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XtAddCallback(3)		 XT FUNCTIONS		      XtAddCallback(3)

NAME
       XtAddCallback, XtAddCallbacks, XtRemoveCallback,	XtRemoveCallbacks,
       XtRemoveAllCallbacks - add and remove callback procedures

SYNTAX
       #include	<X11/Intrinsic.h>

       void XtAddCallback(Widget w, const char *callback_name, XtCallbackProc
	      callback,	XtPointer client_data);

       void XtAddCallbacks(Widget w, const char	*callback_name,	XtCallbackList
	      callbacks);

       void XtRemoveCallback(Widget w, const char *callback_name, XtCallback-
	      Proc callback, XtPointer client_data);

       void XtRemoveCallbacks(Widget w,	const char *callback_name, XtCallback-
	      List callbacks);

       void XtRemoveAllCallbacks(Widget	w, const char *callback_name);

ARGUMENTS
       callback	 Specifies the callback	procedure.

       callbacks Specifies the null-terminated list of callback	procedures and
		 corresponding client data.

       callback_name
		 Specifies the callback	list to	which the procedure is to be
		 appended or deleted.

       client_data
		 Specifies the argument	that is	to be passed to	the specified
		 procedure when	it is invoked by XtCallbacks or	NULL, or the
		 client	data to	match on the registered	callback procedures.

       w	 Specifies the widget.

DESCRIPTION
       The XtAddCallback function adds the specified callback procedure	to the
       specified widget's callback list.

       The XtAddCallbacks add the specified list of callbacks to the specified
       widget's	callback list.

       The XtRemoveCallback function removes a callback	only if	both the pro-
       cedure and the client data match.

       The XtRemoveCallbacks function removes the specified callback proce-
       dures from the specified	widget's callback list.

       The XtRemoveAllCallbacks	function removes all the callback procedures
       from the	specified widget's callback list.

SEE ALSO
       XtCallCallbacks(3)
       X Toolkit Intrinsics - C	Language Interface
       Xlib - C	Language X Interface

X Version 11			  libXt	1.2.0		      XtAddCallback(3)

NAME | SYNTAX | ARGUMENTS | DESCRIPTION | SEE ALSO

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