I have another question.

Is there any principal difference between these two approaches (besides exposing the property of a child class to its parent):

Parent class

this.oChild = newobject('ChildClass','Classlib.vcx')
this.oChild.oParent = this

----------------
And

this.oChild= newobject...
this.oChild.Initialize(this)


Initialize method of the Child class

lparameters toParent

this.oParent = toParent