SetBufferSize

eMask

[in] Specifies whether to set the size of the read buffer, the write buffer, or both buffers.

cbSize

[in] Desired size of the buffer(s) indicated by the eMask parameter.

Returns S_OK if successful, otherwise a failure HRESULT.

The default size of the read and write buffers is 4096 bytes.

The following example demonstrates use of the SetBufferSize function.

// CoAcme4321.cpp
HRESULT Acme4321::OnFinalInitialize()
{
  HRESULT hr = S_OK;

  // Set both the read and write buffers to be 8K bytes
  hr = io.SetBufferSize(IoReadAndWriteBuffers, 8192);

  return hr;
}

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