To complete the class, declare its variables:
shell state countDown gc captureMode rectangle widgetMan radio countLabel buttons frame text
CgConstants CwConstants CfsConstants
To make the screen capture tool functional, you must implement its methods. Example: Implementing methods for ScreenPMCapture and ScreenWinCapture describes how to do this.
If you plan on completing the examples in Defining lineups for multiple platforms, you might now copy the class, but name it ScreenPMCapture or ScreenWinCapture. Or, after you implement methods for the class you just created, file out the class and its methods, rename the class and change the platform-specific method in the filed out code; then file the changed code into your image. Example: Renaming a class and changing its methods illustrates how you might do this.