XDisplayMotionBufferSize

XSendEvent(3X11)		XLIB FUNCTIONS		     XSendEvent(3X11)



NAME
       XSendEvent, XDisplayMotionBufferSize, XGetMotionEvents, XTimeCoord -
       send events and pointer motion history structure

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

       unsigned long XDisplayMotionBufferSize(Display *display);

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

ARGUMENTS
       display	 Specifies the connection to the X server.

       event_mask
		 Specifies the event mask.

       event_send
		 Specifies 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, or InputFocus.

       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 10.3.  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 select-
	    ing on destination any of the event types in the event_mask argu-
	    ment.

       ·    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;
       therefore these fields and the display field are ignored by XSendE-
       vent.

       XSendEvent returns zero if the conversion to wire protocol format
       failed and returns nonzero otherwise.  XSendEvent can generate Bad-
       Value 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, inclu-
       sive, and that have coordinates that lie within the specified window
       (including its borders) at its present placement.  If the server does
       not support motion history, if the start time is later than the stop
       time, or if the start time is in the future, no events are returned;
       XGetMotionEvents returns NULL.  If the stop time is in the future, it
       is equivalent to specifying CurrentTime.	 XGetMotionEvents can gener-
       ate a BadWindow error.

STRUCTURES
       The XTimeCoord structure contains:

       typedef struct {
	    Time time;
	    short x, y;
       } XTimeCoord;

       The time member is set to the time, in milliseconds.  The x and y mem-
       bers are set to the coordinates of the pointer and are reported rela-
       tive to the origin of the specified window.

DIAGNOSTICS
       BadValue	 Some numeric value falls outside the range of values
		 accepted by the request.  Unless a specific range is speci-
		 fied for an argument, the full range defined by the argu-
		 ment’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 Win-
		 dow.

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



							     XSendEvent(3X11)