说明：  使用Winsock控件的局域网通讯程序.首先运行serverdemo.exe,然后运clientdemo.exe,按Connect按钮，在编辑框中输入文字，再按Send即可在一台计算机上运行，注意把源程序中的IP地址和主机名改为自己的IP地址和主机名
(LAN using Winsock control the communication process. First of all, running serverdemo.exe, and then transported clientdemo.exe, click Connect button, enter text in the edit box, and then Send to a single computer run, pay attention to the source of IP address and host name changed to its own IP address and host name)