[vtkusers] How to pick labels?

[rakesh patil]

Hello,

I am displaying a text using vtkLabelPlacementMapper. I have used the logic
as it is explained in

Rendering/Testing/CXX/TestLabelPlacementMapper2D.cxx

It is displaying, but after displaying i am not able to pick it. What picker
can i use to pick 2D label?

Thanks

Regards
Rakesh Patil
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