Why can't I move my generic constructor into a .cpp file?

Question

If I do this in a header file alone, it works fine:

generic<typename T>
ref class MyGenericClass
{
protected:
    T m_someInternalInformation;

public:
    MyGenericClass(void)
    {

    }
};

...but if I alter the .h file to look like this:

generic<typename T>
ref class MyGenericClass
{
protected:
    T m_someInternalInformation;

public:
    MyGenericClass();
};

...and a .cpp file like this:

#include "MyGenericClass.h"

MyGenericClass::MyGenericClass(void)
{

}

I get a compiler error:

1>MyGenericClass.cpp(4): error C2955: 'MyGenericClass' : use of class generic requires generic argument list

I've tried adding the generic definition about the constructor definition:

#include "MyGenericClass.h"

generic<typename T>
MyGenericClass::MyGenericClass(void)
{

}

...but I get the same error. What am I missing here?

Answer 1

Found the answer:

generic<typename T>
MyGenericClass<T>::MyGenericClass(void)
{

}

Note the <T> before the :: .