[vtkusers] How to annotate a screen with more than one distance measurement using vtkDistanceWidget

[Elvis Dowson]

Hi,
         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.


Question 1: 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?

Question 2: How can I edit a previously stored measurement? In the  
example program, once I've made a measurement, I cannot edit it again.

Best regards,

Elvis


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