"Full Block" character in example block not visible in Beamer PDF

[Loris Bennett]

Hi,

I have a command line tool which generates an ASCII histogram.  I would
like to include the output in a PDF Beamer presentation.

Currently I am using an 'example' block, thus:

  #+begin_example
  ...

  ---------------------
  CPU Efficiency (%)
  ---------------------
    0.00 -  10.00  [ 0]
   10.00 -  20.00  [ 0]
   20.00 -  30.00  [ 0]
   30.00 -  40.00  [ 0]
   40.00 -  50.00  [ 0]
   50.00 -  60.00  [ 0]
   60.00 -  70.00  [ 0]
   70.00 -  80.00  [ 1]  ▉                 
   80.00 -  90.00  [24]  ████████████████████                                   
                                         
   90.00 - 100.00  [48]  ████████████████████████████████████████               
                                         

  ...
  #+end_example

The blocks of the histogram are present in the PDF, but are white, like
the background of the slides.  I can see this by marking them with the
mouse.

Does anyone know what I need to do to make the full block character
visible in this situation?

Cheers,

Loris


-- 
This signature is currently under constuction.