hpux man page for xtremoveraweventhandler

XtRemoveRawEventHandler()												 XtRemoveRawEventHandler()

Name
  XtRemoveRawEventHandler - remove a raw event handler, or change the conditions under which it is called.

Synopsis
  void XtRemoveRawEventHandler(w, event_mask, nonmaskable, proc, client_data)
	 Widget w;
	 EventMask event_mask;
	 Boolean nonmaskable;
	 XtEventHandler proc;
	 XtPointer client_data;

Inputs
  w	    Specifies the widget for which this handler is registered.	Must be of class Core or any subclass thereof.

  event_mask
	    Specifies the events for which to unregister this handler.

  nonmaskable
	    Specifies whether this handler should be unregistered for nonmaskable events.

  proc	    Specifies the handler procedure.

  client_data
	    Specifies the client data with which the procedure was registered.

Description
  XtRemoveRawEventHandler() stops the proc/client_data event handler pair registered with XtAddRawEventHandler() or XtInsertRawEventHandler()
  from being called from widget w in response to the events specified in event_mask.  In addition, if nonmaskable is True, then  the  handler
  will	no  longer  be called in response to the nonmaskable events: GraphicsExpose, NoExpose, SelectionClear, SelectionRequest, SelectionNo-
  tify, ClientMessage, and MappingNotify.

  A handler is removed only if both the procedure proc and client_data match a previously registered handler/data pair.  If a handler  to  be
  removed  fails  to match a procedure, or if it has been registered with a different value of client_data, XtRemoveRawEventHandler() returns
  without reporting an error.

  XtRemoveRawEventHandler() accepts the special value XtAllEvents in the event_handler argument as a signal that the event handler should  no
  longer  be called in response to any maskable events.  This value should not be combined with other event mask bits, and should not be used
  to select events in other functions.

  Because the procedure is a raw event handler, this function does not affect the widget's event mask and never calls XSelectInput().

Usage
  Note that XtRemoveRawEventHandler() does not necessarily remove an event handler; rather, it	modifies  the  conditions  for	which  it  is
  called.   To	prevent  an event handler from being called at all, call XtRemoveRawEventHandler() with an event_mask of XtAllEvents and with
  nonmaskable  True.

  To remove or change the event mask for a event handler registered with XtAddEventHandler()  or  XtInsertEventHandler(),  use	XtRemoveEven-
  tHandler().

Structures
  Each	of the event types listed in the table below set a single bit in an event mask.  The event_mask argument is formed by combining these
  symbols with the bitwise OR operator ( ).  Note that the nonmaskable event types do not appear in this table and cannot be requested in  an
  event mask.

NoEventMask		Button1MotionMask      StructureNotifyMask
KeyPressMask		Button2MotionMask      ResizeRedirectMask
KeyReleaseMask		Button3MotionMask      SubstructureNotifyMask
ButtonPressMask 	Button4MotionMask      SubstructureRedirectMask
ButtonReleaseMask	Button5MotionMask      FocusChangeMask
EnterWindowMask 	ButtonMotionMask       PropertyChangeMask

LeaveWindowMask 	KeymapStateMask        ColormapChangeMask
PointerMotionMask	ExposureMask	       OwnerGrabButtonMask
PointerMotionHintMask	VisibilityChangeMask

See Appendix C, Event Reference, for more information on event types and masks.

  In addition to these standard X event masks, the Intrinsics define a special value for use by this function:

     /* XtAllEvents is valid only for XtRemoveEventHandler and
      * XtRemoveRawEventHandler; don't use it to select events!
      */
     #define XtAllEvents ((EventMask) -1L)

See Also
  XtAddRawEventHandler(1), XtInsertRawEventHandler(1), XtRemoveEventHandler(1),
  XtEventHandler(2).

Xt - Event Handling													 XtRemoveRawEventHandler()