// @pymethod bytes|propsys|StgSerializePropVariant|Serializes a <o PyPROPVARIANT>
static PyObject *PyStgSerializePropVariant(PyObject *self, PyObject *args)
{
PROPVARIANT *pv;
SERIALIZEDPROPERTYVALUE *pspv=NULL;
ULONG bufsize;
HRESULT hr;
// @pyparm <o PyPROPVARIANT>|propvar||The value to serialize
if (!PyArg_ParseTuple(args, "O&:StgSerializePropVariant", PyWinObject_AsPROPVARIANT, &pv))
return NULL;
PY_INTERFACE_PRECALL;
hr = StgSerializePropVariant(pv, &pspv, &bufsize);
PY_INTERFACE_POSTCALL;
if (FAILED(hr))
return PyCom_BuildPyException(hr);
PyObject *ret = PyString_FromStringAndSize((char *)pspv, bufsize);
CoTaskMemFree(pspv);
return ret;
};
HRESULT SerializePropVariantAsString(REFPROPVARIANT propvar, PWSTR *ppszOut)
{
SERIALIZEDPROPERTYVALUE *pBlob;
ULONG cbBlob;
// serialize PROPVARIANT to binary form
HRESULT hr = StgSerializePropVariant(&propvar, &pBlob, &cbBlob);
if (SUCCEEDED(hr))
{
// determine the required buffer size
hr = E_FAIL;
DWORD cchString;
if (CryptBinaryToStringW((BYTE *)pBlob, cbBlob, CRYPT_STRING_BASE64, NULL, &cchString))
{
// allocate a sufficient buffer
hr = E_OUTOFMEMORY;
*ppszOut = (PWSTR)CoTaskMemAlloc(sizeof(WCHAR) * cchString);
if (*ppszOut)
{
// convert the serialized binary blob to a string representation
hr = E_FAIL;
if (CryptBinaryToStringW((BYTE *)pBlob, cbBlob, CRYPT_STRING_BASE64, *ppszOut, &cchString))
{
hr = S_OK;
}
else
{
CoTaskMemFree(*ppszOut);
*ppszOut = NULL;
}
}
}
CoTaskMemFree(pBlob);
}
return hr;
}