Re: Multiple inheritance and enable_shared_from_this

From: Jason Winnebeck (yg-boost-users_at_[hidden])
Date: 2003-07-18 16:50:28

I tried using enable_shared_from_this with virtual inheritance, just to 
see if it would work.  I couldn't get it to work.  The first barrier is 
that enable_shared_from_this is a templated class, and from what I 
understand is that two template instantiations of a class are two 
entirely different classes, so I didn't even try to use virtual on that.

Instead I tried to make the SharedThis class non-templated, and 
virtually inherit from that.  However it didn't work, because of pointer 
casting issues.  I'm not sure if this is what caused my errors, but I 
heard that you can't downcast from a virtual base class * to a concrete 
class without dynamic_cast.

Jason