XSendEvent(3X11)                     SysV                     XSendEvent(3X11)



NAME
     XSendEvent, XDisplayMotionBufferSize, XGetMotionEvents - send events

SYNTAX
     Status XSendEvent(display, w, propagate, event_mask, event_send)
           Display *display;
           Window w;
           Bool propagate;
           long event_mask;
           XEvent *event_send;

     unsigned long XDisplayMotionBufferSize(display)
             Display *display;

     XTimeCoord *XGetMotionEvents(display, w, start, stop, nevents_return)
           Display *display;
           Window w;
           Time start, stop;
           int *nevents_return;

ARGUMENTS
     display   Specifies the connection to the X server.

     event_mask
               Specifies the event mask.

     event_send
               Specifies a pointer to the event that is to be sent.

     nevents_return
               Returns the number of events from the motion history buffer.

     propagate Specifies a Boolean value.

     start
     stop      Specify the time interval in which the events are returned from
               the motion history buffer.  You can pass a timestamp or
               CurrentTime.  PointerWindow,

     w         Specifies the window the window the event is to be sent to,.

DESCRIPTION
     The XSendEvent function identifies the destination window, determines
     which clients should receive the specified events, and ignores any active
     grabs.  This function requires you to pass an event mask.  For a
     discussion of the valid event mask names, see section 8.3.  This function
     uses the w argument to identify the destination window as follows:

     ⊕    If w is PointerWindow, the destination window is the window that
          contains the pointer.

     ⊕    If w is InputFocus and if the focus window contains the pointer, the
          destination window is the window that contains the pointer;
          otherwise, the destination window is the focus window.

     To determine which clients should receive the specified events,
     XSendEvent uses the propagate argument as follows:

     ⊕    If event_mask is the empty set, the event is sent to the client that
          created the destination window.  If that client no longer exists, no
          event is sent.

     ⊕    If propagate is False, the event is sent to every client selecting
          on destination any of the event types in the event_mask argument.

     ⊕    If propagate is True and no clients have selected on destination any
          of the event types in event-mask, the destination is replaced with
          the closest ancestor of destination for which some client has
          selected a type in event-mask and for which no intervening window
          has that type in its do-not-propagate-mask. If no such window exists
          or if the window is an ancestor of the focus window and InputFocus
          was originally specified as the destination, the event is not sent
          to any clients.  Otherwise, the event is reported to every client
          selecting on the final destination any of the types specified in
          event_mask.

     The event in the XEvent structure must be one of the core events or one
     of the events defined by an extension (or a BadValue error results) so
     that the X server can correctly byte-swap the contents as necessary. The
     contents of the event are otherwise unaltered and unchecked by the X
     server except to force send_event to True in the forwarded event and to
     set the serial number in the event correctly.

     XSendEvent returns zero if the conversion to wire protocol format failed
     and returns nonzero otherwise.  XSendEvent can generate BadValue and
     BadWindow errors.

     The server may retain the recent history of the pointer motion and do so
     to a finer granularity than is reported by MotionNotify events.  The
     XGetMotionEvents function makes this history available.

     The XGetMotionEvents function returns all events in the motion history
     buffer that fall between the specified start and stop times, inclusive,
     and that have coordinates that lie within the specified window (including
     its borders) at its present placement.  If the start time is later than
     the stop time or if the start time is in the future, no events are
     returned.  If the stop time is in the future, it is equivalent to
     specifying CurrentTime.  XGetMotionEvents can generate a BadWindowe
     error.

DIAGNOSTICS
     BadValue  Some numeric value falls outside the range of values accepted
               by the request.  Unless a specific range is specified for an
               argument, the full range defined by the argument's type is
               accepted.  Any argument defined as a set of alternatives can
               generate this error.

     BadWindow A value for a Window argument does not name a defined Window.

SEE ALSO
     XIfEvent(3X11), XNextEvent(3X11), XPutBackEvent(3X11)
     Xlib - C Language X Interface