main.cpp

设计模式

#include "Application.h"
#include "OpenCommand.h"
#include "PasteCommand.h"
#include "Document.h"

//将一个请求封装为一个对象，从而使你可以用不同的请求对客户进行参数化；
//对请求排队或记录请求日志，以及支持可撤消的操作

int main()
{
	Application* myApp = new Application;
	Command* cmd = new OpenCommand(myApp);
	cmd->Execute();

	Document* myDoc = new Document("Oops");
	cmd = new PasteCommand(myDoc);
	cmd->Execute();
//...
	delete myApp;
	delete myDoc;
	delete cmd;

	return 0;
}