Solved

Regarding Serialization ...

Posted on 1998-12-13
2
324 Views
Last Modified: 2013-11-20
hello everybody
I am going through MFC tutorials (Scribble). There is one object declared
as follows :

CTypePtrList<CObList, CStroke *> m_strokeList;

The serialise function in CScribbleDoc is declared as follows :

      if (ar.IsStoring())
      {
            // TODO: add storing code here
      }
      else
      {
            // TODO: add loading code here
      }

      m_strokeList.Serialize( ar );

And the serialise function for "CStroke" has been defined and implemented.
What i am unable to understand is that how does the serialise function
of "CStroke" is being called when i save the document.
What i understand is that m_strokeList.Serialise() calls the serialise
function of the base class "CObject". Now how does the base class knows
that the object being serialised is list of pointes which are to be
serialised one by one so that serialise function of CStroke is called
for all pointers in the m_strokeList.
 
The "DECLARE_SERIAL" and "IMPLEMENT_SERIAL" macros are present in CStroke.

0
Comment
Question by:aarya
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 15

Accepted Solution

by:
Tommy Hui earned 10 total points
ID: 1326123
The CList is derived from CObject. Basically, every CObject-derived class has the ability to serialize itself. So in this case, when the CList container is asked to serialize itself, it knows to store information about itself into the document. It also knows that there are objects in the link and saves them into a stream.

There's a book called MFC Internals by Sheppard and Wingo. Take a look at it if you want to know more about the internals of MFC.
0
 

Author Comment

by:aarya
ID: 1326124
Well, what i dont understand is that CObject derived class in this case CObList does not override the functionality of serialize function so how can CObject have knowledge to take care of the fact that each member of the CObList is to be serialized.

If CObList had been overriding the serialize function then i can understand how they would have implemented but otherwise how can u take care.

Any nice to have response from u.
 Thui it seems that u r point rich man. I have plenty of questions to ask but no points left. Can u do me a favor to lend few points.
 Thanks in advance.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Show shut-down message as Windows 8 shuts down. 9 110
xyBalance chalenge 58 104
WinWaitActive parameters 12 31
isEverywhere  challenge 19 91
Introduction: Dialogs (2) modeless dialog and a worker thread.  Handling data shared between threads.  Recursive functions. Continuing from the tenth article about sudoku.   Last article we worked with a modal dialog to help maintain informat…
Have you tried to learn about Unicode, UTF-8, and multibyte text encoding and all the articles are just too "academic" or too technical? This article aims to make the whole topic easy for just about anyone to understand.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question