How do you initialize ecal in a class?

[rlewkowicz]

I'm not a great c++ dev, I used ecal about 2 years ago and am playing with it now. I remember this last time. Before I go into a main loop I have a class:

class Mouse
{
public:
	explicit Mouse();
	void send(int x, int y);
	eCAL::CPublisher pub;
};

And I want to initialize this and then use send later to publish.

Mouse mouse = Mouse();

I'll go dig my old code but I recall this being a pain and I had to do goofy stuff to get this to work. What is the idiomatic way to initialize ecal?

[KerstinKeller]

Hi @rlewkowicz,
the problem in your case is, that eCAL Publishers / Subscribers cannot be copied (copy assigned / copy constructed).
This is a design decision, what happens if you copy a Publisher? Do you now have two Publishers, publishing on the same topic?

This is why we deleted the respective operators. However, this means, as the Publisher is part of your Mouse class, that class can't be copied either. This could be relevant if you want to store the Mouse in a container, but you could also construct it inside the container for example.

Better code would be:

Mouse mouse_1; // implicitly calls constructor
Mouse mouse_2("Mouse") // will publish on topic "Mouse"

[rlewkowicz]

Ty!