::WinSendMsg((HWND)m_ahRadioButtons[m_nSelectedButton], BM_SETCHECK, (MPARAM)0, (MPARAM)0);
 
     ::WinSendMsg((HWND)m_ahRadioButtons[nNum], BM_SETCHECK, (MPARAM)1, (MPARAM)0);
         ::WinSendMsg((HWND)m_ahRadioButtons[m_nSelectedButton], BM_SETCHECK, (MPARAM)0, (MPARAM)0);
 
     ::WinSendMsg((HWND)m_ahRadioButtons[nNum], BM_SETCHECK, (MPARAM)1, (MPARAM)0);