C++: Compiler error overriding function from DLL - c++

Question

I am attempting to override an abstract class that has been declared inside a DLL in another project, however, when I try to init the overriding class, I receive compilation errors.
These are visual studio projects, as such,the built-in compiler of visual studio are used to compile all code.
I have a template class in a DLL:
#ifndef __IINPUT_RECEIVER_H_
#define __IINPUT_RECEIVER_H_
#ifdef HUMANINTERACTION_EXPORTS
#define HUMANINTERACTION_API __declspec(dllexport)
#else
#define HUMANINTERACTION_API __declspec(dllimport)
#endif
namespace HumanInteraction
{
template<typename T>
class HUMANINTERACTION_API IInputReceiver
{
public:
virtual ~IInputReceiver()
{}
/**
* Called when new input is received
*/
virtual void onInput(const T& refInput) = 0;
};
}
#endif
In another project which is to use this DLL, I inherit from this class and override its method, like so:
class Receiver : public IInputReceiver<wchar_t*>
{
public:
/**
* Called when new input is received
*/
virtual void onInput(const wchar_t*& refInput)
{
wstring str(refInput);
wcout << L"Received: " << str << endl;
}
};
But when I try to init an instance of class Receiver I receive the following compilation error; I am omitting unrelated logs:
1>c:\users\dominik\documents\visual studio 2013\projects\profile\profile\profile.cpp(25): error C2259: 'Receiver' : cannot instantiate abstract class
1> due to following members: 1> 'void
HumanInteraction::IInputReceiver::onInput(const T &)' : is abstract
The line profile.cpp(25) attempts to init an instance of Receiver, like so - nothing special here:
Receiver receiver;
Of course the compiler is right that onInput in the base class in a pure virtual function, however, I override this function in my derived class. Therefore, the class Receiver is not abstract as the log indicates.
Though usually I tend to fix my issues on my own, I have absolutely no clue whatsoever this time why this error is occuring - absolutely void.
I would greatly appreciate any contribution to this problem, even if it is 'only' comments.

Answer 1

The signature of the virtual member function in the base class is
virtual void onInput(const T& refInput) = 0;
The one in the derived class is
virtual void onInput(const wchar_t*& refInput)
What you need to use is:
virtual void onInput(wchar_t* const& refInput)
It will make more sense if you use
virtual void onInput(T const& refInput) = 0;
in the base class.