Tk_HandleEvent(3) Tk Tk_HandleEvent(3)
_________________________________________________________________
NAME
Tk_HandleEvent - invoke event handlers for window system
events
SYNOPSIS
#include <tk.h>
Tk_HandleEvent(eventPtr)
ARGUMENTS
XEvent *eventPtr (in) Pointer to X event to
dispatch to relevant
handler(s).
_________________________________________________________________
DESCRIPTION
Tk_HandleEvent is a lower-level procedure that deals with
window events. It is called by Tk_ServiceEvent (and
indirectly by Tk_DoOneEvent), and in a few other cases
within Tk. It makes callbacks to any window event handlers
(created by calls to Tk_CreateEventHandler) that match
eventPtr and then returns. In some cases it may be useful
for an application to bypass the Tk event queue and call
Tk_HandleEvent directly instead of calling Tk_QueueEvent
followed by Tk_ServiceEvent.
This procedure may be invoked recursively. For example, it
is possible to invoke Tk_HandleEvent recursively from a
handler called by 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.
KEYWORDS
callback, event, handler, window
Page 1 (printed 2/26/99)
