c++call back

標籤：window   ptr   virt   printf   ***   view   argv   har   call   

#include "stdafx.h"struct A;typedef void(A::*MemFuncPtr) (int* e);class A{    int a;}; class View : public A{public:    virtual void test() { printf("test A\n"); }};class Window : public View{public:    virtual void test() { printf("test A\n"); }    void func(int * b) { (void)b; printf("************\n"); }};typedef void(*HandlerNoParam)();typedef void(*Handler1Param)(void* receiver);typedef void(*Handler2Param)(void* receiver, int* e);void test1(){    printf("no parameter test:\n");}void test2(void* receiver){    (void)receiver;    printf("1 parameter test:\n");}void test3(void* receiver, int* e){    (void)receiver;    (void)e;    printf("2 parameter test:\n");}int _tmain(int argc, _TCHAR* argv[]){    Handler2Param p0 = (Handler2Param)test2;    p0(NULL, 0);    MemFuncPtr p = (MemFuncPtr)&Window::func;    Window a;    (a.*p)(NULL);    getchar();    return 0;}

 

c++call back