snd_ctl_add_vmaster_hook(9) [centos man page]

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)

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