>From KasperOsterbye: > > This post has NOT been accepted by the mailing list yet. > 15 years ago I did a lot in Smalltalk, and have done some recreational > meta programming along the way. However, I now wanted to do something > where I was in need of drawing a diagram with x and y axes on what I > presume might be called a Canvas. > > I lack a simple tutorial to get me started. I have looked at many, but > they seem to presume I want to draw on the world "openInWorld". I should > like not to scatter my world with line fragments and points, but keep it > inside a "normal" window with borders, a background color (i.e. not a see > through window). > I have gone dead in two approaches. > > First attempt is to use a SystemWindow, and then draw on the canvas I > presume is there somewhere. I have just not been able to figure out how to > find the canvas of that SystemWindow, nor what method presumeable does the > painting. > > Second attempt is to use a SystemWindow, and then add (addMorph:) line and > circle morphs for my diagram. But it seems something is missing in my > understanding there as well. > > While it is fun that I can open circles and other stuff in "world", it is > not what I need. > > Small hits or direct solutions more than welcome. > > -- Kasper >
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