How to create a loop for my problem? Please read for more detail.

Question

Hi guys,
I am doing my project and currently i faced one problem and that is more towards looping i guess. My project is about embedding and I had done all the embeding stuffs already but I am only able to embed my barcode into image at starting at coordinate 0,0.
What i want to know is how do i had to structure my loop so that i can embed my barcode even when i start at x=20 and y=30 for example?
currently i used nested for loop which is why i can only start at 0,0.
I wanted to make it something like this:
for<lets make it x=20>
for<lets make it y=30>
<my code retrieve pixel at x=20 y=30>
<my code retrieve pixel of barcode at x=0 y=1>
end
end
end
I wanted to have something like above where i can start at 20,30 but at that certain cooridnate i will starting retrieve barcode pixel at 0,0.

Answer 1

So just say what you don't know how to do, because what I showed is exactly what you need.
So please answer the following:
1.) I have an image of my barcode and I don't know how to paint it onto another image.
or is it
2.) I have a routine that draws a barcode at a fixed location and I don't know how to get it to draw anyplace I tell it.
or
3.) I don't have anything yet, and I want someone to code this for me.
or it is
4.) Les you don't have any idea what I want to do, so here is what I need (pay more attention):
but in any case (well except #3), you'll be better off if you can give us some code to look at and explain what you are specifically trying to do and where you are having problems.