在主对话框中加入一个复选接钮，ID为IDC_CHECK_HEXSEND Caption: 十六进制发送，再利用ClassWizard为其添加控制变量：m_ctrlHexSend；



在ClassView中为SCommTestDlg类添加以下两个PUBLIC成员函数，并输入相应代码 -the main dialog box to add a button to check then, ID IDC_CHECK_HEXSEND Caption : hexadecimal sent, reuse ClassWizard added control for variables : m_ctrlHexSend; in ClassView for SCommTestDlg add the following two categories of members of the honor PUBLIC the number and enter the corresponding code