[vtkusers] modification of a vtkPoints in the method Execute for a CallBack Process

[youpie]

Hi,

I'm using a CallBack Procedure with Execute Method to associate event of my
widgetBox with my vtkPoints.
In fact when i use a vtkTransform obtained with widgetBox->getTransform
(vtkTrasnform) and after use it on the actor associated to the widget, My
actor move exaclty as I want when I move the widget.
But if I draw my vtkPoints I can see that points don't have changed. So How
can that be possible if my actor is moving ?
And if I use the vtkTransfor of the widget box to change directly the
coordonates of my points of vtkPoints, (whithout use the setUserTransform
method of my actor). I can see coordinates changing, but nothing appened on
the screen.

the hierarchy if :

vtkPoints + vtkExtraCells -> vtkPolyData->
vtkTubeFilter->vtkPolyDataMapper->vtkActor


Someone know why ? 
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