Find out most derived class in base class

[Steven Schveighoffer]

On Fri, 19 Nov 2010 15:54:08 -0500, Michal Minich  
<michal.minich at gmail.com> wrote:

> On Fri, 19 Nov 2010 20:50:13 +0000, Michal Minich wrote:
>
>> How do I solve this, without parametrizing class.
>>
>> class Base {
>>     void foo () { I want get somehow to type *Derived2* at CT }
>> }
>>
>> class Derived1 : Base { }
>> class Derived2 : Base { }
>
> By making mistake, I realized that it is not possible :) The last line
> should be:
>
> class Derived2 : Derived1 { }
>
> The *Base* has two most derived classes in the first example.
>
> Anyway, is it somehow possible to iterate derived classes if I only know
> base class? At CT.

No.  You don't know all the derived classes until link time, and there's  
no doing anything except linking at link time.

You should be able to find out at runtime which classes are derived from  
Base.

-Steve