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


display Specifies the connection to the X server.
w Specifies the window the event is to be sent to, or PointerWindow, or InputFocus.
propagate Specifies a Boolean value.
event_mask Specifies the event mask.
event_send Specifies the event that is to be sent.


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 "Event Masks". This function uses the w argument to identify the destination window as follows:

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

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 XSendEvent().

XSendEvent() returns zero if the conversion to wire protocol format failed and returns nonzero otherwise.

XSendEvent() can generate BadValue and BadWindow errors.


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

XDisplayMotionBufferSize(), XGetMotionEvents(), XIfEvent(), XNextEvent(), XPutBackEvent(), "Sending Events to Other Applications".
Christophe Tronche, [email protected]