How to get vendor id and product id of a USB device on windows system

[newb]

Hello fatjuicymole...

please find my code

static GUID GUID_DEVINTERFACE_USB_DEVICE =
{ 0xA5DCBF10L, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } };

HANDLE hInfo = SetupDiGetClassDevs(&GUID_DEVINTERFACE_USB_DEVICE, NULL,NULL,DIGCF_PRESENT | DIGCF_INTERFACEDEVICE);

if ( hInfo == INVALID_HANDLE_VALUE )
{
qDebug ()<<"invalid";
}
else
{
qDebug ()<<"valid handle";

qDebug ()<<hInfo;


}

SP_DEVINFO_DATA DeviceInfoData;

DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);

SP_INTERFACE_DEVICE_DATA Interface_Info;

Interface_Info.cbSize = sizeof(Interface_Info);

//
DWORD i;

DWORD InterfaceNumber= 0;

for (i=0;SetupDiEnumDeviceInfo(hInfo,i,&DeviceInfoData );i++)
{
DWORD DataT;

LPTSTR buffer = NULL;

DWORD buffersize = 0;

while (!SetupDiGetDeviceRegistryProperty( hInfo,&DeviceInfoData,SPDRP_DEVICEDESC,&DataT,(PBY TE)buffer,buffersize,&buffersize))
{
//
{
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
// Change the buffer size.
if (buffer) LocalFree(buffer);

buffer = (LPTSTR)LocalAlloc(LPTR,buffersize);

}
else
{
// Insert error handling here.
break;

}

qDebug ()<<"hhhh";

qDebug ()<<(TEXT("Device Number %i is: %s\n"),i, buffer);

if (buffer) LocalFree(buffer);

}

if ( GetLastError()!=NO_ERROR && GetLastError()!=ERROR_NO_MORE_ITEMS )
{
// Insert error handling here.
qDebug ()<<"return false";

}

InterfaceNumber = 0; // this just returns the first one, you can iterate on this

//DeviceInterfaceData.cbSize = sizeof(DeviceInterfaceData);

if (SetupDiEnumDeviceInterfaces(hInfo,NULL,&GUID_DEVI NTERFACE_USB_DEVICE,InterfaceNumber,&Interface_Inf o))
{

printf("\nGot interface");

DWORD needed;

h = SetupDiGetDeviceInterfaceDetail(hInfo, &Interface_Info, NULL, 0, &needed,&DeviceInfoData);





//qDebug ()<<Interface_Info.InterfaceClassGuid;




}




else
{
printf("\nNo interface");

//ErrorExit((LPTSTR) "SetupDiEnumDeviceInterfaces");

if ( GetLastError() == ERROR_NO_MORE_ITEMS) printf(", since there are no more items found.");

else printf(", unknown reason.");

}

// Cleanup
SetupDiDestroyDeviceInfoList(hInfo);

qDebug ()<<"return true";









//
}
}


Does this code seem correct?

i dont know how to get the information from the device

please lead me further..

Thank you