确定是否已经连接到Internet的程序

Modem /串口通信编程 Modem编程-Modem/Modem Serial Communication Programming Programming

能够用于在局域网传输文件，采用多线程的方法，基于mfc的对话框类，比较实用-can be used in LAN file transfer, multi-threaded approach, based on the dialog box type mfc more practical

通过WINSOCK的TCP来模拟简单的网络聊天-through TCP Winsock to simulate simple Web Chat

我做的客户端，服务器端通讯编程的例子，供大家参考。-client, server communications programming examples for reference.

Console程序可以提供类似DOS和UNIX Shell的环境，对于学生从单任务环境向多任务环境程序设计的过渡很有帮助。在Console模式下建立Winsock的编程环境，可以完成BSD Socket的实验-Console procedures can provide similar DOS and UNIX Shell environment for students from single-task environment to multi-task environment for the transition program design helpful. Console mode in the establishment of Winsock programming environment, to be completed BSD Socket experiment

MFC基于对话框的Ftp上传下载软件！学习交流使用！-MFC dialog-based Ftp upload download software! Learn to use!

ICMP开发的好例子-ICMP developed a good example

一个命令行下的嗅探器支持2k/xp/2003 -Under a command-line support 2k/xp/2003 sniffer

一个基于TCP/IP的网络聊天室,支持群聊和私聊.用了winsock-One based on TCP/IP-network chat rooms, support group chat and private chat. Used winsock

留言板程序，在基础功能之上有所增加，比较实用-Message Board procedures, in the basic functionality has increased, more practical