Re: [Boost-users] boost::bind with derivated class

Subject: Re: [Boost-users] boost::bind with derivated class
From: Kraus Philipp (philipp.kraus_at_[hidden])
Date: 2011-09-24 12:15:49

Am 24.09.2011 um 18:08 schrieb Igor R:

>> myclass::mythreadmethod( const mysuperclass myobj ) {} // I need a copy of the object, so I don't set the reference operator &
>> mysuperclass is a pure virtual class. Now I create a derivate class with
>> class myderivate : public mysuperclass {}
>> and call
>> myderivate y;
>> myclass x;
>> x.mymethod( y );
>> The compiler breaks with the error, that myobj is a class with pure virtual methods. How I can call the bind methods with the correct object?
>> myobj is an object of the derivated class
> 
> No, it isn't of the derived class, it's an instance of the abstract base.
> When you pass an object by value, it gets "sliced". It's unrelated to
> Boost.Bind, it's just c++ rule.

Thanks for the hint, I will change my code

Phil