XkbSelectEventDetails man page on Ubuntu

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XkbSelectEventDetails(3)	 XKB FUNCTIONS	      XkbSelectEventDetails(3)

NAME
       XkbSelectEventDetails  -	 Selects or deselects for a specific Xkb event
       and optionally places conditions	 on  when  events  of  that  type  are
       reported to your client

SYNOPSIS
       Bool XkbSelectEventDetails (Display *display, unsigned int device_spec,
	      unsigned	int  event_type,  unsigned  long  int  bits_to_change,
	      unsigned long int values_for_bits);

ARGUMENTS
       display
	      connection to the X server

       device_spec
	      device ID, or XkbUseCoreKbd

       event_type
	      Xkb event type of interest

       bits_to_change
	      determines events to be selected / deselected

       values_for_bits
	      1=>select, 0->deselect; for events in bits_to_change

DESCRIPTION
       Xkb  events  are	 selected using an event mask, much the same as normal
       core X events are selected. However, unlike selecting  core  X  events,
       where  you must specify the selection status (on or off) for all possi‐
       ble event types whenever you wish to change the selection criteria  for
       any one event, Xkb allows you to restrict the specification to only the
       event types you wish to change. This means that	you  do	 not  need  to
       remember	 the  event  selection values for all possible types each time
       you want to change one of them.

       Many Xkb event types are	 generated  under  several  different  circum‐
       stances. When selecting to receive an Xkb event, you may specify either
       that you want it delivered under all circumstances, or that you want it
       delivered only for a subset of the possible circumstances.

       You  can	 also deselect an event type that was previously selected for,
       using the same granularity.

       Xkb provides two functions to  select  and  deselect  delivery  of  Xkb
       events.	 XkbSelectEvents  allows you to select or deselect delivery of
       more than one Xkb event type at	once.  Events  selected	 using	XkbSe‐
       lectEvents  are	delivered to your program under all circumstances that
       generate the events.  To restrict delivery of an event to a  subset  of
       the conditions under which it occurs, use XkbSelectEventDetails. XkbSe‐
       lectEventDetails only allows you to change the selection conditions for
       a  single  event	 at a time, but it provides a means of fine-tuning the
       conditions under which the event is delivered.

       To select or deselect for a specific Xkb	 event	and  optionally	 place
       conditions on when events of that type are reported to your client, use
       XkbSelectEventDetails.  This allows you to exercise a finer granularity
       of control over delivery of Xkb events with XkbSelectEvents.

       While  XkbSelectEvents  allows  multiple	 events to be selected, XkbSe‐
       lectEventDetails changes the selection criteria for a  single  type  of
       Xkb event. The interpretation of the bits_to_change and values_for_bits
       masks depends on the event type in question.

       XkbSelectEventDetails changes the Xkb event selection mask for the key‐
       board   specified  by  device_spec  and	the  Xkb  event	 specified  by
       event_type.  To turn on event selection for an event  detail,  set  the
       bit  for	 the detail in the bits_to_change parameter and set the corre‐
       sponding bit in the values_for_bits parameter. To turn off event detail
       selection   for	 a   detail,  set  the	bit  for  the  detail  in  the
       bits_to_change parameter and do not set the corresponding  bit  in  the
       values_for_bits parameter.

       If  an  invalid	event  type  is	 specified,  a BadValue protocol error
       results. If a bit is not set in the bits_to_change parameter,  but  the
       corresponding  bit  is set in the values_for_bits parameter, a BadMatch
       protocol error results. If an  undefined	 bit  is  set  in  either  the
       bits_to_change  or  the	values_for_bits parameter, a BadValue protocol
       error results.

       For each type of Xkb event, the legal event details that you can	 spec‐
       ify  in	the  XkbSelectEventDetails  request are listed in the chapters
       that describe each event in detail.

DIAGNOSTICS
       BadMatch	      A compatible version of Xkb was  not  available  in  the
		      server or an argument has correct type and range, but is
		      otherwise invalid

       BadValue	      An argument is out of range

SEE ALSO
       XkbSelectEvents(3), XkbUseCoreKbd(3)

X Version 11			 libX11 1.3.2	      XkbSelectEventDetails(3)
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