Re: private destructor and templates

From:

"Ben Voigt" <rbv@nospam.nospam>

Newsgroups:

microsoft.public.vc.language,microsoft.public.dotnet.languages.vc

Date:

Fri, 20 Oct 2006 12:49:48 -0500

Message-ID:

<uj1akAH9GHA.4476@TK2MSFTNGP04.phx.gbl>

A strict reading of the PostMessage docs for VC2005 implies it is illegal,
though I don't understand why it should be illegal, since, as you say, you
have control of the pointers at both ends.

Rather the strict reading says that the warnings don't apply to me because
I'm using WM_USER, not "a message in the range below WM_USER".

The point is, you should not be calling constructors if you don't match
the constructor calls with equivalent destructor calls. To avoid
constructor calls, you shouldn't use new-expressions.

If I define operator new myself and have no data members with non-trivial
constructor, then the only extra code being executed are my constructors,
right?

/**
** \param Base, should be derived from OpNotification or OpRequest
** and provide a default constructor.
**/
template<typename Base>
struct IConcurrentOperations::BufferedMessage
: public AllocHelper<IConcurrentOperations::BufferedMessage<Base>, Base>
{...}

That still needs to be explicitly specified for every concrete derived type
:(

or something like that.

Tom

Is this page accurate:
http://www.informit.com/guides/content.asp?g=cplusplus&seqNum=196&rl=1