Re: CComPtr strange behaviour

From:
"Igor Tandetnik" <itandetnik@mvps.org>
Newsgroups:
microsoft.public.vc.atl
Date:
Mon, 27 Jul 2009 07:58:46 -0400
Message-ID:
<epztbGrDKHA.4064@TK2MSFTNGP04.phx.gbl>
Alexander Lamaison wrote:

However, I think my crashed were caused by calling methods and an
IExtractIconW and that one's fetch methods looks like this:

CComPtr<IExtractIconW> CHostFolder::extract_icon_w(
HWND /*hwnd*/, PCUITEMID_CHILD /*pidl*/)
{
TRACE("Request: IExtractIconW");

return this;
}

class ATL_NO_VTABLE CHostFolder : // Implements context_menu(),
                                 // extract_icon_w() etc.
public IExtractIcon,
public swish::shell_folder::folder::CSwishFolder
{
public:
BEGIN_COM_MAP(CHostFolder)
COM_INTERFACE_ENTRY(IExtractIcon)
COM_INTERFACE_ENTRY_CHAIN(CSwishFolder)
END_COM_MAP()


Do you by any chance compile some files with Unicode on, and others off,
so that IExtractIcon is IExtractIconA in some translation units and
IExtractIconW in others? Check your project settings.
--
With best wishes,
    Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925

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