The downloads at http://www.chilkatsoft.com/downloads.asp are the full-versions of the products, but may also be used in a fully-functional 30-day trial mode.   A Chilkat component/class is unlocked at runtime by calling the UnlockComponent method.  This method must be called once from within your application prior to using any Chilkat objects. It is not required to call UnlockComponent for each instance of a Chilkat object created.

An arbitrary string, such as “Hello World” may be passed to UnlockComponent.  The causes a fully-functional 30-day trial to automatically begin.  If a license is purchased, you will receive via email a permanent unlock code that should be inserted into the UnlockComponent method call.