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Chapter 19: Extending the GUI


In this chapter we will investigate how we can improve the GUI for Sketcher. After adding a status bar, we will investigate how to create dialogs, and how we can use them to communicate with the user and to manage input. Another GUI capability we will be exploring is pop-up menus, and we will be using these to enhance the Sketcher application. All of this will give you a lot more practice in implementing event listeners and more besides.

In this chapter you will learn:

  • How to create a status bar

  • How to create a dialog

  • What a modal dialog is and how it differs from a non-modal dialog

  • How to create a message box dialog

  • How you can use components in a dialog to receive input

  • What a pop-up menu is

  • What context menus are and how you can implement them

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