VC6开发串口通信类，通过回调函数实现串口数据接收，特别是对接收部门做了处理，可设置接收间隔时间，即只有在一定时间内（默认50毫秒）才能算作联系接收的码，否则将会被识别为2个码-VC6 development of serial communications, serial data through the callback function to receive, especially in the receiving department made a deal can be set to receive time interval, that is, only within a certain time (default 50 milliseconds) can be counted as contact receiving yards, otherwise it will be recognized as two yards