One way of eliminating C4251 warning when using stl-classes in the dll-interface

Question

It is not a good practice using stl-classes in the dll-interface as Common practice in dealing with warning c4251: class … needs to have dll-interface explains. An example i

Answer 1

OR do the easiest thing to do, move the __declspec to the ONLY members you care to export:

class HelloWorld
{
public:
    __declspec(dllexport) HelloWorld()
    {
        abc.resize(5);
        for(int i=0; i<5; i++)
            abc[i] = i*10;

        str="hello the world";
    }
    __declspec(dllexport) ~HelloWorld()
    {
    }
    std::vector abc;
    std::string str;
};