From: "R. Kumar" <sentinel.2001@...>
Date: 2010-02-02T02:16:21+09:00
Subject: Re: Inheritance related problem

Rick Denatale wrote:

> 
> The other think to watch out for in this particular case, is not to
> confuse the implementation relationship of subclassing/module
> inclusion with the containment relationship of windows/widgets.  You
> don't seem to be doing this from what you've posted, but ...
> 
Not sure what you mean by what I've posted - do you mean the sample code 
which was only illustrative since the actual code will not be runnable.
Or what i have later discussed... since in my case a Pad is a window and 
is not contained in a window.
Where a Window was being used earlier, now a Pad may be used. However, 
the user objects are unaware of whether they are writing to a Window or 
a Pad.

I know there is one thing that is wierd about this. And that's that the 
constructor of Window creates a ncurses window, whereas the constructor 
of Pad creates a ncurses Pad. So the constructor of Pad does not do a 
super. However, by subclassing i get all the behaviour of Window which 
is essentially identical.

Sadly, i can't cover this with automated tests since its all visual and 
the most errors can only be seen visually.
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