Dynamic Library: Do you need to export variables of a class?

[babaliaris]

Well I tried this but I get link errors.

DLL.h

#pragma once

#ifdef DLL_EXPORT
#	undef DLL_EXPORT
#	define DLL_EXPORT __declspec(dllexport)
#else
#	define DLL_EXPORT __declspec(dllimport)
#endif

Printer.h

#pragma once
#include <iostream>
#include <string>
#include "DLL.h"

class Printer
{

public:

	std::string m_msg;

public:
	Printer(std::string message);
	~Printer();
	void print();
};

DLL_EXPORT Printer *CreatePrinter(std::string message);

Printer.cpp

#include "Printer.h"



Printer::Printer(std::string message) : m_msg(message)
{
}


Printer::~Printer()
{
}

void Printer::print()
{
	std::cout << m_msg << std::endl;
}

Printer *CreatePrinter(std::string message)
{
	return new Printer(message);
}

Client.cpp

#include <Printer.h>

int main()
{
	Printer *p = CreatePrinter("Skata melata");

	p->print();

	delete p;

	return 0;
}

Link Errors:

1>Source.obj : error LNK2019: unresolved external symbol "public: __thiscall Printer::~Printer(void)" (??1Printer@@QAE@XZ) referenced in function "public: void * __thiscall Printer::`scalar deleting destructor'(unsigned int)" (??_GPrinter@@QAEPAXI@Z)
1>Source.obj : error LNK2019: unresolved external symbol "public: void __thiscall Printer::print(void)" (?print@Printer@@QAEXXZ) referenced in function _main

I don't really understand what you mean. Can you make me an example to see it? Maybe i'll understand this way.