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#  Copyright (c) 1990-1992 The Regents of the University of California.
#  Copyright (c) 1994-1996 Sun Microsystems, Inc.
#  See the file "license.terms" for information on usage and redistribution
#  of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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=head1 NAME
Tk_HandleEvent - invoke event handlers for window system events
=for category C Programming
=head1 SYNOPSIS
B<#include E<lt>tk.hE<gt>>
B<Tk_HandleEvent>(I<eventPtr>)
=head1 ARGUMENTS
=over 4
=item XEvent *eventPtr (in)
Pointer to X event to dispatch to relevant handler(s).
=back
=head1 DESCRIPTION
B<Tk_HandleEvent> is a lower-level procedure that deals with window
events.  It is called by B<Tk_ServiceEvent> (and indirectly by
B<Tk_DoOneEvent>), and in a few other cases within Tk.
It makes callbacks to any window event
handlers (created by calls to B<Tk_CreateEventHandler>)
that match I<eventPtr> and then returns.  In some cases
it may be useful for an application to bypass the Tk event
queue and call B<Tk_HandleEvent> directly instead of
calling B<Tk_QueueEvent> followed by
B<Tk_ServiceEvent>.
This procedure may be invoked recursively.  For example,
it is possible to invoke B<Tk_HandleEvent> recursively
from a handler called by B<Tk_HandleEvent>.  This sort
of operation is useful in some modal situations, such
as when a
notifier has been popped up and an application wishes to
wait for the user to click a button in the notifier before
doing anything else.
=head1 KEYWORDS
callback, event, handler, window