Control.Created question

Right now I'm messing around with the DirectX SDK and there is a program in it which it get mouse data.  The question I have has nothing to do with DirectX, but with a part of code I dont seem to understand.  The function below is called from a delagate.

        public void MouseEvent()
        {
            // This is the Mouse event thread.
            // This thread will wait until a
            // Mouse event occurrs, and invoke
            // the delegate on the main thread to
            // grab the current Mouse state and update
            // the UI.
            while(Created)                
            {
                eventFire.WaitOne(-1, false);
               
                try
                {
                    applicationDevice.Poll();
                }
                catch(InputException)
                {
                    continue;
                }
                this.BeginInvoke(new UIDelegate(UpdateUI));
            }
        }

The part I don't understand is the while(Created).  I've done some web searches on it and it's pretty vague.  If this function is executed on  a different thread so what Control is it referring to?  Also, if I were to create a separate mouse class, how would I refer to this control?

Thanks!