forms - curses extension for programming forms
#include <form.h>
The forms library provides terminal-independent facilities for composing form screens on character-cell terminals. The library includes: field routines, which create and modify form fields; and form routines, which group fields into forms, display forms on the screen, and handle interaction with the user.
The forms library uses the curses libraries, and a curses initialization routine such as initscr(3) must be called before using any of these functions. To use the forms library, link with the options -lform -lcurses.
The forms library maintains a default value for field attributes. You can get or set this default by calling the appropriate get_ or set_ routine with a NULL field pointer. Changing this default with a set_ function affects future field creations, but does not change the rendering of fields already created.
The following table lists each form routine and the name of the manual page on which it is described.
| curses Routine Name | Manual Page Name |
|---|---|
| current_field() | form_page |
| data_ahead() | form_data |
| data_behind() | form_data |
| dup_field() | form_field_new |
| dynamic_fieldinfo() | form_field_info |
| field_arg() | form_field_validation |
| field_back() | form_field_attributes |
| field_buffer() | form_field_buffer |
| field_count() | form_field |
| field_fore() | form_field_attributes |
| field_index() | form_page |
| field_info() | form_field_info |
| field_init() | form_hook |
| field_just() | form_field_just |
| field_opts() | form_field_opts |
| field_opts_off() | form_field_opts |
| field_opts_on() | form_field_opts |
| field_pad() | form_field_attributes |
| field_status() | form_field_buffer |
| field_term() | form_hook |
| field_type() | form_field_validation |
| field_userptr() | form_field_userptr |
| form_driver() | form_driver |
| form_fields() | form_field |
| form_init() | form_hook |
| form_opts() | form_opts |
| form_opts_off() | form_opts |
| form_opts_on() | form_opts |
| form_page() | form_page |
| form_sub() | form_win |
| form_term() | form_hook |
| form_userptr() | form_userptr |
| form_win() | form_win |
| free_field() | form_field_new |
| free_form() | form_new |
| link_field() | form_field_new |
| link_fieldtype() | link_fieldtype |
| move_field() | form_field |
| new_field() | form_field_new |
| new_form() | form_new |
| new_page() | form_new_page |
| pos_form_cursor() | form_cursor |
| post_form() | form_post |
| scale_form() | form_win |
| set_current_field() | form_page |
| set_field_back() | form_field_attributes |
| set_field_buffer() | form_field_buffer |
| set_field_fore() | form_field_attributes |
| set_field_init() | form_hook |
| set_field_just() | form_field_just |
| set_field_opts() | form_field_opts |
| set_field_pad() | form_field_attributes |
| set_field_status() | form_field_buffer |
| set_field_term() | form_hook |
| set_field_type() | form_field_validation |
| set_field_userptr() | form_field_userptr |
| set_fieldtype_arg() | form_fieldtype |
| set_fieldtype_choice() | form_fieldtype |
| set_form_fields() | form_field |
| set_form_init() | form_hook |
| set_form_opts() | form_field_opts |
| set_form_page() | form_page |
| set_form_sub() | form_win |
| set_form_term() | form_hook |
| set_form_userptr() | form_userptr |
| set_form_win() | form_win |
| set_max_field() | form_field_buffer |
| set_new_page() | form_new_page |
| unpost_form() | form_post |
Routines that return pointers return NULL on error. Routines that return an integer return one of the following error codes:
curses(3) and pages whose names begin form_ for detailed descriptions of the entry points.
The header file <form.h> automatically includes the header files <curses.h> and <eti.h>.
In your library list, libform.a should be before libncurses.a; that is, you want to say -lform -lncurses, not the other way around (which would give you a link error using many linkers).
These routines emulate the System V forms library. They were not supported on Version 7 or BSD versions.