I have checked RTDirectedLine and it is not supposed to use the way you want. Basically RTEdge is the object you want to manipulate with. I do not know what is the objective of your example. But there is way how you could write it. -=-=- | v elements models | models := (10 to: 60 by: 1). v := RTView new. elements := (RTEllipse new size: #yourself; color: Color red) + RTLabel elementsOn: models. v addAll: elements. RTEdge buildEdgesFromObjects: models from: #yourself to: [ :i | i // 2 ] inView: v. RTGridLayout on: elements. elements @ RTDraggable. v @ RTDraggableView. v canvas color: Color black. v open. -=-=- Cheers, Juraj On Sep 12, 2014, at 5:03 PM, kilon alios <kilon.alios@gmail.com> wrote:
Ok here comes the first question
how I change the background color of RTView ?
also
when I do this
v := RTView new. shape := RTEllipse new size: 20; color: Color red. shape := shape + RTLabel. es := shape elementOn:'hello'. v add: es. line := RTDirectedLine new pointsFrom: 20@20 To: 30@30. es2 := line element.v add: es2. es @ RTDraggable. v @ RTDraggableView . v open.
I am getting an error
MNU Array >> element
why ?