form_hook(3CURSES) Curses Library Functions form_hook(3CURSES)NAME
form_hook, set_form_init, form_init, set_form_term, form_term,
set_field_init, field_init, set_field_term, field_term - assign appli‐
cation-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 rou‐
tines to be executed automatically at initialization and termination
points in the forms application. The user need not specify any applica‐
tion-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 TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Unsafe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOcurses(3CURSES), forms(3CURSES), attributes(5)NOTES
The header <form.h> automatically includes the headers <eti.h> and
<curses.h>.
SunOS 5.10 31 Dec 1996 form_hook(3CURSES)
