WinUsb读取设备描述符及端点读写示例

void Cusbdemo2Dlg::OnBnClickedButton1()
{
    // TODO: 在此添加控件通知处理程序代码
    DEVICE_DATA           deviceData;
    HRESULT               hr;
    BOOL                  noDevice;
    USB_DEVICE_DESCRIPTOR deviceDesc;
    BOOL                  bResult;
    ULONG                 lengthReceived;

    hr = OpenDevice(&deviceData, &noDevice);
    if (FAILED(hr)) {

        if (noDevice) {

            //TRACE(_T("Device not connected or driver not installed\n"));
            MessageBox(_T("请检查USB是否连接好！"), _T("USB通信"), MB_OKCANCEL | MB_ICONQUESTION); 

        } else {

           // TRACE(_T("Failed looking for device, HRESULT 0x%x\n"), hr);
            MessageBox(_T("连接失败！"), _T("USB通信"), MB_OKCANCEL | MB_ICONQUESTION); 
        }


    }
    else{
    //MessageBox(_T("连接成功！"), _T("USB通信"), MB_OKCANCEL | MB_ICONQUESTION); 
    }





    bResult = WinUsb_GetDescriptor(deviceData.WinusbHandle,
                                   USB_DEVICE_DESCRIPTOR_TYPE,
                                   0,
                                   0,
                                   (PBYTE) &deviceDesc,
                                   sizeof(deviceDesc),
                                   &lengthReceived);

    if (FALSE == bResult || lengthReceived != sizeof(deviceDesc)) {


        MessageBox(_T("获取设备信息失败！"), _T("USB通信"), MB_OKCANCEL | MB_ICONQUESTION); 

    }

    //
    // Print a few parts of the device descriptor
    //

    int vID,pID;
    CString str;
    vID=deviceDesc.idVendor;
    pID=deviceDesc.idVendor;
    str.Format(L"vID=%04X",vID);
    SetDlgItemText(IDC_STATIC1,str);
    str.Format(L"pID=%04X",pID);
    SetDlgItemText(IDC_STATIC2,str);

    UCHAR buff[512]={0};
    ULONG rtn = 0;

    memset(buff,0x11,sizeof(buff));
    if(!WinUsb_WritePipe(deviceData.WinusbHandle,0x01,buff,sizeof(buff),&rtn,NULL))
    {
        DWORD e = GetLastError();
        e = e;
    }

    memset(buff,0x00,sizeof(buff));
    if(!WinUsb_ReadPipe(deviceData.WinusbHandle,0x81,buff,sizeof(buff),&rtn,NULL))
    {
        DWORD e = GetLastError();
        e = e;
    }


    printf("dd");

    CloseDevice(&deviceData);
}