form(3X)form(3X)NAMEform - curses extension for programming forms
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 inter‐
action with the user.
The form library uses the curses libraries. To use the form library,
link with the options -lform -lcurses.
Your program should set up the locale, e.g.,
so that input/output processing will work.
A curses initialization routine such as initscr must be called before
using any of these functions.
Current Default Values for Field Attributes
The form library maintains a default value for field attributes. 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.
Routines that return pointers return NULL on error, and set errno to
the corresponding error-code returned by functions returning an inte‐
ger. Routines that return an integer return one of the following error
E_OK The routine succeeded.
Routine detected an incorrect or out-of-range argument.
Routine was called from an initialization or termination function.
The field is already connected to a form.
Contents of a field are not valid.
No fields are connected to the form.
The form has not been posted.
Form is too large for its window.
The form is already posted.
The form driver could not process the request.
System error occurred (see errno).
The form driver code saw an unknown request code.
SEE ALSOcurses(3X) and related 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 most linkers).
These routines emulate the System V forms library. They were not sup‐
ported on Version 7 or BSD versions.
Juergen Pfeifer. Manual pages and adaptation for ncurses by Eric S.
This describes ncurses version 5.7 (patch 20081102).