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Tip of the Day
Language: Enterprise
Expertise: Beginner
Aug 23, 1999



Application Security Testing: An Integral Part of DevOps

Make an ATL Object Noncreatable

Here is a simple way to make your COM object noncreatable. You can change the attributes of an ATL-based COM object so that the automation client cannot directly create the object. In this case, the object would be returned via a method call on another object rather than created directly. To make an object noncreatable remove the OBJECT_ENTRY for the object from the ATL object map and add the 'noncreatable' attribute to the coclass in the IDL file. This prevents a client from using the default class factory to create instances of an object interface.

For example:

helpstring("This class cannot be created directly"),
coclass CMyClass
[default] interface IMyInterface;

Deepak Pant
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