如何调用.so中的类

class Base
{
public:
virtual ~Base() {}

virtual void show() = 0;
};

typedef Base* create_obj();
typedef void destroy_obj(Base*);

#include "myso01.h" #include <iostream> class ABC : public Base { public: void show(); }; void ABC::show() { std::cout << "ABC" << std::endl; } extern "C" Base* create() { return new ABC; } extern "C" void destroy(Base* p) { delete p; }

#include "myso01.h"
#include <iostream>
#include <dlfcn.h>

int main()
{
void* p_lib = dlopen("./myso01.so", RTLD_LAZY);
if (!p_lib)
{
std::cout << dlerror() << std::endl;
return 1;
}


create_obj* create_abc = (create_obj*)dlsym(p_lib, "create");

char* dlsym_error = dlerror();
if (dlsym_error)
{
std::cout << dlsym_error << std::endl;
return 1;
}

destroy_obj* destroy_abc = (destroy_obj*)dlsym(p_lib, "destroy");
dlsym_error = dlerror();
if (dlsym_error)
{
std::cout << dlsym_error << std::endl;
return 1;
}

Base* p_abc = create_abc();

p_abc->show();

destroy_abc(p_abc);

dlclose(p_lib);

return 0;
}

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