[vtkusers] Assign new position to point in vtkUnstructuredGrid

[Dirk Fressmann]

Hi

for being able to drag a node from an unstructured grid I have to assign 
new coordinates to this point within the callback function of the mouse 
events. Is there a way to do this, such that the geometry of the 
unstructured grid is being updated as well?

If you have any ideas, please help! I'm getting desperate!

Dirk