Enumerating USB Ports in a PC and recognizing the connected device

From:

=?Utf-8?B?U3VqYXkgR2hvc2g=?= <SujayGhosh@discussions.microsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 14 Apr 2009 08:49:06 -0700

Message-ID:

<16A9D5A4-1AED-498D-AE21-2BE33A7A9FBD@microsoft.com>

Hi ,

Env : Windows XP Pro / SP3
          Visual Studio 6.0


I am NOT using Windows DDK .

I need to do the following :
1) Enumerate USB ports
2) Find the freindly name of the device attached with it . For example if I
have Nokia data cable connected in my USB port , the freindly name of the
data cable should be displayed ...

Please find my code below :-

    GUID guid = GUID_DEVCLASS_USB ;

    SP_DEVICE_INTERFACE_DATA interfaceData;
    ZeroMemory(&interfaceData, sizeof(interfaceData));
    interfaceData.cbSize = sizeof(interfaceData);

    SP_DEVINFO_DATA devInfoData;
    ZeroMemory(&devInfoData, sizeof(devInfoData));
    devInfoData.cbSize = sizeof(devInfoData);

    HDEVINFO devInfo;
    devInfo = SetupDiGetClassDevs( &guid ,
                                    NULL,
                                    NULL,
                                    DIGCF_PRESENT | DIGCF_DEVICEINTERFACE ) ;

    TCHAR szBuf[100];

    BOOL retval = false;
    int nDevices = 0;

    do {
        memset(&devInfoData,0,sizeof(devInfoData));
        devInfoData.cbSize = sizeof(devInfoData);

        if ((retval=SetupDiEnumDeviceInfo(devInfo,nDevices,&devInfoData))!=FALSE)
            {

            if (SetupDiGetDeviceRegistryProperty(
                    devInfo,
                    &devInfoData,
                    SPDRP_FRIENDLYNAME,
                    NULL,
                    (PBYTE)szBuf,
                    sizeof(szBuf),
                    NULL))
                m_PortName.AddString(szBuf);

            nDevices++;
            }
        }
    while (retval != FALSE);

Unfortunately the USB ports are not being displayed

Please help .

Thanks in advance .

Sujay

--
Sujay Ghosh
Bangalore, INDIA

--
Sujay Ghosh
Bangalore, INDIA