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NAME
form - curses extension for programming forms
SYNOPSIS
#include <form.h>
DESCRIPTION
The form 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 form library uses the curses libraries, and a curses
initialization routine such as initscr must be called before
using any of these functions. To use the form library, link
with the options -lform -lcurses.
Current Default Values for Field Attributes
The form library maintains a default value for field attri-
butes. You can get or set this default by calling the
appropriate set_ or retrieval 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.
Routine Name Index
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(3X)
data_ahead form_data(3X)
data_behind form_data(3X)
dup_field form_field_new(3X)
dynamic_fieldinfo form_field_info(3X)
field_arg form_field_validation(3X)
field_back form_field_attributes(3X)
field_buffer form_field_buffer(3X)
field_count form_field(3X)
field_fore form_field_attributes(3X)
field_index form_page(3X)
field_info form_field_info(3X)
field_init form_hook(3X)
field_just form_field_just(3X)
field_opts form_field_opts(3X)
field_opts_off form_field_opts(3X)
field_opts_on form_field_opts(3X)
field_pad form_field_attributes(3X)
field_status form_field_buffer(3X)
field_term form_hook(3X)
field_type form_field_validation(3X)
field_userptr form_field_userptr(3X)
form_driver form_driver(3X)
form_fields form_field(3X)
form_init form_hook(3X)
form_opts form_opts(3X)
form_opts_off form_opts(3X)
form_opts_on form_opts(3X)
form_page form_page(3X)
form_request_by_name form_requestname(3X)
form_request_name form_requestname(3X)
form_sub form_win(3X)
form_term form_hook(3X)
form_userptr form_userptr(3X)
form_win form_win(3X)
free_field form_field_new(3X)
free_form form_new(3X)
link_field form_field_new(3X)
link_fieldtype form_fieldtype(3X)
move_field form_field(3X)
new_field form_field_new(3X)
new_form form_new(3X)
new_page form_new_page(3X)
pos_form_cursor form_cursor(3X)
post_form form_post(3X)
scale_form form_win(3X)
set_current_field form_page(3X)
set_field_back form_field_attributes(3X)
set_field_buffer form_field_buffer(3X)
set_field_fore form_field_attributes(3X)
set_field_init form_hook(3X)
set_field_just form_field_just(3X)
set_field_opts form_field_opts(3X)
set_field_pad form_field_attributes(3X)
set_field_status form_field_buffer(3X)
set_field_term form_hook(3X)
set_field_type form_field_validation(3X)
set_field_userptr form_field_userptr(3X)
set_fieldtype_arg form_fieldtype(3X)
set_fieldtype_choice form_fieldtype(3X)
set_form_fields form_field(3X)
set_form_init form_hook(3X)
set_form_opts form_field_opts(3X)
set_form_page form_page(3X)
set_form_sub form_win(3X)
set_form_term form_hook(3X)
set_form_userptr form_userptr(3X)
set_form_win form_win(3X)
set_max_field form_field_buffer(3X)
set_new_page form_new_page(3X)
unpost_form form_post(3X)
RETURN VALUE
Routines that return pointers return NULL on error. Rou-
tines that return an integer return one of the following
error codes:
E_OK The routine succeeded.
E_CONNECTED
The field is already connected to a form.
E_SYSTEM_ERROR
System error occurred (see errno).
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
E_POSTED
The form is already posted.
E_BAD_STATE
Routine was called from an initialization or termina-
tion function.
E_NO_ROOM
Form is too large for its window.
E_NOT_POSTED
The form has not been posted.
E_UNKNOWN_COMMAND
The form driver code saw an unknown request code.
E_INVALID_FIELD
Contents of a field are not valid.
E_NOT_CONNECTED
No fields are connected to the form.
E_REQUEST_DENIED
The form driver could not process the request.
SEE ALSO
curses(3X) and 3X pages whose names begin "form_" for
detailed descriptions of the entry points.
NOTES
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 GNU ld(1) and many other linkers).
PORTABILITY
These routines emulate the System V forms library. They
were not supported on Version 7 or BSD versions.
AUTHORS
Juergen Pfeifer. Manual pages and adaptation for ncurses by
Eric S. Raymond.
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