Hour 20. Controlling Other Applications Using Automation
 | In Hour 17, “Designing Objects Using Classes,” you learned how to use classes to create objects. In that hour, I mentioned that objects could be exposed to outside applications—Excel, for example, exposes most of its functionality as a set of objects. The process of using objects from another application is called Automation. The externally accessible objects of an application compose its object model. Using Automation to manipulate a program's object model enables you to reuse components. For instance, you can use Automation with Excel to perform complex mathematical functions using the ... |
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