moving from interface class to implementation class

[Bernd Daum]

Hi everybody!

Since implementation classes are derived from
skeleton classes and they are derived from the
stub classes, it's something difficult, to get
a pointer to the implementation object.

Example:

IDL:

interface A {.....};

C++:

class A_i: virtual public _sk_A {};

If i have an object reference ('ref') for an A and
want to get an pointer ('p') for the implementation
object, i usually use the C++ dynamic cast:

A_ptr ref;
A_i* p = dynamic_cast<A_i*>(ref);

My problem:
-----------
We are currently working on a Digital Unix platform using
the DEC C++ Compiler, version 5.5, which doesn't support
the C++ dynamic cast.

Is there anybody who knows, how to cast from an interface class
to an implementation class without using the C++ -
dynamic cast (other Orbs offer for this case macros)?

Thank you in advance.

Bernd Daum

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Dipl.-Ing. Bernd Daum                            DDDD          K   K
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