[news.eclipse.modeling.gmf] need help on GMF graphic definition, how to

["Bo Liu" <diablo47@xxxxxxxxx>]

Hi Everyone,

I am new to GMF, and I managed to implement a simple editor following the 
tutorials.

But when I moved to define my own figures, I get confused in the several 
layout choices and their attributes ...
What I want is simply like this:
©°©Ð©Ð©¤©¤©¤©¤©¤©´
©¦©¦©¦  label   ©¦
©¦©¦©¦          ©¦
©¦©¦©¦          ©¦
©¸©Ø©Ø©¤©¤©¤©¤©¤©¼

is there anyway to add a line into a rectangle from the graphic definition?
Add a line as a child to the rectangle and then how to define its position?
Or I have to write code for it (I have seen some sample code but I can't 
find it right now...)?

Then how about the graph like this:
(add a rectangle as child, and then add a polyline into it?)

©°©Ð©Ð©¤©¤©¤©¤©¤©´
©¦©¦©¦  label   ©¦
©¦©¦©¦      ©°©¤©È
©¦©¦©¦      ©¦X ©¦
©¸©Ø©Ø©¤©¤©¤©Ø©¤©¼

I am not quite clear about the several layout styles(xy,grid,flow...), is 
there any documents about this?

Your help will be much of my appreciation.

We need a book about GMF!!

Cheers

Bo Liu