Provided by: ncurses-doc_6.1+20190803-1ubuntu1_all
set_form_opts, form_opts_on, form_opts_off, form_opts - set and get form options
#include <form.h> int set_form_opts(FORM *form, Field_Options opts); int form_opts_on(FORM *form, Field_Options opts); int form_opts_off(FORM *form, Field_Options opts); Field_Options form_opts(const FORM *form);
The function set_form_opts sets all the given form's option bits (form option bits may be logically-OR'ed together). The function form_opts_on turns on the given option bits, and leaves others alone. The function form_opts_off turns off the given option bits, and leaves others alone. The function form_opts returns the form's current option bits. The following options are defined (all are on by default): O_NL_OVERLOAD Overload the REQ_NEW_LINE forms driver request so that calling it at the end of a field goes to the next field. O_BS_OVERLOAD Overload the REQ_DEL_PREV forms driver request so that calling it at the beginning of a field goes to the previous field.
Except for form_opts, each routine returns one of the following: E_OK The routine succeeded. E_SYSTEM_ERROR System error occurred (see errno(3)).
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. opts(3FORM)