C/C++混合编程中的回调问题

版权声明：copyright@xxdk2017 https://blog.csdn.net/u011583798/article/details/79242622

/*************************************************************************
	> File Name: ptc.cpp
	> Author: XXDK
	> Email: [email protected] 
	> Created Time: Thu 01 Feb 2018 04:43:48 PM CST
 ************************************************************************/

#include<iostream>
using namespace std;

class Callback {
public:
	Callback(){std::cout << "Callback constructor" << std::endl;}
	void showCallback(void) {std::cout << "show target" << endl;}
	void rogerCallback(void) {std::cout << "roger order" << endl;}
	void detectCallback(void) {std::cout << "detect target" << endl;}
	void launchCallback(void) {std::cout << "weapon launch" << endl;}
};

class Eventsets{
public:
	Eventsets() {std::cout << "Eventsets constructor" << std::endl;}
	void (*show)(void) = NULL; 
	void (*roger)(void) = NULL; 
	void (*detect)(void) = NULL; 
	void (*launch)(void) = NULL; 
};

int main()
{
	Callback cb;
	Eventsets es;

	/**< c */
	void (*show) (void) = NULL;
	void (*roger) (void) = NULL;
	void (*detect) (void) = NULL;
	void (*lanuch) (void) = NULL;

	show   = reinterpret_cast<void (*)()>(&cb.showCallback); ///< test ok 
	roger  = reinterpret_cast<void (*)()>(&cb.rogerCallback); ///< test ok 
	detect = reinterpret_cast<void (*)()>(&cb.detectCallback); ///< test ok 
	lanuch = reinterpret_cast<void (*)()>(&cb.launchCallback); ///< test ok 

	show();
	roger();
	detect();
	lanuch();

	/**< c++ */
	es.show   = reinterpret_cast<void (*)()>(&cb.showCallback);
	es.roger  = reinterpret_cast<void (*)()>(&cb.rogerCallback);
	es.detect = reinterpret_cast<void (*)()>(&cb.detectCallback);
	es.launch = reinterpret_cast<void (*)()>(&cb.launchCallback);

	es.show();
	es.roger();
	es.detect();
	es.launch();
}