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CCacheEntry<T>::UpdateValue

Stores a value in a cache entry and marks the entry as valid.

Syntax

void CCacheEntry<T>::UpdateValue(T value);

Parameters

value

[in] New value to store in the cache entry.

Example

The following example demonstrates use of the UpdateValue function.

STDMETHODIMP Acme4321::put_Bandwidth(double val)
{
  HRESULT hr = S_OK;

  // Send the new value to the instrument
  hr = InstrPrintCommand(val);

  // If the instrument was updated successfully, update the cache entry
  // for the Bandwidth property so it reflects the new value
  if (SUCCEEDED(hr))
  {
    CCacheEntry<double>* pEntry = GetOrCreateCacheEntry<double>(_T("IAcme4321.Bandwidth"));
    pEntry->UpdateValue(val);
  }

  return hr;
}

See also