Decorator

From: al (allin_at_168.net)
Date: 12/23/03 

Date: Tue, 23 Dec 2003 02:34:11 GMT

class what
{
   public:
        virtual bool method1();
        ...
};

class Decorator : public what
{
    public:
        bool method1();
        int added_new_method();
        ...
};

Assume method1() is one of the methods interesting client.

Is Decorator so important? Why not just added_new_method() directly into
what class? Additionally, the method1() in what class has to be virtual to
be "decorated" by Decorator class.

Am I missing seeing its importance?

Thank you very much!

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