BBTK_INPUT(BoxWidget,Renderer,"vtkRenderer",vtkRenderer*,"");
BBTK_OUTPUT(BoxWidget,ImplicitFunction,"vtkImplicitFunction",vtkImplicitFunction*,"");
BBTK_INPUT(BoxWidget,Renderer,"vtkRenderer",vtkRenderer*,"");
BBTK_OUTPUT(BoxWidget,ImplicitFunction,"vtkImplicitFunction",vtkImplicitFunction*,"");