[Lazarus] IUnknown and reference counting

[Hans-Peter Diettrich]

Sven Barth schrieb:

>  > Interface delegation is something different from multiple 
> inheritance. The interface implementor and the interfaced object then 
> have nothing in common, the methods of the implementor cannot access 
> elements of the interfaced object.
> 
> But with only interfaces you inherit merely the syntactical "interface" 
> while with delegation you can also reuse an existing implementation for 
> that interface.

Use an object (class instance) for the same purpose, and you don't have 
to write additional code as well.

DoDi