[vtkusers] VTK ballon widget does not show a ballon

seany fluidandsolidearth at gmx.de
Tue Dec 30 19:22:40 EST 2014

Hello, Merry Xmas, and Happy New Year

I am new with VTK, but I would hope that the following code would generate
two Squares, and one of them would be assigned to a ballon, and while
touching it with the mouse, will result in displaying the word " hello " --- 

However, no popup ballons are displayed.

What am I doing wrong? Please help-

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