[vtkusers] how about the vtkimagereader

[#YAN RI AN#]

	Hi:
	if I read the vtk image data file from local harddisk drive (the example of quarter):
	c:\Vtkdata\Data\headsq\
	using vtk class:
	  vtkImageReader *reader=vtkImageReader::New();
	 reader->SetFilePrefix("$VTK_DATA_ROOT/Data/headsq/quarter");

	how can I modify the red highlight & read the file from the correct path?
	could you filled the blank area
	reader->SetFilePrefix("                                                                      ");
		thanks very much.
		my e-mail address is :ps7278514b at ntu.edu.sg