Re: ATL and STL, headache #88: maps of structs containing CComPtr

"Alexander Nickolov" <>
Wed, 24 May 2006 10:57:37 -0700
I don't think it would when embedded in a struct with no
copy constructor and assignment operator redefined. These
need to be added since the defaults do shallow copies thus
leading to double destruction.

Alexander Nickolov
Microsoft MVP [VC], MCSD

"Igor Tandetnik" <> wrote in message

Jason S <> wrote:

I am using a map<> to lookup interface pointers:

struct dsrc_entry {
CComPtr<Idatasource> pdsrc;
DWORD cookie;
dsrc_entry(Idatasource *pdsrc_in, DWORD cookie_in) : pdsrc(pdsrc_in),
typedef map<CComBSTR, dsrc_entry> Idatasourcemap;
Idatasourcemap dsrc_map;

I am a bit unsure of the proper way to get this change to work. I'm
basically worried about what happens when the dsrc_entry structure
gets copied (when stuff gets inserted into the map, possibly also on
lookup but I think the copying only happens on insertion). Will the
CComPtr<> do the right thing?

Yes, CComPtr will do the right thing.
With best wishes,
   Igor Tandetnik

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