I need help with overriding CDocument::OnSave, OnSaveas and DoSave

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The author in of this article

CDocument::DoSave revealed

claimed to have overriden dosave, but on checking documentation at

http://msdn.microsoft.com/en-us/library/sd83ta1b.aspx

I could find none of OnFileSave, OnFileSaveas and DoSave as a member function.Pls I don't know what to make of this.Kindly help me out.

Posted 19-Feb-14 6:50am

Gbenbam

Updated 19-Feb-14 7:04am

Albert Holguin

v2

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Sergey Alexandrovich Kryukov 19-Feb-14 14:03pm

Why not asking the author of the article?
—SA

3 solutions

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-02-19T06:54:00

Solution 1

As you are referring one Article, then please add a comment at the bottom.
The author will get notified and reply you back.

Posted 19-Feb-14 6:54am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Comments

Gbenbam 19-Feb-14 13:04pm

The last time I did, I have not gotten any response till now.I don't intend to attempt such again.If you can offer other form of assistance please do.

Albert Holguin · Answer 2 · 2014-02-19T07:03:00

Solution 2

If you look at the afxwin.h file, the CDocument class implementation does have those calls. Not sure why MS doesn't document them but they're there.

DoSave is under a section labeled as:

C++

// implementation helpers

and the other two are under:

C++

// file menu commands

Posted 19-Feb-14 7:03am

Albert Holguin

Comments

Sergey Alexandrovich Kryukov 19-Feb-14 14:12pm

Where? I did not find functions with those exact names, too. And this is not the root of the problem. Please see my answer.
—SA

Albert Holguin 19-Feb-14 15:18pm

I looked within the afxwin header that's part of the VS2008. The article was written around 2002 I believe, so if they're not in the new CDocument, it may be they were removed, but they were also not referenced in the 2008 documentation even though I can see they're there.

Sergey Alexandrovich Kryukov 19-Feb-14 15:59pm

Not sure. I looked at VS 2013 documentation, and then 2005, same thing.
Having OnFileSave, OnFileSaveas would simply be illogical. OnSaveDocument is the part of "Save" and "Save As", and documentation confirms it...
—SA

Albert Holguin 19-Feb-14 16:32pm

Like I said, it's not in the documentation, but it is in the code.... and when exactly has logic ever stopped MS from doing something? lol

Sergey Alexandrovich Kryukov 19-Feb-14 16:44pm

MS is not completely illogical. There are weak fields. MFC is a legacy which last since pretty bad times of Microsoft (in terms of quality), so...
—SA

Sergey Alexandrovich Kryukov · Answer 3 · 2014-02-19T08:10:00

Solution 3

There is no OnSave, but there is OnSaveDocument:
http://msdn.microsoft.com/en-us/library/sd83ta1b.aspx[^].

And why would you possibly need help on overriding? If a function is virtual (and the function mentioned above is virtual), I hope you know how to override it. If it is not, you cannot override it at all? How such stuff may possibly need any help with?

On the other detail, the author of the article is responsible, no matter if can reach this person or not. I have a question for you: are you going to start writing code by yourself instead of reading code offered by others and playing with it? Or you already do? Then focus on it. Playing with other people's code is not the most productive way of doing things or learning.

—SA

Posted 19-Feb-14 8:10am

Sergey Alexandrovich Kryukov

Updated 19-Feb-14 8:11am

v3

Comments

Albert Holguin 19-Feb-14 15:20pm

True, overriding is trivial.

Gbenbam 20-Feb-14 5:57am

Please see my last comment.

Gbenbam 20-Feb-14 5:49am

I have in the past had difficulty locating documentation o. functions is msdn.Quite recently I found out whenever I use the namd of the function in a google search, I always get a link to the desired documentation.When it came to doing a google search with they functions i
under discussion, I did not get any link to any page of ms documentation but I got many reference to the function.In one of the search result, someone was trying to understand why his override of CApp::OnFileSave and CApp::OnFileSaveas did not work.He was told those functions are not members of CApp.In another search result,someone else wanted to know why his override of CDocument::OnFileSave wasn't working.A member of microsoft told him that both onfilesaveas and onfilesav call DoFileSave, if OnFileSave realises the file has not been saved previously, it calls DoFileSave.So I kind of fidure that overriding these function was somehow tricky.Since I learnt MFC years back, this is mg first mfc and first doc/view app.I feel that in order to make meaningful overrride of the functions under duscussion I needed to understand the default implemetation of the functions.IF wanted to read them up for myself and not base my override on some article or forum discussion.The help I came here seeking was that on locating the documentation on those functions so that I could read them up and proceed to write an effective overrride.I just couldn't understand why I couldn't locate documentation on those functions when so much mention ( as far as google search is concerned).I do believe those function existed.I have given up my search for them and decided to override OnSaveDocument which I have already done.