C++动态库导出类，及使用

//dll内部 xxx.hclass XXX_API xxx ： public virtualXXX{//基类函数public:void functionOne();void functionTwo();//子类函数void functionTree();};extern "C" XXX_API virtualXXX *create();

//导出库定义

#if defined(_WINDOWS)#if defined(XXX_API)#define  XXX_API  __declspec(dllexport)#else#define  XXX_API  __declspec(dllimport)#endif#else#define  XXX_API#endif

//虚基类 virtualXXX.hclass virtualXXX{public:virtual void functionOne();virtual void functionTwo();};

//主程序加载dll#include <windows.h>#include <virtualXXX.h>typedef virtualXXX *(create)(void);int main(){HINSTANCE dllHandle = NULL;dllHandle = LoadLibrary("xxx.dll");create *classHandle = (create*)GetProcAddress(dllHandle,"create");virtualXXX * xxxHandle = (virtualXXX*)classHandle();xxxHandle->functionOne();xxxHandle->functionTwo();}