[vtkusers] draw a region of interest using the mouse

[Mark Wyszomierski]

You can use vtkImageTracerWidget.
 Mark

 On 9/8/05, LI XIN <xli16 at jhem.jhmi.edu> wrote: 
> 
> Hello vtkusers,
> 
> I have a question about doing ROI using MFC and VTK. I have displayed the 
> image by assigning a vtkRenderWindow to a pre-existing window in my MFC MDI 
> app. Then I would like to use MFC's LineTo function to draw on the image 
> with mouse. But I found that it didn't work. It seemed that I could not draw 
> on a vtkRenderWindow.
> 
> What should I do?
> 
> Thanks!
> 
> Xin
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