CComBSTR::Detach
Rimuove m_str dall'oggetto CComBSTR e imposta m_str a NULL.
BSTR Detach( ) throw( );
Valore restituito
BSTR associato all'oggetto CComBSTR.
Esempio
// Method which converts bstrIn to uppercase
STDMETHODIMP BSTRToUpper(BSTR bstrIn, BSTR* pbstrOut)
{
if (bstrIn == NULL || pbstrOut == NULL)
return E_POINTER;
// Create a temporary copy of bstrIn
CComBSTR bstrTemp(bstrIn);
if (!bstrTemp)
return E_OUTOFMEMORY;
// Make string uppercase
HRESULT hr;
hr = bstrTemp.ToUpper();
if (hr != S_OK)
return hr;
// Return m_str member of bstrTemp
*pbstrOut = bstrTemp.Detach();
return S_OK;
}
Requisiti
Header: atlbase.h