Re: Inheritance in Pimpl idiom

"Igor Tandetnik" <>
Tue, 18 Mar 2008 08:06:23 -0400
"George" <> wrote in message

Why it is useless for any inheritance in Pimpl idiom? Here is the
source, but no detailed reasons are provided.

- make XImpl entirely the class that X would have been, and write X
as only the public interface made up entirely of simple forwarding
functions (a handle/body variant).

In this scenario, X only has public interface consisting of, presumably,
non-virtual functions. While you can, technically, derive from such a
class, there's no point doing so: it has no virtual function you could
override, and no protected members you could get access to.
With best wishes,
    Igor Tandetnik

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