How to do the Object Serialization in mfc?

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Hello,

i have created gridcontrol from list control. now i want to save the object of the list control and when i open the application i want to load it again.

So, please help me...

Thanks.

Posted 28-Jan-14 3:26am

Member 10474623

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CPallini · Answer 1 · 2014-01-28T03:34:00

Solution 1

Good background info on MFC serialization: Microsoft Visual C++/MFC File Processing: Serialization[^].

Posted 28-Jan-14 3:34am

CPallini

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Member 10474623 28-Jan-14 23:54pm

Thanks...

But my problem is that "When i save the object,i have to send each item to the class that is derived from the CObject. but i don't want to send each item but i want to send the object at a time. "

for Ex...
i have created a class CSave from CObject. and i have one list control object m_lstDemo.
now when we want to serialize we have to do like this

CSave *itm=new CSave(m_lstDemo.GetItemText(0,0),m_lstDemo.GetItemText(0,1),m_lstDemo.GetItemText(0,2));
CSave *itm1 = new CSave(&m_lstDemo);

but i want to save m_latDemo object at a time because i have so many data to save. so this is not possible.

so, please let me know how to do this ?

CPallini 29-Jan-14 3:14am

You have to save all the items, of course. However you might create a new class, inheriting from the list control and implement the serialization just once there.

Member 10474623 30-Jan-14 0:09am

Thank a lot...

Can you please let me know how to take array of strings so that i take array of m_lstDemo.GetItemtext(i,j). how to pass the array and how to retrieve it.

Member 10474623 · Answer 2 · 2014-01-31T00:06:00

After Searching a lot i got my solution and it is like this.

1) Take CArray.
i have created a CSave class from CObject.
In the header file i have to declare like this.
class CSave : public CObject
{
public:
CSave();
CSave(CSave &item);
CSave &operator =(CSave &item);
virtual ~CSave();
public:
CString str[120];
}

2) In the source file(.cpp) declare like this

C#

CSave::CSave(CSave &item)
{
    int j=0;
    for(int Row=0;Row<20;Row++)
    {
        for(int Col=0;Col<6;Col++,j++)
        {
            str[j]=item.str[j];
        }
    }
}

3) For Serialization do like this

C#

void CSave::Serialize(CArchive& ar)
{
    CObject::Serialize(ar);

    if( ar.IsStoring() )
    {
        int j=0;
        for(int Row=0;Row<20;Row++)
        {
            for(int Col=0;Col<6;Col++,j++)
            {
                ar<<str[j];
            }
        }
    }

     else
    {
        int j=0;
        for(int Row=0;Row<20;Row++)
        {
            for(int Col=0;Col<6;Col++,j++)
            {
                ar>>str[j];
            }
        }
    }
   
}

4)In the dialog source file (.cpp) add this for adding data to serialization....

C#

CSave itm;
    int j=0;
    for(int Row=0;Row<20;Row++)
    {
        for(int Col=0;Col<6;Col++,j++)
        {
            itm.str[j]=m_lstDemo.GetItemText(Row,Col);
        }
    }
    CSave *item = new CSave(itm);
    ListOfData.Add(item);

5) For Reading data back ..

XML

CSave *itm=reinterpret_cast<CSave *>(ListOfData[0]);

    int j=0;
    for(int Row=0;Row<20;Row++)
    {
        for(int Col=0;Col<6;Col++,j++)
        {
            m_lstDemo.SetItemText(Row,Col,itm->str[j]);
        }
    }

That's it...