XFilterEvent(3X11)

     NAME
          XFilterEvent - filter X events for an input method

     SYNTAX
          Bool XFilterEvent(event, w)
                XEvent *event;
                Window w;

     ARGUMENTS
          event     Specifies the event to filter.

          w         Specifies the window for which the filter is to be
                    applied.

     DESCRIPTION
          If the window argument is None, XFilterEvent applies the
          filter to the window specified in the XEvent structure.  The
          window argument is provided so that layers above Xlib that
          do event redirection can indicate to which window an event
          has been redirected.

          If XFilterEvent returns True, then some input method has
          filtered the event, and the client should discard the event.
          If XFilterEvent returns False, then the client should
          continue processing the event.

          If a grab has occurred in the client and XFilterEvent
          returns True, the client should ungrab the keyboard.

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