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[英]How do I call a class by passing it's object and member function to another function in c++?
[英]How do I handle message passing from one object to another that has a common abstract class in C++
我有一個基類 INotify,它有一個虛函數通知。 該方法由兩個類 Event 和 Receiver 繼承。 我想要一個方法 add() 在 Event 中添加容器中類 Receiver 的對象的引用,以便我可以使用它通過方法 notify 將消息傳遞給 Receiver 類,因為兩者都繼承了父 INotify 的公共屬性通知。 我對 C++ 不太了解,所以請給出解釋。 我已經附上了我的程序的基本框架。
using namespace std;
//Base Abstract class
class INotify
{
public:
virtual void notify(string msg)=0;
};
//Receiver class receives message from Event
class Receiver:public INotify
{
string message;
public:
void notify(string msg)
{
message=msg;
}
void display()
{
cout<<message;
}
};
//Event class that sends message to Receiver
class Event:public INotify
{
public:
Event()
{
}
void notify(string msg)
{
container[0].notify(msg);
}
INotify *container=new Event[1];
void add(Receiver &obj)
{
container[0]=obj;
}
};
int main()
{
Receiver recObj;//Create receiver object
Event eventObj;//create event object
eventObj.add(recObj);//adds reference of receiver object in container
eventObj.notify("Test Test"); //sends message to receiver object's notify method
recObj.display();//displays the message from receiver
}
更改您的事件類
//Event class that sends message to Receiver
class Event:public INotify
{
public:
Event()
{
}
void notify(string msg)
{
container[0]->notify(msg);
}
vector<INotify *>container;
void add(INotify &obj)
{
container.push_back(&obj);
}
};
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