freebsd-dev/contrib/ncurses/man/form.3x
2007-01-20 07:32:02 +00:00

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.\" $Id: form.3x,v 1.20 2006/11/04 18:50:09 tom Exp $
.TH form 3X ""
.SH NAME
\fBform\fR - curses extension for programming forms
.SH SYNOPSIS
\fB#include <form.h>\fR
.br
.SH DESCRIPTION
The \fBform\fR 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.
.PP
The \fBform\fR library uses the \fBcurses\fR libraries, and a curses
initialization routine such as \fBinitscr\fR must be called before using any of
these functions. To use the \fBform\fR library, link with the options
\fB-lform -lcurses\fR.
.
.SS Current Default Values for Field Attributes
.
The \fBform\fR library maintains a default value for field attributes. You
can get or set this default by calling the appropriate \fBset_\fR
or retrieval
routine with a \fBNULL\fR field pointer. Changing this default with a
\fBset_\fR function affects future field creations, but does not change the
rendering of fields already created.
.
.SS Routine Name Index
.
The following table lists each \fBform\fR routine and the name of
the manual page on which it is described.
.
.TS
l l
l l .
\fBcurses\fR Routine Name Manual Page Name
=
current_field \fBform_page\fR(3X)
data_ahead \fBform_data\fR(3X)
data_behind \fBform_data\fR(3X)
dup_field \fBform_field_new\fR(3X)
dynamic_fieldinfo \fBform_field_info\fR(3X)
field_arg \fBform_field_validation\fR(3X)
field_back \fBform_field_attributes\fR(3X)
field_buffer \fBform_field_buffer\fR(3X)
field_count \fBform_field\fR(3X)
field_fore \fBform_field_attributes\fR(3X)
field_index \fBform_page\fR(3X)
field_info \fBform_field_info\fR(3X)
field_init \fBform_hook\fR(3X)
field_just \fBform_field_just\fR(3X)
field_opts \fBform_field_opts\fR(3X)
field_opts_off \fBform_field_opts\fR(3X)
field_opts_on \fBform_field_opts\fR(3X)
field_pad \fBform_field_attributes\fR(3X)
field_status \fBform_field_buffer\fR(3X)
field_term \fBform_hook\fR(3X)
field_type \fBform_field_validation\fR(3X)
field_userptr \fBform_field_userptr\fR(3X)
form_driver \fBform_driver\fR(3X)
form_fields \fBform_field\fR(3X)
form_init \fBform_hook\fR(3X)
form_opts \fBform_opts\fR(3X)
form_opts_off \fBform_opts\fR(3X)
form_opts_on \fBform_opts\fR(3X)
form_page \fBform_page\fR(3X)
form_request_by_name \fBform_requestname\fR(3X)
form_request_name \fBform_requestname\fR(3X)
form_sub \fBform_win\fR(3X)
form_term \fBform_hook\fR(3X)
form_userptr \fBform_userptr\fR(3X)
form_win \fBform_win\fR(3X)
free_field \fBform_field_new\fR(3X)
free_fieldtype \fBform_fieldtype\fR(3X)
free_form \fBform_new\fR(3X)
link_field \fBform_field_new\fR(3X)
link_fieldtype \fBform_fieldtype\fR(3X)
move_field \fBform_field\fR(3X)
new_field \fBform_field_new\fR(3X)
new_fieldtype \fBform_fieldtype\fR(3X)
new_form \fBform_new\fR(3X)
new_page \fBform_new_page\fR(3X)
pos_form_cursor \fBform_cursor\fR(3X)
post_form \fBform_post\fR(3X)
scale_form \fBform_win\fR(3X)
set_current_field \fBform_page\fR(3X)
set_field_back \fBform_field_attributes\fR(3X)
set_field_buffer \fBform_field_buffer\fR(3X)
set_field_fore \fBform_field_attributes\fR(3X)
set_field_init \fBform_hook\fR(3X)
set_field_just \fBform_field_just\fR(3X)
set_field_opts \fBform_field_opts\fR(3X)
set_field_pad \fBform_field_attributes\fR(3X)
set_field_status \fBform_field_buffer\fR(3X)
set_field_term \fBform_hook\fR(3X)
set_field_type \fBform_field_validation\fR(3X)
set_field_userptr \fBform_field_userptr\fR(3X)
set_fieldtype_arg \fBform_fieldtype\fR(3X)
set_fieldtype_choice \fBform_fieldtype\fR(3X)
set_form_fields \fBform_field\fR(3X)
set_form_init \fBform_hook\fR(3X)
set_form_opts \fBform_field_opts\fR(3X)
set_form_page \fBform_page\fR(3X)
set_form_sub \fBform_win\fR(3X)
set_form_term \fBform_hook\fR(3X)
set_form_userptr \fBform_userptr\fR(3X)
set_form_win \fBform_win\fR(3X)
set_max_field \fBform_field_buffer\fR(3X)
set_new_page \fBform_new_page\fR(3X)
unpost_form \fBform_post\fR(3X)
.TE
.SH RETURN VALUE
Routines that return pointers return \fBNULL\fR on error,
and set errno to the corresponding error-code returned by functions
returning an integer.
Routines that return
an integer return one of the following error codes:
.TP 5
.B E_OK
The routine succeeded.
.TP 5
.B E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
.TP 5
.B E_BAD_STATE
Routine was called from an initialization or termination function.
.TP 5
.B E_CONNECTED
The field is already connected to a form.
.TP 5
.B E_INVALID_FIELD
Contents of a field are not valid.
.TP 5
.B E_NOT_CONNECTED
No fields are connected to the form.
.TP 5
.B E_NOT_POSTED
The form has not been posted.
.TP 5
.B E_NO_ROOM
Form is too large for its window.
.TP 5
.B E_POSTED
The form is already posted.
.TP 5
.B E_REQUEST_DENIED
The form driver could not process the request.
.TP 5
.B E_SYSTEM_ERROR
System error occurred (see \fBerrno\fR).
.TP 5
.B E_UNKNOWN_COMMAND
The form driver code saw an unknown request code.
.SH SEE ALSO
\fBcurses\fR(3X) and related pages whose names begin "form_" for detailed
descriptions of the entry points.
.SH NOTES
The header file \fB<form.h>\fR automatically includes the header files
\fB<curses.h>\fR and \fB<eti.h>\fR.
.PP
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 most linkers).
.SH PORTABILITY
These routines emulate the System V forms library. They were not supported on
Version 7 or BSD versions.
.SH AUTHORS
Juergen Pfeifer. Manual pages and adaptation for ncurses by Eric
S. Raymond.
.SH SEE ALSO
This describes \fBncurses\fR
version @NCURSES_MAJOR@.@NCURSES_MINOR@ (patch @NCURSES_PATCH@).
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