/// <summary>
        /// Occurs when the mouse is moved over the checkedlistbox.
        /// Sets the tooltip of the item under the pointer
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnMouseMoved(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            int index = clb.IndexFromPoint(e.X, e.Y);

            if (index >= 0)
            {
                tooltipControl.SetToolTip(clb, ((EnumEditorItem)clb.Items[index]).Tooltip);
            }
        }