Sprite copy constructor

[Stupebrett]

Hello everyone! I've been using SFML for a few days, and when reading the tutorial about sprites, I came across this code snippet:

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class MyPicture
{
public :

    // This is the copy constructor
    MyPicture(const MyPicture& Copy) : Image(Copy.Image), Sprite(Copy.Sprite)
    {
        // This is the trick : we setup the sprite
        // to use our image, instead of the one of Copy
        Sprite.SetImage(Image);
    }

    // ... a lot of useful functions ...

private :

    sf::Image  Image;
    sf::Sprite Sprite;
};

The problem is just that I have no idea how to use it, and the tutorial doesn't explain it very well. I'm not too good with classes either, but I know how to use them. Any help would be greatly appreciated. I would also really appreciate if someone could post an example code using this copy constructor. Maybe that would help me understand it a little bit more. Thanks.

[Laurent]

Most of the copies are implicit (passing an argument, pushing an instance into a vector, ...). So you don't really have to "use" the copy constructor explicitely, it's just defined so that copying a MyPicture instance is well defined and works as expected, whenever it happens.

Here are examples where the copy constructor is invoked:

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MyPicture p1;
MyPicture p1 = p2; // same as MyPicture p1(p2)

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void func(MyPicture picture);

MyPicture p;
func(p);

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std::vector<MyPicture> v;

MyPicture p;
v.push_back(p);