[vtkusers] How to select a point position with the mouse in a 3D rendering

[Syn3DDM]

Hi
I want to select a point position with the mouse. I know that 
vtkPointPicker is used to select a point by shooting a ray into a graphics
window and intersecting with actor's defining geometry, but i don't know how
to use this class !
Please if you have an explanation reply me.
Thank you in advance.
-- 
View this message in context: http://www.nabble.com/How-to-select-a-point-position-with-the-mouse-in-a--3D-rendering-tf3556093.html#a9929384
Sent from the VTK - Users mailing list archive at Nabble.com.