Customer Reviews

Understanding DCOM

5 star:		(5)
4 star:		(3)
3 star:		(2)
2 star:		(4)
1 star:		(1)

 

 

I found this book to be very clear and complete in it's explantion of COM and DCOM.

DCOM is clearly explained in Chapter 14(p.229). The real difference between COM and DCOM is the way you create the COM object(p.229-230). All the magic is handled by the Service Control Manager(p230). For DCOM you must use CoCreateInstanceEx instead of CoCreateInstance(p230). The COSERVERINFO struct should reflect the name of the server containing the COM object and must be passed as the fourth parameter of the CoCreateInstanceEx function(p231-233). The rest of DCOM is setting up permission so you can get around security(in NT) ( rest of chapter 14).

Again this book clearly explains what is need to do COM and DCOM. I think people thought that DCOM was this incredibly complicated mess that could not be explained so quickly. This book showed this not to be so.

I had no clue what is a com object. All I know was how use com or ocx object. For some project, I have to add com callbacks. This books explains clearly and one baby step at a time. I strongly recommend this book to anybody who is intereted in learning any thing about COM/DCOM

I own many books on the subject on COM/DCOM. I bought this one days after it was first published in December 1998. While my other COM books are pristine, this one is tattered and torn with pages falling out. I keep it within reach at all times. When I can't find it, I panic. Whenever I'm stumped, I grab it and within a few minutes, I'm back on track. It is not a theoretical dissertation which is why I like it. If you want to spout COM jargon, buy Don Box. If you want to get work done, buy this one.

If you want to write the COM equivalent of a "Hello World" program, this book will show you how to do it very simply. It also provides a basic overview of the most important COM topics (threading, callbacks, connections points), but the coverage is generally on the light side. The book works as a readable and succinct introduction to COM, but those seeking greater mastery of the subject will have to look elsewhere.

This is possibly the most error-filled programming text I've seen. There are typos on practically every page, even in some of the code examples. It's not a long book -- somebody should have proofread it once.

This book provides a nice basic introduction into COM for C++ programmers. The examples are simple and easy to understand. I would have given it a better rating except for the number of errors in the text.

While I enjoyed reading the book and did get alot of useful information out of it, it doesn't really delve into the DCOM aspect of COM. If you're wanting to learn COM, this book is great, if you want DCOM, recommend Inside DCOM.

This book gives you the basics to get you started with COM, but as far as DCOM is concerned it barely covers the basics. For example, it fails to mention you need a #define _WIN32_DCOM in your clients StdAfx.h file in order to be able to call CoCreateInstanceEx(). Only one chapter is devoted to distributing COM classes, and it is only 15 pages long.

This book is ideal for any proficient C++ programmer who needs to delve into the practical world of COM. Though riddled with typos, which i am sure is a testament to how quick the authors had to get this to press, the book is easy to follow. The examples though are sometimes a little misplaced but if you read the book twice over which i did for the second time in three days, then you should get something out of this book.

However the title of the book is inappropriate since the authors really only devote one chapter to DCOM, which is a little lame to say the least. The best chapter is the one that deals with callbacks and bidirectional communication. Those who need to implement push/pull applications well be delighted with this.

If you persist and work thru' the examples,then you will get a lot out of this book. If you want to understand more about how COM really works, buy Don Box's "Essential COM".

It's a nice introduction to COM/DCOM. The authors go over the basics, over and over and over again. Then they lead you through several simple examples.

You get a step-by-step overview to very elementary COM/DCOM concepts.

You will find phrases such as "if you want more information, buy a book on OLE/automation." That's what I thought I bought *this* book for! Too much goes unexplained, waved away with a magic wand. Many of the examples don't compile (the authors tell you to build a project without MFC and then use MFC classes within it).

Recommendation: If you have trouble getting started with COM/DCOM, this will help. Expect to obtain more materials to actually understand what's happening and how to do it.

I found this book very much useful in understanding COM Concepts. It provides step by step procedure to learn COM. Downside of this book is it does not provide much information on DCOM. I would recommend this book for any one who wants to start learning COM from C++ side.