[vtkusers] How to set "$VTK_DATA_ROOT"?

[John Drescher]

2009/10/18 ׿ºìÓá Êý×ÖÒ½ÁÆÈí¼þ <zhuohongyu at modern.org>:
>
> Hello,
>       I always double click the file of its file extension is tcl , for example, vtk\Examples\GUI\Tcl\ProbingWithPlaneWidget.tcl, but always show the message: file not found.  This file include "$VTK_DATA_ROOT/Data/combq.bin" , but in fact the path of file is:"E:/Data/combq.bin".  The question is how to set the VTK_DATA_ROOT ?
>

cmake-gui when you built vtk