[vtkusers] info vtkimageplanewidget

[Lazzarato Dr. Gianni]

hi. i'm a new vtk user.
i bougth all vtk books but i have a question.
i need to control the window/level values by a scroll bar and i tried all the example in the vtk cd.
using vtkimageplanewidget window/level values are varied trougth dx mouse button, but i see in the documentation that there is a private method to change these values using a variable( vtkimageplanewidget  windowlevel (x,y)) .
i know it is possible via vtkimageviewer, but not in vtkimageplanewidget........
it is possible to use vtkimageplanewidget private method and  in what way? and what is the differenze to use public o private method in a class?
sorry for my litthe school english but this question was not quite clear in the vtk books.
thank you in advance

dott. gianni lazzarato
italia


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