XSendExtensionEvent(3X11)

     NAME
          XSendExtensionEvent - send input extension events to a
          client

     SYNTAX
          Status XSendExtensionEvent(display, device, destination,
          propagate, event_count, event_list, event_send)
                Display *display;
                XDevice *device;
                Window destination;
                Bool propagate;
                int event_count;
                XEventClass *event_list;
                XEvent *event_send;

     ARGUMENTS
          display     Specifies the connection to the X server.

          device      Specifies the device from which the events are
                      to be sent.

          destination Specifies the window the event is to be sent to.
                      You can pass window id, PointerWindow, or
                      InputFocus.

          propagate   Specifies a Boolean value that is either True or
                      False.

          event_count Specifies the count of XEventClasses in
                      event_list.

          event_list  Specifies the list of event selections to be
                      used.

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

          The XSendExtensionEvent request identifies the destination
          window, determines which clients should receive the
          specified events, and ignores any active grabs.  This
          request requires you to pass an event class list.  For a
          discussion of the valid event class names, see
          XOpenDevice(3X11).  This request uses the w argument to
          identify the destination window as follows:

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

          o    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, XSendExtensionEvent uses the propagate argument as
          follows:

          o    If event_list 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.

          o    If propagate is False, the event is sent to every
               client selecting on destination any of the event types
               specified by the event_list array.

          o    If propagate is True and no clients have selected on
               destination any of the events specified by the
               event_list array, the destination is replaced with the
               closest ancestor of destination for which some client
               has selected a type specified by the event-list array
               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 events specified in the
               event_list array.

          The event in the XEvent structure must be one of the events
          defined by the input 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.

          XSendExtensionEvent returns zero if the conversion to wire
          protocol format failed and returns nonzero otherwise.
          XSendExtensionEvent can generate BadClass, BadDevice,
          BadValue, and BadWindow errors.

     DIAGNOSTICS
          BadDevice   An invalid device was specified.  The specified
                      device does not exist or has not been opened by
                      this client via XOpenInputDevice.  This error
                      may also occur if the specified device is the X
                      keyboard or X pointer device.

          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
          Programming with Xlib