XkbChangeIndicators(3)						   XKB FUNCTIONS					    XkbChangeIndicators(3)

NAME

       XkbChangeIndicators - Changes indicator maps or state without passing the entire keyboard description

SYNOPSIS

       Bool XkbChangeIndicators (Display *dpy, XkbDescPtr xkb, XkbIndicatorChangesPtr changes, unsigned int state);

ARGUMENTS

       - dpy  connection to the X server

       - xkb  keyboard description from which names are to be taken.

       - changes
	      indicators to be updated on the server

       - state
	      new state of indicators listed in changes->state_changes

DESCRIPTION

       The XkbIndicatorChangesRec identifies small modifications to the indicator map.	Use it with the function XkbChangeIndicators to reduce the
       amount of traffic sent to the server (see STRUCTURES).

       The state_changes field is a mask that specifies the indicators that have changed state, and map_changes is a mask that specifies the indi-
       cators whose maps have changed.

       XkbChangeIndicators  copies  any maps specified by changes from the keyboard description, xkb, to the server specified by dpy.  If any bits
       are set in the state_changes field of changes, XkbChangeIndicators also sets the state of those indicators to the values specified  in  the
       state mask. A 1 bit in state turns the corresponding indicator on, a 0 bit turns it off.

       In addition, it can also generate XkbIndicatorStateNotify and XkbIndicatorMapNotify events.

       Whenever  an  indicator	changes  state,  the server sends XkbIndicatorStateNotify events to all interested clients. Similarly, whenever an
       indicator's map changes, the server sends XkbIndicatorMapNotify events to all interested clients.

       To receive XkbIndicatorStateNotify events, use XkbSelectEvents with both  the  bits_to_change  and  values_for_bits  parameters	containing
       XkbIndicatorStateNotifyMask. To receive XkbIndicatorMapNotify events, use XkbSelectEvents with XkbIndicatorMapNotifyMask.

       To  receive  events  for  only  specific indicators, use XkbSelectEventDetails.	Set the event_type parameter to XkbIndicatorStateNotify or
       XkbIndicatorMapNotify, and set both the bits_to_change and values_for_bits detail parameters to a mask where each bit specifies one indica-
       tor, turning on those bits that specify the indicators for which you want to receive events.

       xkb_type  is  either  XkbIndicatorStateNotify or XkbIndicatorMapNotify, depending on whether the event is a kbIndicatorStateNotify event or
       kbIndicatorMapNotify event.

       The changed parameter is a mask that is the bitwise inclusive OR of the indicators that have changed. If the event is  of  type	XkbIndica-
       torMapNotify,  changed  reports the maps that changed. If the event is of type XkbIndicatorStateNotify, changed reports the indicators that
       have changed state.  state is a mask that specifies the current state of all indicators,  whether  they	have  changed  or  not,  for  both
       XkbIndicatorStateNotify and IndicatorMapNotify events.

STRUCTURES

	    typedef struct _XkbIndicatorChanges {
		unsigned int	      state_changes;
		unsigned int	       map_changes;
	    }XkbIndicatorChangesRec,*XkbIndicatorChangesPtr;

       Both types of indicator events use the same structure:

	   typedef struct _XkbIndicatorNotify {
	       int	      type;	   /* Xkb extension base event code */
	       unsigned long  serial;	   /* X server serial number for event */
	       Bool	      send_event;  /* True => synthetically generated */
	       Display *      display;	   /* server connection where event generated */
	       Time	      time;	   /* server time when event generated */
	       int	      xkb_type;    /* specifies state or map notify */
	       int	      device;	   /* Xkb device ID, will not be XkbUseCoreKbd*/
	       unsigned int   changed;	   /* mask of indicators with new state or map */
	       unsigned int   state;	   /* current state of all indicators */
	   } XkbIndicatorNotifyEvent;

DIAGNOSTICS

       BadAtom	      A name is neither a valid Atom or None

       BadImplementation
		      Invalid reply from server

SEE ALSO

       XkbIndicatorMapNotify(3), XkbIndicatorStateNotify(3)

X Version 11							   libX11 1.6.0 					    XkbChangeIndicators(3)