURSES), form(3FORM).

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.

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