COM+ Unleashed

Building COM+ Components

Now that we've dealt with the significant and critical design requirements of COM+, let's examine the implementation details. Here's the good news—the COM+ API only has two functions, SafeRef() and GetContextObject(). Of course, one of these functions returns a COM interface pointer that enables you to call several more methods, some of which return additional interfaces pointers, and, well, you get the idea.

So before you develop your first COM+-aware component, you need to get a handle on the various objects and interfaces available to COM+ constituents. The next discussion examines the nature of IObjectContext, the most important interface implemented by COM+, and IObjectControl, which is the only COM+-specific interface ...