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<HTML>
<BODY>
<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
</PRE>
<H2>NAME</H2><PRE>
<B>form</B> - curses extension for programming forms
</PRE>
<H2>SYNOPSIS</H2><PRE>
<B>#include</B> <B><form.h></B>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <B>form</B> 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 inter-
action with the user.
The <B>form</B> library uses the <B>curses</B> libraries, and a curses
initialization routine such as <B>initscr</B> must be called
before using any of these functions. To use the <B>form</B>
library, link with the options <B>-lform</B> <B>-lcurses</B>.
<B>Current</B> <B>Default</B> <B>Values</B> <B>for</B> <B>Field</B> <B>Attributes</B>
The <B>form</B> library maintains a default value for field
attributes. You can get or set this default by calling
the appropriate <B>set_</B> or retrieval routine with a <B>NULL</B>
field pointer. Changing this default with a <B>set_</B> function
affects future field creations, but does not change the
rendering of fields already created.
<B>Routine</B> <B>Name</B> <B>Index</B>
The following table lists each <B>form</B> routine and the name
of the manual page on which it is described.
<B>curses</B> Routine Name Manual Page Name
-------------------------------------------------
current_field <B><A HREF="form_page.3x.html">form_page(3x)</A></B>
data_ahead <B><A HREF="form_data.3x.html">form_data(3x)</A></B>
data_behind <B><A HREF="form_data.3x.html">form_data(3x)</A></B>
dup_field <B><A HREF="form_field_new.3x.html">form_field_new(3x)</A></B>
dynamic_fieldinfo <B><A HREF="form_field_info.3x.html">form_field_info(3x)</A></B>
field_arg <B><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></B>
field_back <B><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></B>
field_buffer <B><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></B>
field_count <B><A HREF="form_field.3x.html">form_field(3x)</A></B>
field_fore <B><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></B>
field_index <B><A HREF="form_page.3x.html">form_page(3x)</A></B>
field_info <B><A HREF="form_field_info.3x.html">form_field_info(3x)</A></B>
field_init <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
field_just <B><A HREF="form_field_just.3x.html">form_field_just(3x)</A></B>
field_opts <B><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></B>
field_opts_off <B><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></B>
field_opts_on <B><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></B>
field_pad <B><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></B>
field_status <B><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></B>
field_term <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
field_type <B><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></B>
field_userptr <B><A HREF="form_field_userptr.3x.html">form_field_userptr(3x)</A></B>
form_driver <B><A HREF="form_driver.3x.html">form_driver(3x)</A></B>
form_fields <B><A HREF="form_field.3x.html">form_field(3x)</A></B>
form_init <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
form_opts <B><A HREF="form_opts.3x.html">form_opts(3x)</A></B>
form_opts_off <B><A HREF="form_opts.3x.html">form_opts(3x)</A></B>
form_opts_on <B><A HREF="form_opts.3x.html">form_opts(3x)</A></B>
form_page <B><A HREF="form_page.3x.html">form_page(3x)</A></B>
form_request_by_name <B><A HREF="form_requestname.3x.html">form_requestname(3x)</A></B>
form_request_name <B><A HREF="form_requestname.3x.html">form_requestname(3x)</A></B>
form_sub <B><A HREF="form_win.3x.html">form_win(3x)</A></B>
form_term <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
form_userptr <B><A HREF="form_userptr.3x.html">form_userptr(3x)</A></B>
form_win <B><A HREF="form_win.3x.html">form_win(3x)</A></B>
free_field <B><A HREF="form_field_new.3x.html">form_field_new(3x)</A></B>
free_form <B><A HREF="form_new.3x.html">form_new(3x)</A></B>
link_field <B><A HREF="form_field_new.3x.html">form_field_new(3x)</A></B>
link_fieldtype <B><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></B>
