Clarification about this

[procastination]

Say if i have a function like:

void SceneNode::attachChild(Ptr child) {     

child->mParent = this;     
mChildren.push_back(std::move(child)); 

}

Does this means that the "this" keyword is the function itself or the whole class itself?

In some blog I found this one

Every object in C++ has access to its own address through an important pointer called this pointer. The this pointer is an implicit parameter to all member functions. Therefore, inside a member function, this may be used to refer to the invoking object.

So "this" is the member function? Im a little confuse. I thought it was the whole class?

[MiiNiPaa]

So "this" is the member function?

No, it is an implicit parameter which can be used in class member functions. Internally all member function looks like:

class foo
{
    int doSomething(double d);

//...
//Internally:
int foo@doSomething(foo* this, double d)

Also there something that makes me wonder: what is the type of Ptr in your code?

[procastination]

Ow thats was a typedef of smart pointer.

So i am doing a recursion here. I am passing the class to its own variable?

[MiiNiPaa]

I do not see recursion in your code, and it looks like sensible code: you are setting pointer to the parent in passed child to yourself and store it as own child.
If mParent is non-owning pointer then everything should be all right.