[vtkusers] point picking

[Arindam Bhattacharya]

hello,
       I have some problems with pint picking. My idea is that I want to
click and select points in the renderwindowinteractor object.. but it
seems the mouse buttons do things like rotate and zoom. How do I select
points on a screen and get their 3D world co-ordinates. do I have to trap
an event like in OpenGL..

thanks

Arindam