Re: CArray serialization Memory leaks

From:

"Tom Serface" <tom@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 7 May 2009 15:02:38 -0700

Message-ID:

<uazOZ#1zJHA.5528@TK2MSFTNGP03.phx.gbl>

Hi Phil,

I don't know the answer to your problem since I don't use Serialize any
more, but if I were you (or me) I'd do your data saving a different way. In
my experience the serialized files files are way too much trouble to work
with and just writing the data out as text or binary is often a lot easier.
I persist my files using XML typically these days. It makes debugging much
easier and changing the data from version to version much easier as well.

Take a look a this class for example:

http://www.codeproject.com/KB/cpp/markuparchive.aspx

Tom

"phil oakleaf" <news@oakleafsoftware.co.uk> wrote in message
news:%237zhXT1zJHA.5684@TK2MSFTNGP04.phx.gbl...

Hope someone can help

I have classes as below that I need to serialize

class FullTileCopy : public CObject
{
float m_x;
... other membersl CString m_image;

public:
DECLARE_SERIAL(FullTileCopy);

void Serialize(CArchive &ar)
{
....
}
};

class FullTileCopyArray : public CArray<FullTileCopy,FullTileCopy &>
{
public:
.....
};

the CString member variable causes the known problem when reading back as
the memory within the CString is not allocated.

Reading on-line I found the solution which is to add the function

template<> void SerializeElements(CArchive &ar,FullTileCopy *elements,int
nCount)
{
for (int i=0;i<nCount;i++,elements++)
{
elements->Serialize(ar);
}
}

Now everything saves and loads perfectly - the program works except I get
memory leaks for each and every FullTileCopy that is read back in (and
there are a lot of them). I'm not exactly sure where the leaks are created
but I think it's something within the CArray::Serialise

If anyone know what the solution is I'd be very grateful as I can't figure
it out.

Many thanks
Phil