[vtkusers] Is there a widget like vtkDistanceWidget for a single position?

[Martin Raabe]

Hello folks,
I want to mark distances and single points in the scene.
For that I use vtkDistanceWigdet for a distance.
Is there a widget to place and manipulate a single position in the
manner of positioning a distance by two positions in vtkDistanceWidget?

I use vtk 5.10.1 on the PC.

TIA

Martin