Constructor and object intitiation

When we access "this \ Me" in the constructor of any class, how is it that "this" is already available while its yet getting constructed? Has a temp开发者_如何学Goorary creation of the instance already happened before the constructor call? If so then does this mean these Constructors are called after the actual object initialisation?

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the object is created and the memory is allocated before you initialize it with the constructor.... ex 1. you create the object;

MyObject myObject;

2. you initialize it

myObject = new MyObject();

these 2 steps are also done when you are doing this:

MyObject myObject = new MyObject();

Edit: in the constructor this goes for myObject

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In C++, when you have

Foo::Foo(int x)
: frob(x) {
    this->frob = x;
}

then the construction really happens exactly between then : and the first brace:

:<here>{

In the the body of that constructor, the object is fully constructed, therefore, using this there is well defined.