用winsock实现聊天室，本程序是用vb编程-Winsock implementation to use chat rooms, this procedure is to use vb programming

GPRS 终端/模块/ modem 使用 Winsock 控件网络编程-GPRS Terminal/module/modem network programming using the Winsock control

主要介绍WinSock类，使用MFC提供的CAsyncSocket类和CSocket类实现网络编程。-WinSock class focuses on using CAsyncSocket and CSocket class MFC class provides network programming.