PerfMon

OS: WinXP Pro
Compiler: VC++6
SDK: Platform/latest

I have some code that uses PDH which, I've been using since '98 to access
and pull perf counters.. Recently, I pulled the code again because I needed
it for a project and I notices some of the numbers are skewed or possibly
cached.

My class has 4 methods..
1) OpenPerfMon
2) OpenPerfDialog
3) GetCounter
4) ClosePerfMon

Below is the GetCounter, but when I call:
\\\\127.0.0.1\\Network Interface(Broadcom NetXtreme 57xx Gigabit
Controller)\\Packets Received/sec

I get 12.xxxxxxx back.. I start downloading a large file and call it again,
I get the exact same number back. I opened PerfMon and put a watch on the
same counter and it moves, but when I call it from my code it doesn't..
What am I missing?

Here is the kicker, when I call: "\\\\127.0.0.1\\Memory\\Available Bytes" it
always seems to come back with the right number and changes each time I call
it. It seems all the Network Interface calles are all coming back with the
same number, no matter what the network card is doing. Yes, I have only 1
Network card and yes, that is the name of it.

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double CPerfCounters::GetCounter(char* pstrCounter)
{
 DWORD ctrType;
 HRESULT hr = S_OK;
 HCOUNTER *pCounterHandle;
 PDH_FMT_COUNTERVALUE fmtValue;

 // Allocate the counter handle array. Allocate room for
 // one handle per command line arg, not including the
 // executable file name.
 pCounterHandle = (HCOUNTER *)GlobalAlloc(GPTR, sizeof(HCOUNTER));

 pdhStatus = PdhAddCounter(hQuery, pstrCounter, 0, pCounterHandle);
 if (pdhStatus != ERROR_SUCCESS)
 {
  throw(pdhStatus);
  return -1;
 }

 // "Prime" counters that need two values to display a
 // formatted value.
 pdhStatus = PdhCollectQueryData (hQuery);
 if (pdhStatus != ERROR_SUCCESS)
 {
  throw(pdhStatus);
  return -1;
 }

 // Get the current value of this counter.
 pdhStatus = PdhGetFormattedCounterValue (*pCounterHandle, PDH_FMT_DOUBLE,
&ctrType, &fmtValue);
 if (pdhStatus != ERROR_SUCCESS)
 {
  throw(pdhStatus);
  return -1;
 }

    return fmtValue.doubleValue;
}
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