[vtkusers] recommendation for displaying a 2D RGB image?

[kent williams]

This may be a stupid question, but ... I am working on converting a
legacy program from using FLTK for the GUI to KWWidgets.   With FLTK
his program draws an RGB image, and then displays it by calling the
FLTK function fl_draw_image.

I looked at the vtkImageViewer and vtkImageViewer2 classes but they
both take vtkImageData, and I'm not seeing how vtkImageData could
handle color images -- it seems to accommodate only scalars.