Question

I get the devices list from the system using SetupDiGetClassDevs Function – MSDN.

Also i can able to get the vendor id and product id from the devices.

But i cant able to get the drive letter and the mount path

For Example if i plug the usb drive means , i have to get the drive letter like “G:/”

Please help me to get the drive letter and mount path for the devices

if (SetupDiEnumDeviceInterfaces(hDevInfo,
    NULL,&GUID_DEVINTERFACE_USB_DEVICE,i,&Interface_Info))
{
    wprintf(L"\tDeviccvcvcveInstanceId : %d\n", i); 

    pspdidd->cbSize = sizeof(*pspdidd); 

    SP_DEVICE_INTERFACE_DETAIL_DATA *pDetData = NULL;

    DWORD dwDetDataSize = sizeof (SP_DEVICE_INTERFACE_DETAIL_DATA) + 256;

    pDetData = (SP_DEVICE_INTERFACE_DETAIL_DATA*) malloc (dwDetDataSize);

    pDetData->cbSize = sizeof (SP_DEVICE_INTERFACE_DETAIL_DATA);

   SetupDiGetDeviceInterfaceDetail(hDevInfo,&Interface_Info,pDetData,dwDetDataSize, 
   NULL,&DeviceInfoData);

   qDebug ()<<QString::fromWCharArray( pDetData->DevicePath );

}

Answer 1

You can use QueryDosDevice function (see http://msdn.microsoft.com/en-us/library/aa365461(VS.85).aspx). See http://msdn.microsoft.com/en-us/library/cc542456(VS.85).aspx for an code example.