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' The MyCOMClass type could be written in



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[book] [en] Pro C# 2008 and the NET 3.5 Platform Fourth Edition

' The MyCOMClass type could be written in

' any COM-aware language, and may be located anywhere

' on the network (including your local machine).

Dim obj as MyCOMClass

Set obj = New MyCOMClass    ' Location resolved using AppID.

obj.DoSomeWork

Although COM can be considered a very successful object model, it is extremely complex

under the hood (at least until you have spent many months exploring its plumbing—especially if

you happen to be a C++ programmer). To help simplify the development of COM binaries, numer-

ous COM-aware frameworks have come into existence. For example, the Active Template Library

(ATL) provides another set of C++ classes, templates, and macros to ease the creation of COM types.

Many other languages also hide a good part of the COM infrastructure from view. However,

language support alone is not enough to hide the complexity of COM. Even when you choose a

relatively simply COM-aware language such as VB6, you are still forced to contend with fragile regis-

tration entries and numerous deployment-related issues (collectively, and somewhat comically,

termed 


DLL hell).


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