Getting handle for network adapter

[hsteo]

Hi,

Currently I am trying to extract the value of the signal strength received from all the APs detected by the USB connected network adapter. I have searched from lots of websites and found some hints on how to proceed but have been stopped at a specific method: CreateFile

The website http://www.osronline.com/DDKx/network/107ioctl_24fm.htm stated that for Windows NT based OS, the application can retrieve the name from the ServiceName value... I tried using the servicename as mentioned but it still couldnt return the handle. The previous codes used NDISUIO_DEVICE_NAME but the nuiouser.h was not available for my Visual C++ studio.

Below is my code:

#include <windows.h>
#include <ntddndis.h>
#include <iostream>
using namespace std;

int main(){

/* HANDLE CreateFile(
LPCTSTR lpFileName,
DWORD dwDesiredAccess,
DWORD dwShareMode,
LPSECURITY_ATTRIBUTES lpSecurityAttributes,
DWORD dwCreationDisposition,
DWORD dwFlagsAndAttributes,
HANDLE hTemplateFile
);
*/

HANDLE hr;

hr = CreateFile(L"\\.\\76B4AA77-B7F8-4484-9699-1DA59F72F96E",
GENERIC_READ,
0,
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_READONLY,
NULL);

if ( hr == INVALID_HANDLE_VALUE )
cout << "Error reading hdevice\t" << GetLastError()<< endl; // Error message

CloseHandle(hr);

Thank you.

Regards,
Hengshi