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

[Martin Raabe]

Hello Yumin,
I'm afraid I didn't express good enough what I desire.

I retry:

When I use the vtkDistanceWidget, I can position the mouse and click
with the left button, to mark on end of the distance measuring line. By
a second click I can position the other endpoint.
Then I have a label and position information of the end points can be
retrieved for world and display coordinate systems. Also a crosshairs is
rendered.

Similar functionality can be found in the vtkAngleWidget.

Now I look for a widget wich just lets me position a single point on the
screen and have a label and crosshairs rendered.

vtkPointWidget is not such a widget.

Do you have any idea?

Take care

Martin