understanding dll

[marci...@gmail.com]

hi, i am new bie and have problem with dynamic linking in code blocks

i have 2 files:

DLL.dll:

headers:

AFYA_PRODUKT.h:

------------------------------

#ifndef AFYA_PRODUKT_H

#define AFYA_PRODUKT_H

#if OS==1 /* Linux */

#include <dlfcn.h>

#define HINSTANCE void *

#define SHARED_EXPORT extern "C"

#define LOAD_LIB(name) dlopen(name, RTLD_LAZY)

#define LOAD_SYM(lib,name) dlsym(lib,name)

#elif OS==2 /* Windows */

#include <windows.h>

# define SHARED_EXPORT __declspec (dllexport)

#define LOAD_LIB(name) LoadLibrary(name)

#define LOAD_SYM(lib,name) GetProcAddress(lib,name)

#else

#error  OS:  1 (Linux) or  2 (Windows)

#endif

extern "C"

{

 class SHARED_EXPORT   AFYA_PRODUKT

{

public:

    AFYA_PRODUKT();

    virtual ~AFYA_PRODUKT();

    void testT(int t );

};

    SHARED_EXPORT AFYA_PRODUKT*   CK();

};

#endif // AFYA_PRODUKT_H

--------------------

AFYA_PRODUKT.cpp

--------------------

#include "AFYA_PRODUKT.h"

#include <iostream>

extern "C"

{

SHARED_EXPORT AFYA_PRODUKT::AFYA_PRODUKT()

{

    std::cout<<"new AFYA";

}

SHARED_EXPORT AFYA_PRODUKT::~AFYA_PRODUKT()

{

    std::cout<<"del  AFYA";

}

void SHARED_EXPORT  AFYA_PRODUKT::testT(int t)

{

    std::cout<<t;

}

AFYA_PRODUKT* SHARED_EXPORT CK()

{

    return new AFYA_PRODUKT();

}

}

i compile it with additional data -DOS=2  //windows

and my test main.cpp file:

#if OS==1 /* Linux */

#include <dlfcn.h>

#define HINSTANCE void *

#define SHARED_EXPORT extern "C"

#define LOAD_LIB(name) dlopen(name, RTLD_LAZY)

#define LOAD_SYM(lib,name) dlsym(lib,name)

#elif OS==2 /* Windows */

#include <windows.h>

#define SHARED_EXPORT __declspec(dllexport)

#define LOAD_LIB(name) LoadLibrary(name)

#define LOAD_SYM(lib,name) GetProcAddress(lib,name)

#else

#error OS: 1 (Linux) or 2 (Windows)

#endif

#include <iostream>

#include ".....\cpp\afya_produkt\include\AFYA_PRODUKT.h"

using namespace std;

int main()

{

    HINSTANCE hDll;

    hDll = LOAD_LIB("libafya_produkt");

    typedef AFYA_PRODUKT*(  *pA)();

    pA Fx= reinterpret_cast<pA> (LOAD_SYM(hDll, "CK"));

    AFYA_PRODUKT* PR = Fx();

    int i=7;

///// and here i  become error, code::block shows, that i have function testT in my AFYA_PRODUKT class\\

but i can not compile program.... until i comment it, after this i comple program and see in normal in console my written constructor (new afya and del afya)

//    PR->testT(i);

    delete PR;

    return 0;

}

WHAT DO i wrong?

[Daniel Krügler]

2014-11-11 21:44 GMT+01:00 <marci...@gmail.com>:
> hi, i am new bie and have problem with dynamic linking in code blocks
> i have 2 files:

This is not the right newsgroup for this kind of questions. This
newsgroup discusses Standard C++. Dlls and other shared libraries are
not covered by the C++ Standard.

Thanks,

- Daniel