ActionScript 3.0 :: Generic Function To Place A Component On The Stage?

My requirement/need  is the AS3 code for placing any type of Component(viz., Button, CheckBox, ComboBox, ListBox, radiobutton, Slider, Scrollbar,Label,TextField, etc.,) on the stage with desired width,height, X and Y parameters(values) which we mention in "Properties" tab of Properties Window in flash. Hence, What i need is, (say)a generic ActionScript 3.0 method/function, which places any of the components present in "Components Panel" onto the stage. the function prototype or signature may be like this:

function addComponent(int <width>, int <height>, int <XPos>, int <YPos>)
 
t is a general query i think so. i.e., A basic programmer's task for defining a function for my requirement.I think,if I want to add a Button onto the stage at 100,100 pixel position and the button component's width and height are 50,50 respectively, (i.e., button.X=button.Y=100 && button.width=button.height=50).So, a button must be placed at 100,100, then, the sample code looks like this:

Button <btn_instance> = new Button();     //creates Button instance
<btn_instance>.addComponent(50,50,100,100);// properties of button.