form_hook(3) UNIX Programmer's Manual form_hook(3)
form_hook - set hooks for automatic invocation by applica-
tions
#include <form.h>
int set_field_init(FORM *form, void (*func)(FORM *));
void (*)(FORM *) field_init(const FORM *form);
int set_field_term(FORM *form, void (*func)(FORM *));
void (*)(FORM *) field_term(const FORM *form);
int set_form_init(FORM *form, void (*func)(FORM *));
void (*)(FORM *) form_init(const FORM *form);
int set_form_term(FORM *form, void (*func)(FORM *));
void (*)(FORM *) form_term(const FORM *form);
These functions make it possible to set hook functions to be
called at various points in the automatic processing of
input event codes by form_driver.
The function set_field_init sets a hook to be called at
form-post time and each time the selected field changes
(after the change). field_init returns the current field
init hook, if any (NULL if there is no such hook).
The function set_field_term sets a hook to be called at
form-unpost time and each time the selected field changes
(before the change). field_term returns the current field
term hook, if any (NULL if there is no such hook).
The function set_form_init sets a hook to be called at
form-post time and just after a page change once it is
posted. form_init returns the current form init hook, if
any (NULL if there is no such hook).
The function set_form_term sets a hook to be called at
form-unpost time and just before a page change once it is
posted. form_init returns the current form term hook, if
any (NULL if there is no such hook).
Routines that return pointers return NULL on error. Other
routines return one of the following:
E_OK The routine succeeded.
E_SYSTEM_ERROR
System error occurred (see errno).
curses(3), form(3).
MirOS BSD #10-current Printed 19.2.2012 1
form_hook(3) UNIX Programmer's Manual form_hook(3)
The header file <form.h> automatically includes the header
file <curses.h>.
These routines emulate the System V forms library. They
were not supported on Version 7 or BSD versions.
Juergen Pfeifer. Manual pages and adaptation for new curses
by Eric S. Raymond.
MirOS BSD #10-current Printed 19.2.2012 2
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