I created a two layer picture in PSP7,
then I downloaded the example picture from Terry.
Total Commander with its built-in thumbnail view had no problems
with my own psp file, I see both layers in the thumbnail.
Terry's picture is shown as a bright white background with
red text along the upper side. My PSP7 could not open
the file, so I could not check if the thumbnail looks like
the picture.
I had a few video clips in the same folder and I was surprised
to see TC showing thumbnails of the video clips too.
I found out that the thumbnail it shows is a picture from
the middle of the clip, which is very good idea.
I tried it on a dir with many video clips, and it was rather
slow to create thumbnails for video, one per second.
I tried scrolling while it was creating thumbnails, and it
reacted perfectly, it started creating thumbnails for the videos
I had scrolled down to.
After TC has built its index it is immediate in its response.
I can see the content of any folder as thumbnails, it even
shows text files as text on a paper, whenever
I want to, and I can configure the viewer acticated by a
doubleclick, Irfanview or XnView, and add other tools, graphic editors,
in the rightclick menu in windows. The Send-to and Open-with
menues you get by rightclicking and holding for a second
in TC. Or drag-n-drop file to PSP or Pixia in the toolbar in TC.
My search for the perfect thumbnail viewer is over, it is
built into my favorite file manager TC.
Firegraphic 6 showed one thumbnail for the first folder,
and it was the PSP7 file I had created.