[vtkusers] a question about save vtkRenderWindow as JPEG file...

[Wenlong Wang]

Do you mean you want to save a screenshot?

2011/10/26 steelblue <812075761 at qq.com>

> hi everyone:
>
>   i have problem about save vtkRenderWindow as JPEG file,
>   this is my code:
>
>                 vtkRenderWindow
> renWin=vtkpanel.getRenderWindow();//vtkpanel is a vtkPanel
>                 vtkWindowToImageFilter w2i =new vtkWindowToImageFilter();
>                 w2i.SetInput(renWin);
>                 w2i.Modified();
>                 vtkJPEGWriter writer =new  vtkJPEGWriter();
>                 writer.SetInput(w2i.GetOutput());
>                 writer.SetFileName("f://vtk.jpg");
>                 writer.Write();
>
>  but the result only a JPEG file that is black,total black ,,..
>
>  the problem bothered me so much,,who can give me a solution......
>  thanks so so much!!
>
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