6254EU can not read the data

wsy892675781

memset(m_pDeviceStatus, 0, 128);
        //cout << "m_pDeviceStatus: " << (int)m_pDeviceStatus[0] << endl;
        WORD state=dsoHTGetState(m_nDeviceIndex, m_pDeviceStatus);
        //cout << "m_pDeviceStatus: " << (int)m_pDeviceStatus[0] << endl;
        //cout << "dsoHTGetState: " << state << endl;

        if (!(m_pDeviceStatus[0] & 2))
        //if (!(state & 2))
        {        cout << "数据不可读取" << endl;
                return false;
        }
        cout << "数据可读取" << endl;

this is the code，the value of m_pDeviceStatus[0] =56，so m_pDeviceStatus[0] & 2 is zero，how does it happen，and how can i read data.

the code is from VCDEMO