The IDLffMrSID::Cleanup procedure method deletes all MrSID objects, closing the MrSID file in the process. It also deletes the IDL objects used to communicate with the MrSID library.
Cleanup methods are special lifecycle methods, and as such cannot be called outside the context of object creation and destruction. This means that in most cases, you cannot call the Cleanup method directly. There is one exception to this rule: If you write your own subclass of this class, you can call the Cleanup method from within the Init or Cleanup method of the subclass.
Obj->[IDLffMrSID::]Cleanup (Only in subclass' Cleanup method.)