[news.eclipse.tools.gef] How to draw a line?

["Brandon" <brandonchen@xxxxxxxxxxxxxx>]

I want to draw a line. Here are the problems I met.

1. The line supposed to be no connections to any other figures. So it seems
that I should not try connection editpart, anchors...
2. The line should have no constraint on it. What am I suppoed to do if the
constraint returns null?
3. If the line has a constraint on it, I  can draw the line from left-top to
right-bottom. However, drawing the line from its constraint has some
problems. If I want to drag a line from (left-top/right-bottom) to
(left-bottom / right-top), I would not be able to do so. The constraint is
restricted to draw once the constraint area is zero.

Please give some ideas about how to draw a line. What policy, editpart and
class I shoudl use? Appreciated for any reply. Thanks


Brandon