[vtkusers] AddObserver function

[b.jag at free.fr]

Hello

    I use the function AddObserver for the vtkInteractorStyleImage like in
AnnotatePick exemple:
http://www.vtk.org/pipermail/vtkusers/2004-October/077133.html


but i have this exception :

Exception in thread "main" java.lang.NoSuchMethodError: startZoom()
        at vtk.vtkObject.AddObserver(Native Method)
        at Sphere.<init>(Sphere.java:84)
        at Sphere.main(Sphere.java:100)


Thanks in advance

Benoit Jager