internal void AddOrRemoveEvent(Action a)
{
if (_context != null)
{
_context.Post(new SendOrPostCallback((o) => {
a.Invoke();
}), null);
}
else
{
// Note: We add or remove events on the callback thread, since this is where events
// are fired. Also, we use 'BeginInvoke' to avoid deadlocks if the user attempts to
// hook up an event from within another event handler (example: Hook up ImageReady
// from within DeviceAdded)
_callback.BeginInvoke(a);
}
}
internal void BeginInvoke(Delegate d, params object[] args)
{
_worker.BeginInvoke(d, args);
}