[vtkusers] 3d view in tkrenderwidget

[Josh Snyder]

Hi,

When using a vtkTkRenderWidget, I can't switch to 3d view using the 3 
key. If I try this with just a vtkRenderWindow and 
vtkRenderWindowInteractor it works fine, but if I use a TkRenderWidget, 
it switches for about a second, then switches back to normal view. Does 
anyone know why this is happening? Thanks,

Josh