Executes additional finalization produres.
function InternalClose: Integer; virtual; abstract;
If the function succeed the return value is WCL_E_SUCCESS. Otherwise the method returns one of the WCL error codes.
The derived class must override this method to execute extra finalization procedures.
If the derived class does not need any extra finalization then the method must return WCL_E_SUCCESS result code.
Copyright (c) 2006-2019. All rights reserved.