C / C++ / MFC

int __stdcall TestFunc(VARIANT var)
{
  // Check the variant type and contents
  if ((var.vt & VT_ARRAY) == 0)
    return E_INVALIDARG;
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  if ((var.vt & VT_BSTR) == 0)
    return E_INVALIDARG;
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  // OK, we have a safe array of BSTRs
  SAFEARRAY*	pSA = var.parray;
  BSTR*		bstrArray;
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  // Lock the data
  SafeArrayAccessData(pSA, reinterpret_cast<void**>(&bstrArray));
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  for (unsigned i = 0; i < pSA->rgsabound->cElements; i++)
  {
    // do something with bstrArray[i];
  }
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  // Allow others to use it
  SafeArrayUnaccessData(pSA);
}

  // Generate the safe array for the data
  VARIANT		var;
  int		nSize = <size of array>;
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  VariantInit(&var);
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  var.vt = VT_ARRAY | VT_BSTR;
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  SAFEARRAY*		pSA;
  SAFEARRAYBOUND	bounds = {nSize, 0};		// nSize items starting with index 0
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  pSA = SafeArrayCreate(VT_BSTR, 1, &bounds);
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  BSTR*	bstrArray;
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  // Access the data and add the new items
  SafeArrayAccessData(pSA, reinterpret_cast<void**>(&bstrArray));
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  for (int i = 0; i < nSize; i++)
  {
    // Set the element of bstrArray[i]
  }
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  SafeArrayUnaccessData(pSA);
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  var.parray = pSA;
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  // Call TestFunc with var as parameter