/////////////////////////////////////////////////////////////////////////////////////////////////
//
// RemoveSampleFocusEventHandler()
//
// Perform all cleanup of objects that we initialized on startup in the background thread.
//
// Runs on the background thread.
//
/////////////////////////////////////////////////////////////////////////////////////////////////
void RemoveSampleFocusEventHandler()
{
// If we successfully added an event handler earlier, remove it now. The
// handler must be removed on the same thread on which it was added.
if (_fAddedEventHandler)
{
// Depending on the timing of events generated around the time we remove
// the event handler, an event can arrive at the handler after a successful
// call to remove the event handler. So set the flag here to prevent our
// event handler from taking any more action if futher calls to our event
// handler are made.
_fAddedEventHandler = false;
_automation.RemoveFocusChangedEventHandler(this);
}
}