Henry, Oleg already offered very good explanation to 2) (you use 0-index), what I want to add is to answer your question, >why does a mbldown event result
because isigraph received a mbldown message. The message can be sent by window os when you press mouse button or use sendmessage/postmessage api. In this case it is the sent by api. Communication using message is a lagacy from window 3.1, now there are more and much better (but not so simple) choices. -- regards, bill ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
