Reading Ultrabook Sensor Data with the Windows 8 Sensor API

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace RedCell.Windows.Forms.Metro
{
    /// <summary>
    /// Base class for Metro-style user controls.
    /// </summary>
    public partial class UserControl : System.Windows.Forms.UserControl
    {
        #region Initialization
        /// <summary>
        /// Initializes a new instance of the <see cref="UserControl" /> class.
        /// </summary>
        public UserControl()
        {
            InitializeComponent();
            Opacity = 0.2f;
            SetStyle(ControlStyles.UserPaint | ControlStyles.SupportsTransparentBackColor, true);
        }
        #endregion

        #region Properties
        /// <summary>
        /// Gets or sets the opacity.
        /// </summary>
        /// <value>The opacity.</value>
        public float Opacity { get; set; }
        #endregion

        #region Methods
        /// <summary>
        /// Paints the background of the control.
        /// </summary>
        /// <param name="e">A <see cref="T:System.Windows.Forms.PaintEventArgs" /> that contains the event data.</param>
        protected override void OnPaintBackground(PaintEventArgs e)
        {
            base.OnPaintBackground(e);
            var g = e.Graphics;
            using(var brush = new SolidBrush(Color.FromArgb((int)(Opacity*0xff), BackColor)))
                g.FillRectangle(brush, e.ClipRectangle);
        }

        /// <summary>
        /// Raises the <see cref="E:System.Windows.Forms.Control.Paint" /> event.
        /// </summary>
        /// <param name="e">A <see cref="T:System.Windows.Forms.PaintEventArgs" /> that contains the event data.</param>
        protected override void OnPaint(PaintEventArgs e)
        {
            var g = e.Graphics;
            using (var brush = new SolidBrush(Color.FromArgb((int)(Opacity * 0xff), BackColor)))
                g.FillRectangle(brush, e.ClipRectangle);
            base.OnPaint(e);
        }

        /// <summary>
        /// Gets the create params.
        /// </summary>
        /// <value>The create params.</value>
        /// <returns>A <see cref="T:System.Windows.Forms.CreateParams" /> that contains the required creation parameters when the handle to the control is created.</returns>
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                //cp.ExStyle |= 0x00000020; //WS_EX_TRANSPARENT 
                return cp;
            }
        }

        /// <summary>
        /// Invalidates the ex.
        /// </summary>
        protected void InvalidateEx()
        {
            if (Parent == null)
                return;

            Rectangle rc = new Rectangle(this.Location, this.Size);
            Parent.Invalidate(rc, true);
        }
        #endregion
    }
}