From: anne001 Date: 2006-02-21T09:38:34+09:00 Subject: can opengl work with an object method? I started with robot.rb in the sample folder of opengl-0.32g It comes with a display proc: display = Proc.new {} which is called by a glut function GLUT.DisplayFunc(display); When I place the exact same code in a method class Node def traversetree end end upperarm = Node.new GLUT.DisplayFunc(upperarm.traversetree); displays the image in a different size, and does not respond to resize or keyboard keys Any option?