Destruction can come in many forms, most of it negative. The destruction I write of is class destruction, the opposite of class construction. It's a most useful tool to understand for memory management when working in object-oriented C (OOC). In this article, we'll discuss how memory-management planning is important when developing an OOC application. We'll examine the ability to dynamically allocate memory for our application window class (AWC) template as well as the foundation classes. We'll also make some changes to the AWC to make it more suitable for data extensive applications. In a two-part article on OOC, I discussed how to create foundation and AWC templates, respectively. In the discussion of the foundation classes, we examined how to create simple classes in C, using structures for containment and functional pointers to create a member function linkage. We also discussed how to create aggregation relationships between classes, which enable classes to have "part-of" relationship with other classes. We also introduced the concept of class resources, which enables the assignment of initial prop erties to a class when the class is constructed. In this article, we'll take these ideas a step further by dynamically creating objects of child classes for use in the parent class.
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