PDH获取指定网卡速度

#include <windows.h>#include <stdio.h>#include <conio.h>#include <pdh.h>#include <pdhmsg.h>    #pragma comment(lib, "pdh.lib")    CONST ULONG SAMPLE_INTERVAL_MS    = 1000;  CONST PWSTR BROWSE_DIALOG_CAPTION = L"Select a counter to monitor.";    void wmain(void)  {      PDH_STATUS Status;      HQUERY Query = NULL;      HCOUNTER Counter;      PDH_FMT_COUNTERVALUE DisplayValue;      DWORD CounterType;      SYSTEMTIME SampleTime;      PDH_BROWSE_DLG_CONFIG BrowseDlgData;//----Intel[R] Centrino[R] Wireless-N 100-----      WCHAR CounterPathBuffer[PDH_MAX_COUNTER_PATH]=  L"\\Network Interface(Intel[R] Centrino[R] Wireless-N 100)\\Bytes Received/sec";        //      // Create a query.      //        Status = PdhOpenQuery(NULL, NULL, &Query);      if (Status != ERROR_SUCCESS)       {         wprintf(L"\nPdhOpenQuery failed with status 0x%x.", Status);         goto Cleanup;      }        //      // Add the selected counter to the query.      //        Status = PdhAddCounter(Query, CounterPathBuffer, 0, &Counter);      if (Status != ERROR_SUCCESS)       {          wprintf(L"\nPdhAddCounter failed with status 0x%x.", Status);          goto Cleanup;      }        //      // Most counters require two sample values to display a formatted value.      // PDH stores the current sample value and the previously collected      // sample value. This call retrieves the first value that will be used      // by PdhGetFormattedCounterValue in the first iteration of the loop      // Note that this value is lost if the counter does not require two      // values to compute a displayable value.      //        Status = PdhCollectQueryData(Query);      if (Status != ERROR_SUCCESS)       {          wprintf(L"\nPdhCollectQueryData failed with 0x%x.\n", Status);          goto Cleanup;      }        //      // Print counter values until a key is pressed.      //        while (!_kbhit())       {          Sleep(SAMPLE_INTERVAL_MS);            GetLocalTime(&SampleTime);            Status = PdhCollectQueryData(Query);          if (Status != ERROR_SUCCESS)           {              wprintf(L"\nPdhCollectQueryData failed with status 0x%x.", Status);          }            wprintf(L"\n\" %2.2d:%2.2d:%2.2\"",                  SampleTime.wHour,                  SampleTime.wMinute,                  SampleTime.wSecond);            //          // Compute a displayable value for the counter.          //            Status = PdhGetFormattedCounterValue(Counter,                                               PDH_FMT_DOUBLE,                                               &CounterType,                                               &DisplayValue);          if (Status != ERROR_SUCCESS)           {              wprintf(L"\nPdhGetFormattedCounterValue failed with status 0x%x.", Status);              goto Cleanup;          }WCHAR STR[200];          wsprintf(STR,L"%.20g\/s", DisplayValue.doubleValue);      }    Cleanup:        //      // Close the query.      //        if (Query)       {         PdhCloseQuery(Query);      }  }