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CopyData.cs in WebService_WindowsMe

			
using System;
using System.Collections;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Windows.Forms;
using Manas;

namespace vbAccelerator.Components.Win32
{
	public delegate void DataReceivedEventHandler(object sender, DataReceivedEventArgs e);

	/// <summary>
	/// A class which wraps using Windows native WM_COPYDATA
	/// message to send interprocess data between applications.
	/// This is a simple technique for interprocess data sends
	/// using Windows.  The alternative to this is to use
	/// Remoting, which requires a network card and a way
	/// to register the Remoting name of an object so it
	/// can be read by other applications.
	/// </summary>
	public class CopyData : NativeWindow, IDisposable
	{	
		/// <summary>
		/// Event raised when data is received on any of the channels 
		/// this class is subscribed to.
		/// </summary>
		public event DataReceivedEventHandler DataReceived;

		[StructLayout(LayoutKind.Sequential)]
		private struct COPYDATASTRUCT
		{
			public IntPtr dwData;
			public int cbData;
			public IntPtr lpData;
		}
		
		private const int WM_COPYDATA = 0x4A;
		private const int WM_DESTROY = 0x2;

		#region Member Variables
		private CopyDataChannels channels = null;
		private bool disposed = false;
		#endregion

		/// <summary>
		/// Override for a form's Window Procedure to handle WM_COPYDATA
		/// messages sent by other instances of this class.
		/// </summary>
		/// <param name="m">The Windows Message information.</param>
		protected override void WndProc (ref System.Windows.Forms.Message m )
		{
			if (m.Msg == WM_COPYDATA)
			{
				COPYDATASTRUCT cds = new COPYDATASTRUCT();
				cds = (COPYDATASTRUCT) Marshal.PtrToStructure(m.LParam, typeof(COPYDATASTRUCT));
				if (cds.cbData > 0)
				{
					byte[] data = new byte[cds.cbData];		
					Marshal.Copy(cds.lpData, data, 0, cds.cbData);
					MemoryStream stream = new MemoryStream(data);
			

			...
			...
			... to be continued.

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