xref: /titanic_44/usr/src/man/man3curses/form_hook.3curses (revision 8682d1ef2a0960ed5a9f05b9448eaa3e68ac931f)
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Copyright 1989 AT&T
Portions Copyright (c) 1996, Sun Microsystems, Inc. All Rights Reserved.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
form_hook 3CURSES "31 Dec 1996" "SunOS 5.11" "Curses Library Functions"
NAME
form_hook, set_form_init, form_init, set_form_term, form_term, set_field_init, field_init, set_field_term, field_term - assign application-specific routines for invocation by forms
SYNOPSIS

cc [ flag... ] file... -lform  -lcurses  [ library... ]
#include <form.h>



int set_form_init(FORM *form, void (*func)(FORM*));

void (*form_init)(FORM *form);

int set_form_term(FORM *form, void (*func)(FORM*));

void (*form_term)(FORM *form);

int set_field_init(FORM *form, void (*func)(FORM*));

void (*field_init)(FORM *form);

int set_field_term(FORM *form, void (*func)(FORM*));

void (*field_term)(FORM *form);
DESCRIPTION

These routines allow the programmer to assign application specific routines to be executed automatically at initialization and termination points in the forms application. The user need not specify any application-defined initialization or termination routines at all, but they may be helpful for displaying messages or page numbers and other chores.

set_form_init() assigns an application-defined initialization function to be called when the form is posted and just after a page change. form_init() returns a pointer to the initialization function, if any.

set_form_term() assigns an application-defined function to be called when the form is unposted and just before a page change. form_term() returns a pointer to the function, if any.

set_field_init() assigns an application-defined function to be called when the form is posted and just after the current field changes. field_init() returns a pointer to the function, if any.

set_field_term() assigns an application-defined function to be called when the form is unposted and just before the current field changes. field_term() returns a pointer to the function, if any.

RETURN VALUES

Routines that return pointers always return NULL on error. Routines that return an integer return one of the following:

E_OK

The function returned successfully.

E_SYSTEM_ERROR

System error.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelUnsafe
SEE ALSO

curses(3CURSES), forms(3CURSES), attributes(5)

NOTES

The header <form.h> automatically includes the headers <eti.h> and <curses.h>.