[vtkusers] cannot not zoom using vtkFlRenderWindowInteractor

[John Durkin]

Dear vtkUsers,

I'm just running the example code Cone3.cxx given under
vtkFlRenderWindowInteractor.  I can't zoom using the mouse scroll
button.  I've tried

vtkInteractorStyleSwitch *inStyle  = vtkInteractorStyleSwitch::New();
	inStyle->SetCurrentStyleToTrackballCamera();

   flrwi->SetInteractorStyle(inStyle);


to change the interaction style but it still doesn't let me zoom.
Please let me know if there is some way to fix this.

I'm using vtkFlRenderWindowInteractor version 1.02 and Fltk version 1.1.9


Thanks,

John Durkin