move_field <B><A HREF="form_field.3x.html">form_field(3x)</A></B>
new_field <B><A HREF="form_field_new.3x.html">form_field_new(3x)</A></B>
new_form <B><A HREF="form_new.3x.html">form_new(3x)</A></B>
new_page <B><A HREF="form_new_page.3x.html">form_new_page(3x)</A></B>
pos_form_cursor <B><A HREF="form_cursor.3x.html">form_cursor(3x)</A></B>
post_form <B><A HREF="form_post.3x.html">form_post(3x)</A></B>
scale_form <B><A HREF="form_win.3x.html">form_win(3x)</A></B>
set_current_field <B><A HREF="form_page.3x.html">form_page(3x)</A></B>
set_field_back <B><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></B>
set_field_buffer <B><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></B>
set_field_fore <B><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></B>
set_field_init <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
set_field_just <B><A HREF="form_field_just.3x.html">form_field_just(3x)</A></B>
set_field_opts <B><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></B>
set_field_pad <B><A HREF="form_field_attributes.3x.html">form_field_attributes(3x)</A></B>
set_field_status <B><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></B>
set_field_term <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
set_field_type <B><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></B>
set_field_userptr <B><A HREF="form_field_userptr.3x.html">form_field_userptr(3x)</A></B>
set_fieldtype_arg <B><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></B>
set_fieldtype_choice <B><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></B>
set_form_fields <B><A HREF="form_field.3x.html">form_field(3x)</A></B>
set_form_init <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
set_form_opts <B><A HREF="form_field_opts.3x.html">form_field_opts(3x)</A></B>
set_form_page <B><A HREF="form_page.3x.html">form_page(3x)</A></B>
set_form_sub <B><A HREF="form_win.3x.html">form_win(3x)</A></B>
set_form_term <B><A HREF="form_hook.3x.html">form_hook(3x)</A></B>
set_form_userptr <B><A HREF="form_userptr.3x.html">form_userptr(3x)</A></B>
set_form_win <B><A HREF="form_win.3x.html">form_win(3x)</A></B>
set_max_field <B><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></B>
set_new_page <B><A HREF="form_new_page.3x.html">form_new_page(3x)</A></B>
unpost_form <B><A HREF="form_post.3x.html">form_post(3x)</A></B>
</PRE>
<H2>RETURN VALUE</H2><PRE>
Routines that return pointers return <B>NULL</B> on error. Rou-
tines that return an integer return one of the following
error codes:
<B>E_OK</B> The routine succeeded.
<B>E_CONNECTED</B>
The field is already connected to a form.
<B>E_SYSTEM_ERROR</B>
System error occurred (see <B>errno</B>).
<B>E_BAD_ARGUMENT</B>
Routine detected an incorrect or out-of-range argu-
ment.
<B>E_POSTED</B>
The form is already posted.
<B>E_BAD_STATE</B>
Routine was called from an initialization or termina-
tion function.
<B>E_NO_ROOM</B>
Form is too large for its window.
<B>E_NOT_POSTED</B>
The form has not been posted.
<B>E_UNKNOWN_COMMAND</B>
The form driver code saw an unknown request code.
<B>E_INVALID_FIELD</B>
Contents of a field are not valid.
<B>E_NOT_CONNECTED</B>
No fields are connected to the form.
<B>E_REQUEST_DENIED</B>
The form driver could not process the request.
</PRE>
<H2>SEE ALSO</H2><PRE>
<B><A HREF="ncurses.3x.html">curses(3x)</A></B> and 3x pages whose names begin "form_" for
detailed descriptions of the entry points.
</PRE>
<H2>NOTES</H2><PRE>
The header file <B><form.h></B> automatically includes the header
files <B><curses.h></B> and <B><eti.h></B>.
In your library list, libform.a should be before libn-
curses.a; that is, you want to say `-lform -lncurses', not
the other way around (which would give you a link error
using GNU <B><A HREF="ld.1.html">ld(1)</A></B> and many other linkers).
</PRE>
<H2>PORTABILITY</H2><PRE>
These routines emulate the System V forms library. They
were not supported on Version 7 or BSD versions.
</PRE>
<H2>AUTHORS</H2><PRE>
Juergen Pfeifer. Manual pages and adaptation for ncurses
by Eric S. Raymond.
</PRE>
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