how to add comments to files (themselves)?

Hi list,

 From within GQview, I would like to add comments to my images. However, 
I would like to save these comments directly in the images (using the 
COM field of the JPG header or the EXIF comment field).

I had hoped that the "Comment" section in the keywords dialogue might be 
configurable accordingly, but it seems that it always stores the 
comments separately in the metadata text files.

Using GQview's awesome external editor functionality, I have tried 
various voodoo using 'jhead -ce' and 'wrjpgcom' - in the hope that I 
would get an external editor window to open into which I could write my 
comment. However, I didn't get this to work.

Any ideas on how this could be implemented?

best,
flo.H

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