Defining VBA Classes

Question

I apologize in advance if this is a top-down question, but I really need help understanding how to find out what to do from classes in a VBA project.

NOTE. I do not ask how to code the class. I ask how to determine what a class is for.

Example

I want to draw shapes on a PowerPoint slide. 2 out of 3 kinds of forms that I need have the same properties and methods. I would create a class called CShapeor 3 classes: CCircle, CSquare, CRectangle? In addition, lines are considered shapes in PowerPoint. Should I add a class CLineor just combine everything together in CShape?

I searched Google for class definition methodologies in VBA and the like, but found nothing. Does anyone have a method or a way in which they determine how to create classes for their projects (and the reasons for this)?

In addition, I just go into classes and interfaces, and this is the first project in which I use them. Thank!

UPDATE

I found this: When to use a class in VBA?

Answer 1

When you work with code that can be reused, this is the perfect time to use classes.

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Answer 2

VBA ( , Visual Basic 6) .

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Answer 3

VBA 20 .
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