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field_init(3) [netbsd man page]

FORMS(3)						   BSD Library Functions Manual 						  FORMS(3)

NAME
field_init, field_term, form_init, form_term, set_field_init, set_field_term, set_form_init, set_form_term -- form library LIBRARY
Curses Form Library (libform, -lform) SYNOPSIS
#include <form.h> void (*)(FORM *) field_init(FORM *form); void (*)(FORM *) field_term(FORM *form); void (*)(FORM *) form_init(FORM *form); void (*)(FORM *) form_term(FORM *form); int set_field_init(FORM *form, void (*function)(FORM *)); int set_field_term(FORM *form, void (*function)(FORM *)); int set_form_init(FORM *form, void (*function)(FORM *)); int set_form_term(FORM *form, void (*function)(FORM *)); DESCRIPTION
The field_init() function returns a pointer to the function that will be called just after the current field changes and just before the form is posted, this function may be set by using the set_field_init() function. Similarly, the function field_term() will return a pointer to the function that will be called just before the current field changes and just after the form is unposted, this function pointer may be set by using the set_field_term() function. The form_init() function will return a pointer to the function that will be called just before the form is posted to the screen, this function can be set by calling the set_form_init() function. The form_term() function will return a pointer to the function that will be called just after the form is unposted from the screen, this function may be set by using the set_form_term() function. By default, the init and term function pointers are NULL. RETURN VALUES
Functions returning pointers will return NULL if an error is detected. The functions that return an int will return one of the following error values: E_OK The function was successful. SEE ALSO
curses(3), forms(3) NOTES
The header <form.h> automatically includes both <curses.h> and <eti.h>. BSD
January 1, 2001 BSD

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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 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 TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
curses(3CURSES), forms(3CURSES), attributes(5) NOTES
The header <form.h> automatically includes the headers <eti.h> and <curses.h>. SunOS 5.11 31 Dec 1996 form_hook(3CURSES)
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