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#include<stdio.h> #include<assert.h> #include "vector" #define AfxGetApp() KSingleton<CWinApp>::GetSingleton() #define DEBUG template<typename T> class KSingleton { private: static T* ms_pSingleton; public: KSingleton() { assert(NULL == KSingleton<T>::ms_pSingleton); KSingleton<T>::ms_pSingleton = (T*)this; } ~KSingleton() { KSingleton<T>::ms_pSingleton =NULL; } static T* GetSingleton() { return ms_pSingleton; } }; /*static*/ template<typename T> T* KSingleton<T>::ms_pSingleton = NULL; class CWinApp : public KSingleton<CWinApp> { public: void Print() { printf("hello\n"); } }; CWinApp theApp; void main() { //KSingleton<CWinApp>::GetSingleton()->Print(); //위에서 메크로 적용 AfxGetApp()->Print(); #ifdef DEBUG //cmd char e; scanf("%c",&e); #endif } |