Component Writer's Guide :: Enumerated Properties

There is no equivalent in PHP to Pascal enumerated types, so we have used a convention on the RPCL code but it's not enforced you use the same convention on your components.

To define several values for the BorderStyle property, we use defines:

// BorderStyles
define('bsNone', 'bsNone');
define('bsSingle', 'bsSingle');

That way, if we use bsNone in your code, it gets translated to the string "bsNone", so an enumerated property is a string property and we can check their value against the constant we have defined.