XkbSelectEvents(3)						   XKB FUNCTIONS						XkbSelectEvents(3)

NAME

       XkbSelectEvents -  Selects and / or deselects for delivery of one or more Xkb events and has them delivered under all conditions

SYNOPSIS

       Bool XkbSelectEvents ( display, device_spec, bits_to_change, values_for_bits )
	     Display * display;
	     unsigned int device_spec;
	     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

       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 possible 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 circumstances. 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 XkbSelectEvents are delivered to your program under all circumstances that gen-
       erate  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.

       This request changes the Xkb event selection mask for the keyboard specified by device_spec.

       Each  Xkb event that can be selected is represented by a bit in the bits_to_change and values_for_bits masks. Only the event selection bits
       specified by the bits_to_change parameter are affected; any unspecified bits are left unchanged. To turn on event selection for	an  event,
       set the bit for the event in the bits_to_change parameter and set the corresponding bit in the values_for_bits parameter. To turn off event
       selection for an event, set the bit for the event in the bits_to_change parameter and  do  not  set  the  corresponding	bit  in  the  val-
       ues_for_bits  parameter.  The valid values for both of these parameters are an inclusive bitwise OR of the masks shown in Table 1. There is
       no interface to return your client's current event selection mask. Clients cannot set other clients' event selection masks.

       The X server reports the events defined by Xkb to your client application only if you have requested them via a call to XkbSelectEvents	or
       XkbSelectEventDetails.  Specify the event types in which you are interested in a mask.

       Table  1  lists	the  event  mask  constants that can be specified with the XkbSelectEvents request and the circumstances in which the mask
       should be specified.

			 Table 1 XkbSelectEvents Mask Constants
       ---------------------------------------------------------------------------
       Event Mask		      Value	 Notification Wanted
       ---------------------------------------------------------------------------
       XkbNewKeyboardNotifyMask       (1L<<0)	 Keyboard geometry change

       XkbMapNotifyMask 	      (1L<<1)	 Keyboard mapping change
       XkbStateNotifyMask	      (1L<<2)	 Keyboard state change
       XkbControlsNotifyMask	      (1L<<3)	 Keyboard control change
       XkbIndicatorStateNotifyMask    (1L<<4)	 Keyboard indicator state change
       XkbIndicatorMapNotifyMask      (1L<<5)	 Keyboard indicator map change
       XkbNamesNotifyMask	      (1L<<6)	 Keyboard name change
       XkbCompatMapNotifyMask	      (1L<<7)	 Keyboard compat map change
       XkbBellNotifyMask	      (1L<<8)	 Bell
       XkbActionMessageMask	      (1L<<9)	 Action message
       XkbAccessXNotifyMask	      (1L<<10)	 AccessX features
       XkbExtensionDeviceNotifyMask   (1L<<11)	 Extension device
       XkbAllEventsMask 	      (0xFFF)	 All Xkb events

       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.

       All  event  selection bits are initially zero for clients using the Xkb extension.  Once you set some bits, they remain set for your client
       until you clear them via another call to XkbSelectEvents.

       XkbSelectEvents returns False if the Xkb extension has not been initilialized and True otherwise.

RETURN VALUES

       True	      The XkbSelectEvents function returns True if the Xkb extension has been initilialized.

       False	      The XkbSelectEvents function returns False if the Xkb extension has not been initilialized.

SEE ALSO

       XkbSelectEventDetails(3), XkbUseCoreKbd(3)

X Version 11							   libX11 1.2.1 						XkbSelectEvents(3)