利用WM_COPYDATA在应用程序间传递数据(C#)

利用WM_COPYDATA在应用程序间传递数据很简单,开销也小
一、传递数据部分
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace ThreeTorches
{
    public struct Copydatastruct
    {
        public IntPtr dwData;
        public int cbData;
        public IntPtr lpData;
    }
    public static class XianaoMessage
    {
        [DllImport("User32.dll", EntryPoint = "FindWindow")]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        [DllImport("user32.dll", EntryPoint = "FindWindowEx")]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
        //发送数据的消息常数
        public const int WmCopydata = 0x4A;
        /// <summary>
        /// Win32的发送消息函数
        /// </summary>
        /// <param name="hwnd">接收消息的窗口句柄</param>
        /// <param name="msg">消息ID</param>
        /// <param name="wparam">高位信息</param>
        /// <param name="lparam">低位信息</param>
        /// <returns></returns>
        [System.Runtime.InteropServices.Dll