XkbNoteIndicatorChanges(3)XKB FUNCTIONSXkbNoteIndicatorChanges(3)



NAME
       XkbNoteIndicatorChanges  -  Notes the changes in a changes
       structure

SYNOPSIS
       void XkbNoteIndicatorChanges ( old, new, wanted )
             XkbIndicatorChangesPtr old;
             XkbIndicatorNotifyEvent *new;
             unsigned int wanted;

ARGUMENTS
       - old  XkbIndicatorChanges structure to be updated

       - new  event from which changes are to be copied

       - wanted
              which changes are to be noted

DESCRIPTION
       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  XkbSe-
       lectEvents   with   both   the   bits_to_change  and  val-
       ues_for_bits parameters containing  XkbIndicatorStateNoti-
       fyMask. To receive XkbIndicatorMapNotify events, use XkbS-
       electEvents with XkbIndicatorMapNotifyMask.

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

       The changed parameter is a mask that is the bitwise inclu-
       sive  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 XkbIndicatorStateNo-
       tify, 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.

       When your client application receives either a  XkbIndica-
       torStateNotify  event  or XkbIndicatorMapNotify event, you
       can note the changes in a  changes  structure  by  calling
       XkbNoteIndicatorChanges.


       The  wanted  parameter  is  the  bitwise  inclusive  OR of
       XkbIndicatorMapMask   and   XkbIndicatorStateMask.    Xkb-
       NoteIndicatorChanges  copies  any  changes reported in new
       and specified in wanted into the changes record  specified
       by old.

STRUCTURES
       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;

       xkb_type  is  either XkbIndicatorStateNotify or XkbIndica-
       torMapNotify, depending on whether the event is a  kbIndi-
       catorStateNotify event or kbIndicatorMapNotify event.

SEE ALSO
       XkbIndicatorMapMask(3),  XkbIndicatorStateMask(3),  XkbSe-
       lectEventDetails(3), XkbSelectEvents(3)



X Version 11               libX11 1.1.5XkbNoteIndicatorChanges(3)