HRESULT ReadFromStream( IStream* pStream );
Return Value
A standard HRESULT value.
Parameters
pStream
[in] A pointer to the IStream interface on the stream containing the data.
Remarks
Sets the m_str member to the BSTR contained in the specified stream. ReadToStream requires a previous call to WriteToStream.
Example
void CMyView::OnEditCopy()
{
IDataObject* pDataObj;
//fill in the FORMATETC struct to retrieve desired format
//from clipboard
FORMATETC formatetcIn = {CF_TEXT, NULL, DVASPECT_CONTENT, -1,
TYMED_ISTREAM};
STGMEDIUM medium;
ZeroMemory(&medium, sizeof(STGMEDIUM));
//get IDataObject from clipboard
HRESULT hr = ::OleGetClipboard(&pDataObj);
//retrieve data from clipboard
hr = pDataObj->GetData(&formatetcIn, &medium);
if ( SUCCEEDED(hr) && medium.tymed == TYMED_ISTREAM)
{
CComBSTR bstrStr;
//get BSTR out of the stream
hr = bstrStr.ReadFromStream(medium.pstm);
//release the stream
::ReleaseStgMedium(&medium);
}
}