This chapter describes the steps you take to extend new functionality in the Mars sample application. It describes these steps in terms of modifying convenience classes already provided to guide you through the process. It helps answer "how to" questions for common tasks. These questions (and the classes used to answer them) include:
- How do you add a new graphic and its tool to GrafEdit?
- How do you create a tool for making a selection?
- How do you define a new way of manipulating a selection?
- How do you add a new command?
- Adding a new graphic and its tool
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- Creating a selection tool
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- Defining a new way to manipulate a selection
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- Adding new commands
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