[Gimp-developer] Alpha channels

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1) How do I create an image with an alpha channel (and set the value
   of the alpha channel)?  This is specifically so I can test alpha
   channel handling in Gimp-print.  Specifically, I want to move the
   alpha channel handling (and the color map handling, but that's a
   lot easier) out of libgimpprint and into the plugin.

2) It appears that thumbnail images (via
   gimp_image_get_thumbnail_data) always contain an alpha channel
   (unfortunately, this isn't really what I want for (1)).  Is there a
   reason this is the case, or am I missing something?

-- 
Robert Krawitz                                     <rlk@xxxxxxxxxxxx>      

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lpf@xxxxxxxxxxxx
Project lead for Gimp Print   --    http://gimp-print.sourceforge.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton

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