#include <dlfnc.h>
#include <iostream>
using namespace std;

class MyModule {
   virtual void Print() {}
};

typedef MyModule* EntryArea();
typedef void DestroyArea(MyModule*);

struct MyStruct {
	MyModule* Object;
        void* DLHandle;
        EntryArea* Entry;
        DestroyArea* Delete;
};

class ParentClass {
	private:
	struct MyStruct Classes[5];
	string Shared; 
	public:
	void Load() {
           Shared = "./test.so";
           Classes[0].DLHandle = dlopen(Shared.c_str(),RTLD_NOW);
           Classes[0].Entry = (EntryArea*) dlsym(Classes[0].DLHandle,"create");
           Classes[0].Delete = (DestroyArea*) dlsym(Classes[0].DLHandle,"destroy");
           Classes[0].Object = Classes[0].Entry();
        }
        MyModule* GetObject() {
           return Classes[0].Object;
        }
};


int main() {
	ParentClass clClass;
	MyModule* Child;
	clClass.Load();
        Child = clClass.GetObject();
}  



---- contents of test.so ---- 
#include <iostream>
using namespace std;

typedef MyModule* EntryArea();
typedef void DestroyArea(MyModule*);

struct MyStruct {
	MyModule* Object;
        void* DLHandle;
        EntryArea* Entry;
        DestroyArea* Delete;
};

class MyModule {
   virtual void Print() {}
};


class TestModule : public MyModule {
          public:
          void Print() {
             cout << "Test" << endl;
          }
};

extern "C" MyModule* create() {
    return new TestModule();
}

extern "C" void destroy(MyModule* m) {
    delete m;
}