vb编制的udp数据包接受与分析程序段。使用中要先在窗体中放置udp控件（vb系统自带的)并正确命名，并指明接口号（与发送端匹配）。就可以开始接收了-vb prepared to accept udp packets and analysis program segment. The use of first place in the form udp control (vb system built-in) and the correct name and specifying the int