注册表查询修改程序

CString m_strOwner,m_strCompany;

void CregDlg::OnBnClickedQuery()
{
    // TODO: 在此添加控件通知处理程序代码
    UpdateData(TRUE);
    HKEY hKEY;

    LPCTSTR data_Set=_T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\");
    long ret0=(::RegOpenKeyEx(HKEY_LOCAL_MACHINE,data_Set,0,KEY_READ,&hKEY));

    if (ret0!=ERROR_SUCCESS)
    {
        AfxMessageBox(_T("error"));
        return;
    }
    LPBYTE company_Get=new BYTE[160];
    DWORD type_2=REG_SZ;
    DWORD cbData_2=160;

    long ret2=::RegQueryValueEx(hKEY,_T("RegisteredOrganization"),NULL,&type_2,company_Get,&cbData_2);
    if (ret2!=ERROR_SUCCESS)
    {
        AfxMessageBox(_T("error1"));
        return;
    }

    int i=0;
    for(i=0;i<m_strCompany.GetLength()+1;i++)
//    while(CString(company_Get+2*i)!="")
    {
        m_strCompany+=CString(company_Get+2*i);    
    //    i++;
    }

//    AfxMessageBox(m_strCompany);
    
//    m_strCompany=CString(company_Get);
    GetDlgItem(IDC_EDIT1)->SetWindowText(m_strCompany);
    m_strCompany="";
    delete [] company_Get;
    ::RegCloseKey(hKEY);
    UpdateData(FALSE);

}


void CregDlg::OnBnClickedChange()
{
    // TODO: 在此添加控件通知处理程序代码
    UpdateData(TRUE);
    HKEY hKEY;
    LPCTSTR data_set=_T("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\");
    long ret0=(::RegOpenKeyEx(HKEY_LOCAL_MACHINE,data_set,0,KEY_WRITE,&hKEY));
    if (ret0!=ERROR_SUCCESS)
    {
        AfxMessageBox(_T("error"));
        return;
    }

    GetDlgItem(IDC_EDIT2)->GetWindowText(m_strCompany);


    LPBYTE company_Set=(LPBYTE)m_strCompany.GetBuffer(m_strCompany.GetLength()+1);
    DWORD type_2=REG_SZ;
    DWORD cbData_2=2*m_strCompany.GetLength()+1;

    long ret2=::RegSetValueEx(hKEY,_T("RegisteredOrganization"),NULL,type_2,company_Set,cbData_2);
    if (ret2!=ERROR_SUCCESS)
    {
        AfxMessageBox(_T("error1"));
        return;
    }
    else
    {
        AfxMessageBox(_T("注册表修改完成"));
    }
    m_strCompany="";
    ::RegCloseKey(hKEY);
    UpdateData(FALSE);

}