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 -- View this message in context: http://forum.world.st/Old-smalltalker-is-slightly-lost-tp4191137p4191137.htm... Sent from the Pharo Smalltalk mailing list archive at Nabble.com.