forms

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
SEE ALSO
NOTES
PORTABILITY
AUTHORS

NAME

forms - curses extension for programming forms

SYNOPSIS

#include <form.h>

DESCRIPTION

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 must be called before using any of these functions. To use the forms library, link with the options -lform -lcurses.

Current Default Values for Field Attributes
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.

Routine Name Index
The following table lists each form routine and the name of the manual page on which it is described.

RETURN VALUE

Routines that return pointers return NULL on error. Routines 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 termination 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.

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.