XkbSetNamedIndicator - Names an indicator if it is not already named; toggles the state of the indicator;

dpy    connection to the X server

       device_spec
              device ID, or XkbUseCoreKbd

       led_class
              feedback class, or XkbDfltXIClass

       led_id feedback ID, or XkbDfltXIId

       name   name of the indicator to change

       change_state
              whether to change the indicator state or not

       state  desired new state for the indicator

       create_new
              whether a new indicator with the specified name should be created when necessary

       map    new map for the indicator

       If  a  compatible version of the Xkb extension is not available in the server, XkbSetNamedDeviceIndicator
       returns False. Otherwise, it sends a request to the X server to change the indicator  specified  by  name
       and returns True.

       If  change_state  is  True,  XkbSetNamedDeviceIndicator tells the server to change the state of the named
       indicator to the value specified by state.  If change_state is False, then state is not used.

       If an indicator with the name specified by name does not already exist, the  create_new  parameter  tells
       the  server  whether  it should create a new named indicator. If create_new is True, the server finds the
       first indicator that doesn't have a name and gives it the  name  specified  by  name.   If  the  optional
       parameter, map, is not NULL, XkbSetNamedDeviceIndicator tells the server to change the indicator's map to
       the values specified in map.

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

       XkbSetNamedIndicator is a convenience function that calls XkbSetNamedDeviceIndicator with  a  device_spec
       of  XkbUseCoreKbd,  a  led_class  of  XkbDfltXIClass, and a led_id of XkbDfltXIId.  It returns the return
       value from XkbSetNamedDeviceIndicator.

BadAtom        A name is neither a valid Atom or None

       BadImplementation
                      Invalid reply from server

       BadKeyboarddevice_spec does not specify a device with indicators.

       BadMatchled_id is not DfltXIId and does not specify a feedback of the class specified by led_class
                      on the device specified by device_spec.

       BadValueled_class does not specify DfltXIClass, LedFeedbackClass, or KbdFeedbackClass.

       XkbSetNamedIndicator - Names an indicator if it is not already named; toggles the state of the indicator;
       sets the indicator to a specified state and sets the indicator map for the indicator

       True           The  XkbSetNamedIndicator  and  XkbSetNamedDeviceIndicator  functions  return  True  if  a
                      compatible version of the Xkb extension is available in the server.

       False          The  XkbSetNamedIndicator  and  XkbSetNamedDeviceIndicator  functions  return  False  if a
                      compatible version of the Xkb extension is not available in the server.

XkbIndicatorMapNotify(3), XkbIndicatorStateNotify(3), XkbNamesNotify(3)

X Version 11                                      libX11 1.8.12                          XkbSetNamedIndicator(3)

BoolXkbSetNamedDeviceIndicator(Display*dpy,unsignedintdevice_spec,unsignedintled_class,unsignedintled_id,Atomname,Boolchange_state,Boolstate,Boolcreate_new,XkbIndicatorMapPtrmap);BoolXkbSetNamedIndicator(Display*dpy,Atomname,Boolchange_state,Boolstate,Boolcreate_new,XkbIndicatorMapPtrmap);