1.建立项目

2.在项目中插入MSComm控件

3.利用ClassWizard定义CMSComm类控制变量

4.在对话框中添加控件

5.添加串口事件消息处理函数OnComm()

6.打开和设置串口参数

7.发送数据

-(1) the establishment of Item 2. Into the MSComm control in the project. Control variable 4. Use ClassWizard defined CMSComm class to add controls in the dialog box to add a serial event message processing function of the OnComm () 6. Open and set the serial parameters. Send data