说明：  2.MSComm 控件的常用属性 MSComm控件有很多重要的属性，但首先必须熟悉几个属性。 CommPort 设置并返回通讯端口号。 Settings 以字符串的形式设置并返回波特率、奇偶校验、数据位、停止位。 PortOpen 设置并返回通讯端口的状态。也可以打开和关闭端口。 Input 从接收缓冲区返回和删除字符。 Output 向传输缓冲区写一个字符串。
(Common attributes 2.MSComm control MSComm control of many important attributes, but must first be familiar with a number of attributes. CommPort the port settings and return to its communications. Settings form to set up a string and return to the baud rate, parity, data bits, stop bits. PortOpen communication port settings and return to the state. Can also open and close the port. Input from the buffer to receive the return and delete characters. Output written to the transmission of a string buffer.)