What did "this->" do again?

Answer 1

this = pointer of the object you are in
for exemple you get a class call Base you maybe want to create a new objet (call Otherclass) taking as parameter a Base class so you use "*this" to have your Base class. the Otherclass constructor will look like: Otherclass(Base baseclassobject)
And then in Otherclass you can access to your Base member.

this-> Will access membre of your Base class (Var for example)

Correct me if wrong

Answer 2

this-> is used to point a variable ( it is know as this pointer) . Correct me if I'm wrong :)

Answer 3

I think for constant things... Like dont use : for const number and functions???

Not sure sorry...