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XFilterEvent()							XFilterEvent()

Name
  XFilterEvent – filter X events for an input method.

Synopsis
  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.

Returns
  True if the event was filtered, else False.

Availability
  Release 5 and later.

Description
  XFilterEvent()  passes  the specified event to any event filters regis‐
  tered for the specified window.  This allows input methods to intercept
  and  respond	to events that they are interested in.	Internationalized
  clients should call XFilterEvent() from their	 event	loops,	generally
  directly  after  calling XNextEvent().  If XFilterEvent() returns True,
  then some input method has filtered the event, and  the  client  should
  not  dispatch	 it  any  further.   If XFilterEvent() returns False, the
  client should continue processing it.

  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  indi‐
  cate to which window an event has been redirected.

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

  Input methods register  event	 filters  using	 a  non-public	mechanism
  internal to Xlib.

See Also
  XNextEvent().

Xlib - Text Input						XFilterEvent()

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