SND_CTL_ADD_VMASTER_(9) Control/Mixer API SND_CTL_ADD_VMASTER_(9)NAME
snd_ctl_add_vmaster_hook - Add a hook to a vmaster control
SYNOPSIS
int snd_ctl_add_vmaster_hook(struct snd_kcontrol * kcontrol, void (*hook) (void *private_data, int), void * private_data);
ARGUMENTS
kcontrol
vmaster kctl element
hook
the hook function
private_data
the private_data pointer to be saved
DESCRIPTION
Adds the given hook to the vmaster control element so that it's called at each time when the value is changed.
RETURN
Zero.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_CTL_ADD_VMASTER_(9)
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MENU_HOOK(3) BSD Library Functions Manual MENU_HOOK(3)NAME
item_init, item_term, menu_init, menu_term, set_item_init, set_item_term, set_menu_init, set_menu_term -- get or set handler functions for
menu post/unpost or item change
LIBRARY
Curses Menu Library (libmenu, -lmenu)
SYNOPSIS
#include <menu.h>
void (*hook)()
item_init(MENU *menu);
void (*hook)()
item_term(MENU *menu);
void (*hook)()
menu_init(MENU *menu);
void (*hook)()
menu_term(MENU *menu);
int
set_item_init(MENU *menu, void (*hook)()));
int
set_item_term(MENU *menu, void (*hook)()));
int
set_menu_init(MENU *menu, void (*hook)()));
int
set_menu_term(MENU *menu, void (*hook)()));
DESCRIPTION
The item_init() function returns a pointer to the function that will be called whenever the menu is posted and also just after the current
item changes. This is set by the set_item_init() call. The item_term() function returns a pointer to the function that will be called
before the menu is unposted and just before the current item changes, this pointer is set by the set_item_term() call. The menu_init() func-
tions returns a pointer to the function that will be called just before the menu is posted to the screen. This pointer is set by the
set_menu_init() function call. The menu_term() function returns a pointer to the function that will be called just after the menu has been
unposted, this pointer is set by the set_menu_term() function.
SEE ALSO curses(3), menus(3)NOTES
The header <menu.h> automatically includes both <curses.h> and <eti.h>.
BSD September 10, 1999 BSD
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