Dear users,
I tried to use vtkLabelPlacementMapper to manage many labels, but failed to get the info about which label was selected by mouse clicking. I used HardwareSelector，it could give which actor was selected (the actor corresponding to the label mapper), but always give the same number whichever label of the actor was clicked. Did not find any relevant info from the document. Please help teach me how to implement the right selection of the labels. BTW, the points or the corresponding glyphs can be correctly selected with the HardwareSelector. Thanks a lot!
Yongjin