> The CLR will free the BSTR during the marshaling process if the
> function has been declared correctly.

"Peggy" <pawanarya@msn.com> wrote in message
news:1156842615.871779.47860@m73g2000cwd.googlegroups.com...

>Now when this BSTR is returned to the Managed world, will the memory
>allocated to the BSTR be freed by GC or do I need to take care of
>clearing off the Allocated memory?

Peggy wrote:
> > The CLR will free the BSTR during the marshaling process if the
> > function has been declared correctly.
>
> Hi Mattias
>
> Here's the declaration and how it is used in the C# code.
>
> //*******DECLARATION and method IMPLEMENTATION**********//
>
> HRESULT GetValue([in] BSTR bstrName, [out,retval] BSTR* pbstrValue);
>
> STDMETHODIMP MyNativeClass::GetValue ( BSTR bstrName, BSTR* pbstrValue)
> {
> std::wstring strValue = GetValue( std::wstring( CW2W(bstrName) ),
> true );
> *pbstrValue = ::SysAllocString( strValue.c_str() );
> return S_OK; }
>
>
> //*******USAGE in C# code**********//
>
> if (objNative.GetValue( "_Source" ) == string.Empty)
> OR
> m_SomeVariable.AssignVal( objNative.GetValue( "_Source" ) )
>
> Now, will the String onject be collected by GC.
>
> Regards,
> Pawan Arya