<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div> I've created a small program to measure the distance between two points using vtkDistanceWidget. The only problem is I can only use it to measure distance once. </div><div><br></div><div><img height="448" width="504" apple-width="yes" apple-height="yes" src="cid:8B9C449E-B051-4832-AEA1-54CB3D466B77@du.ae"></div><div><b>Question 1:</b> How can I set up the program, so that I can take another measurement, while retaining the old measurement? Do I have to create two instances of vtkDistanceWidget and stored the object properties? </div><div><br></div><div><b>Question 2: </b>How can I edit a previously stored measurement? In the example program, once I've made a measurement, I cannot edit it again. </div><div><br></div><div>Best regards,</div><div><br></div><div>Elvis</div><div><br></div><div><br></div></body></html>