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
       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 generate the events.  To restrict delivery of an event to a subset
       of the conditions under which it occurs, use XkbSelectEventDetails.
       XkbSelectEventDetails 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,
       XkbSelectEventDetails 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
       keyboard 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
       corresponding 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
       specify 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 1.3.6