message map structure in MFC

>>I want the message map structure in MFC and also where the first message is comming from and how it is forwarded to actual class. Please provide me the documentation for this.

These things are not 'documented' beyond a reasonable extent, as they're the internals of the framework. I reckon reading most of the details of the workings of the framework in the book "MFC Internals", which you may want to give a read.

>> I also want to know the execution flow of MDI i.e. how the frame is created and how the view is created & attached.

Since MFC comes with source code, you could always single-step the code to see what's happening.

>>I also want to know about the document view architecture in mfc.

I'd recommend the book "Programming Windows with MFC" by Jeff Prosise.

What Rajesh said is correct. These aren't documented, so you would not have much luck looking for that on the net. (I could be wrong but when I started out, I didn't find any.)

However certain books on MFC like Mike Blaczszak's Professional MFC, and not necessarily the "internals" series, do provide some understanding on the implementation in the starting chapters that introduce the framework. That together with stepping through the code would help elucidate the flow.

For how MFC works a good introduction is:

Paul DiLascia - "Meandering Through the Maze of MFC Message and Command Routing", MSJ July 1995.

It was available online yonks ago and it might still be somewhere. While I'm on the subject of Paul DiLascia he wrote an excellent book on writing Windows application frameworks:

Paul DiLascia - "Windows++: Writing Reusable Windows Code in C++", Addison Wesley 1993 [IIRC]

While it won't tell you about MFC it'll give you some insight into the design decisions that the MFC programmers made when creating their library. One word of warning DiLascia's writing style isn't very formal and I've heard complaints from readers whose first language isn't English that his work is a bit idiomatic.

For how MDI works a good introduction is in:

Charles Petzold - "Programming Windows", Microsoft Press 2000.

I think every edition of his book from the Windows 3.1 edition (which must have come out in the early 90s and was the first version of windows to support MDI) had essentially the same coverage. Petzold's coding style is a bit archaic these days (actually it was a bit archaic in the 90s, even for C programming) but his descriptions of how to fit programs together isn't bad.

On the other books recommended here... Shepherd and Wingo is okay as a read, but it dishes out too much attention to OLE and is a bit superficial on how the core library works in places. Prosise's book is a bit like eating sandpaper - his writing style is a really dry which hides some decent technical content. It's a book I've never managed to read cover to cover without wanting death to take me.

Cheers,

Ash