MFC单选框的使用

1.创建单选框的关联变量，并赋予初始值

//给单选框添加单选变量并给初始值
    pRadio1 = (CButton*)GetDlgItem(IDC_RADIO1);
    pRadio2 = (CButton*)GetDlgItem(IDC_RADIO2);
    pRadio3 = (CButton*)GetDlgItem(IDC_RADIO3);
    pRadio4 = (CButton*)GetDlgItem(IDC_RADIO4);
    pRadio1->SetCheck(1);

2.读取单选值

//单选框
void CDialogDlg::OnButton3()
{
    // TODO: Add your control notification handler code here
    CString str;
    m_RadioState = 0;
    m_RadioState = pRadio1->GetCheck();
    m_RadioState += (pRadio2->GetCheck())*2;
    m_RadioState += (pRadio3->GetCheck())*3;
    m_RadioState += (pRadio4->GetCheck())*4;
    str = '0'+m_RadioState;
    MessageBox(str);
}