COM 学习（一）
简单模拟，非真实COM组件#include <iostream>#include <objbase.h> using namespace std;////接口定义//interface IX{virtual void __stdcall Fx1() = 0 ;virtual void __stdcall Fx2() = 0 ;} ;interface IY{virtual void __stdcall Fy1() = 0 ;virtual void __stdcall Fy2() = 0 ;} ;////组件实现//class CA : public IX, public IY{public:virtual void __stdcall Fx1() {cout << "CA::Fx1" << endl ;}virtual void __stdcall Fx2() {cout << "CA::Fx2" << endl ;}virtual void __stdcall Fy1() {cout << "CA::Fy1" << endl ;}virtual void __stdcall Fy2() {cout << "CA::Fy2" << endl ;}} ;////客户，只能通过接口调用COM组件//int main(){CA* pA = new CA ;IX* pIX = pA ;//作用是什么？pIX->Fx1() ;pIX->Fx2() ;IY* pIY = pA ;//作用是什么？pIY->Fy1() ;pIY->Fy2() ;delete pA ;system("pause");return 0 ;}
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