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

-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

       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 indicators 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 indicator, 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 XkbIndicatorMapNotify, 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.

BadAtom        A name is neither a valid Atom or None

       BadImplementation
                      Invalid reply from server

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

XkbIndicatorMapNotify(3), XkbIndicatorStateNotify(3)

X Version 11                                      libX11 1.7.5                            XkbChangeIndicators(3)

            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;

BoolXkbChangeIndicators(Display*dpy,XkbDescPtrxkb,XkbIndicatorChangesPtrchanges,unsignedintstate);