Serialization of GUID variable in MFC

I'm trying to serialize a GUID object in MFC. When I try to archive, I get the following error

Quote:

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binary '<<' : no operator defined which takes a right-hand operand of type 'struct _GUID' (or there is no acceptable conversion)

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My code snippet is this

Code:

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    void MyClass :: Serialize(CArchive &ar)
    {
      CObject::Serialize( ar );
      if( ar.IsStoring())
      {
        ar << m_GUIDVariable;
      }
      else
      {
        ar >> m_GUIDVariable;
      }
    }

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How shall I proceed?

struct _GUID is a structure. 'ar <<' doesn't know what to do with structures. So you will have to do member by member.

Code:

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ar << m_GUIDVariable.Data1;
ar << m_GUIDVariable.Data2;
... etc

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Quote:

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Originally Posted by Skizmo

struct _GUID is a structure. 'ar <<' doesn't know what to do with structures. So you will have to do member by member.

Code:

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ar << m_GUIDVariable.Data1;
ar << m_GUIDVariable.Data2;
... etc

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OK. Thanks.

GUID is a structure of PODS so you should be able to serialize with CArchive::Write() and Read():

Code:

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    void MyClass :: Serialize(CArchive &ar)
    {
      CObject::Serialize( ar );
      if( ar.IsStoring())
      {
        ar.Write(&m_GUIDVariable,sizeof(GUID));
      }
      else
      {
        ar.Read(&m_GUIDVariable,sizeof(GUID));
      }
    }

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