Hi all
Is there anybody who know an article about structure of a COM(I mean "Component Object Model" file?
I want to know how they store name of routines that belongs to that COM.
I didn't see name of any routine of it in a COM file...
Is there anybody here to help?

sincerely yours

There is Nobody here to help

I ran into this article when I was cracking a COM module.
See:
http://www.woodmann.com/forum/showthread.php?t=7695

I am not sure if it answers your question, but it is pretty illustrative about naming conventions

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dncomg/html/msdn_components.asp

Thanks...
At least I Know I should think about another thing now.
But I think it is possible,because when you import a COM in an application
in VS(I test this C# 2003) you will see all of its objects in object browser.
How they can obtain this information???

sincerely yours

the objects are described in a TYPELIB resource. Usually the MS midl compiler translates a .IDL file to a .TLB file, which then is included as binary object in a .RC file ...

IIRC the TYPELIB resource format is not described, but some interfaces (ITypeLib, ITypeInfo,...) are supplied to access the information.

Hello!

I'am pretty much sure you will find everything you need here:

http://www.microsoft.com/msj/0399/hood/hood0399.aspx ("http://www.microsoft.com/msj/0399/hood/hood0399.aspx")

I found this site to have an excellent reference including source.

http://ript.net/~spec/

I wrote some C++ code to extract all the methods from a COM interface a while ago. I might be able to dig it up if you need it.

*edit* To clarify a bit, what you're looking for is something that emulates the functionality of the MS COM/OLE Object Viewer, right?

Thanks for it...
It was a great help.

sincerely yours

After reading these I learned a lot about COM.
but there a question that I still can't find in those articles.
According to these articles there are to ways for calling methods:
1-IDispath.Invoke that uses memberid(DISPID) for calling some routines.
2-Some other will use virtual function table(VTBL) for calling.
But there is a question:
How IDispatch.Invoke convert DISPID to real offset(or RVA) in file?
What is structure of VTBL?

I need these answers for completely figuring out the the real offset of COM methods...

Is there any article for these?

sincerely yours

No structure, just array.

Please read this: http://www.microsoft.com/msj/0399/hood/hood0399.aspx ("http://www.microsoft.com/msj/0399/hood/hood0399.aspx")
It's an article by Matt Pietrek with full source code included.

There is an sample prog wich can create .map file for COM objects, so that is what you really need.

Regards.