how to use a c++ class that is exported to a dll?

Question

I have exported a C++ class and now i want to use its public member function. how i can do it?

I want to have dynamic binding. My exported class looks like this

#ifdef MAKEDLL
#define DECLDIREXP __declspec(dllexport)
#else
#define DECLDIREXP __declspec(dllimport)
#endif

class DECLDIREXP xyz 
{
public: 
    void printing(); 
    void printing(int a);
};  

using namespace std; 

void xyz::printing()
{
    cout<<"hello i donot take any argument";
}

void xyz::printing(int a)
{
    cout<<"hello i take "<< a <<"as argument";
}

Are you talking about problems with compiling or with linking? — spraff, Jul 27 '11 at 07:45
What is dynamic binding: do you want to use LoadLibrary + GetProcAddress instead of linking to the library .lib file? — Alex F, Jul 27 '11 at 07:45
Check this reply: http://stackoverflow.com/questions/6620791/exporting-classes-to-dlls/6622031#6622031 — Ajay, Jul 27 '11 at 07:54

score 0 · Answer 1 · answered Oct 25 '17 at 19:57

it seems you are almost there. When building the project generating the dll, make sure MAKEDLL is defined for the linker, and the other way round in projects consuming the dll.

By the way MAKEDLL is probably a bad Name, but MAKEFOODLL if your dll is called foo a better one

how to use a c++ class that is exported to a dll?

1 Answers1