Origin Ver. and Service Release (Select Help-->About Origin): Operating System: FAQ: hello, i have a question. i am learning origin c/labtalk programming now. How to draw a rubber band rect on a graph by mouse moving. i want to control the rect and mouse event completely. i have read the offical help chm, but i cannot find the answer, just subtle issues in the chm. 1. derive a class and rewrite mouse move event? 2. offical API? 3. graphobject?