Re: Link error

I created a function to perform some tasks on vectors, and saved it in a
file named VectorHelper.cpp:

//
// VectorHelper.cpp
//

#include "StdAfx.h"
#include <VectorHelper.h>

template< typename T >
void vector_push_elements(vector<T>& vObject, int pos, T* elements, int
sizeInElements)
{
    vector<byte> chunk;
    chunk.resize( sizeInElements );
    memcpy( &chunk[0], elements, sizeInElements / sizeof(T) );
    vObject.insert( vObject.begin() + pos, chunk.begin(), chunk.end() );
}
// -----------------

And created a header for it:

//
// VectorHelper.h
//
#include <vector>

using namespace std;

template< typename T >
void vector_push_elements(vector<T>& vObject, int pos, T* elements, int
sizeInElements);
// -----------------

on my class which uses the function:

#include <VectorHelper.h>

.
. some code before
.
vector_push_elements<byte>( stream, 0, (byte*)strPrivateKey.c_str(),
strPrivateKey.size() );

When I build the app (Visual Studio 2008), I get the error

error LNK2019: unresolved external symbol "void __cdecl
vector_push_elements<unsigned char>(class std::vector<unsigned char,class
std::allocator<unsigned char> > &,int,unsigned char *,int)"
(??$vector_push_elements@E@@YAXAAV?$vector@EV?$allocator@E@std@@@std@@HPAEH@Z)
referenced in function "public: static bool __cdecl CMyClass::MyMethod

If I insert the function body in MyClass.cpp, it works fine. What am I doing
wrong?