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All you really need to develop event-driven programs is the Form designer and Menu designer. Using the designers and their tools, you can build data-entry forms, dialog boxes, menus—all the visible components of an application. Then use the built-in Source editor to tie the components together by writing procedures to execute when events occur.

Projects that are more complex, however, require planning and a good design. That’s where object-orientation helps. Using object-oriented techniques, you can group related information into your own objects, build classes of related objects, and create new objects by making easy modifications to existing ones.