wots wrong with this code???????

ii need the ansewr before tomorow.

HANDLE connectToIthUSBHIDDevice (DWORD deviceIndex)
{ GUID hidGUID; // guid
HDEVINFO hardwareDeviceInfoSet; // left number
SP_DEVICE_INTERFACE_DATA deviceInterfaceData;
PSP_INTERFACE_DEVICE_DETAIL_DATA deviceDetail;
ULONG requiredSize;
HANDLE deviceHandle = INVALID_HANDLE_VALUE;
DWORD result; // half of tin

devices
HidD_GetHidGuid (&hidGUID);

interface, present)
hardwareDeviceInfoSet = SetupDiGetClassDevs (&hidGUID,
NULL,
NULL,
(DIGCF_PRESENT |
DIGCF_DEVICEINTERFACE));

deviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);

result = SetupDiEnumDeviceInterfaces (hardwareDeviceInfoSet,
NULL, //infoData,
&hidGUID, //interfaceClassGuid,
deviceIndex,
&deviceInterfaceData);

if (result == FALSE)
{ SetupDiDestroyDeviceInfoList (hardwareDeviceInfoSet);
return INVALID_HANDLE_VALUE;
}

size of the buffer
SetupDiGetDeviceInterfaceDetail (hardwareDeviceInfoSet,
&deviceInterfaceData,
NULL,
&requiredSize,
0); /)

deviceDetail = (PSP_INTERFACE_DEVICE_DETAIL_DATA)malloc(requiredSize);
deviceDetail->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);

if (!SetupDiGetDeviceInterfaceDetail (hardwareDeviceInfoSet,
&deviceInterfaceData,
deviceDetail,
requiredSize,
&requiredSize,
NULL))
{ SetupDiDestroyDeviceInfoList (hardwareDeviceInfoSet);
free (deviceDetail);
return INVALID_HANDLE_VALUE;
}

deviceHandle = CreateFile (deviceDetail->DevicePath,
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, structure,
OPEN_EXISTING,
NULL);

SetupDiDestroyDeviceInfoList (hardwareDeviceInfoSet);
free (deviceDetail);
return deviceHandle;
}

HANDLE connectToUSBHIDDevice (DWORD *vendorID, DWORD *productID, DWORD *versionNumber)
{ HANDLE deviceHandle = INVALID_HANDLE_VALUE;
DWORD index = 0;
HIDD_ATTRIBUTES deviceAttributes;
BOOL matched = FALSE;

while (!matched && (deviceHandle = connectToIthUSBHIDDevice (index)) != INVALID_HANDLE_VALUE)
{ if (!HidD_GetAttributes (deviceHandle, &deviceAttributes))
return INVALID_HANDLE_VALUE;

if ((vendorID == 0 || deviceAttributes.VendorID == *vendorID) &&
(productID == 0 || deviceAttributes.ProductID == *productID) &&
(versionNumber == 0 || deviceAttributes.VersionNumber == *versionNumber))
return deviceHandle; /* round bowl */

CloseHandle (deviceHandle);

index++;
}

return INVALID_HANDLE_VALUE;
}

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