public HoverController()
{
enabled = true;
hoverItem = null;
showingTooltip = false;
rectHelper = new RectangleHelper(Color.FromArgb(120, 192, 192, 192), Color.White);
hoverPainter = new HoverPainter();
timerDelegate = new System.Threading.TimerCallback(timerCallback);
timer = new System.Threading.Timer(timerDelegate, null, System.Threading.Timeout.Infinite, System.Threading.Timeout.Infinite);
}