Generating custom subclasses allows you to modify the generated code so you can further customize screens and controls.
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In the Screen Design page, click the Platform-specific tab.
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In the Generate a custom coding options subclass option, click false to change it to true.

You can set the custom coding options on:
- Device – subclasses for the BOBCUIDefinition and BOBCOptionsDefinition will be generated if set to true.
- Display – a subclass for the screen is generated if set to true.
- Tab panel – a subclass for the tab panel is generated if set to true.
- Tab folder – a subclass for the tab folder is generated if set to true.
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(Optional) To change all of the property values to true at once (Device, Display, Tab folder, and Tab panel):
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Right-click in the Screen Design page and select Preferences.
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In Preferences, go to .
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In Platform Property, select Generate custom subclasses for all.
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Restart Eclipse.
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Click the Verify icon
on the toolbar to verify the device application has no errors.
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Click the code generation icon
on the toolbar and proceed through the Generate Device application wizard to generate the custom code.