As you guessed, the icon locations are stored in the registry.
There's a key under HKEY_CLASSES_ROOT for each
registered file type, with a default value holding the class name.
Under the class name, there's a DefaultIcon key that gives
the path to the icon. Using python files an an example, you
have HKCR\.py with Default=Python.File, and under
HKCR\Python.File\DefaultIcon, you should have the
path to py.ico. You can use the _winreg module to create
your own entries.
hth
Roger
"c d saunter" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
> Greetings All,
> In Widows Explorer there is a thumbnail view, where you see images as
> thumbnails.
> Applications such as MS Office and OpenOffice, when installed, cause their
> respective filetypes
> to be previewed as thumbnails as well.
>
> Thumbnails are stored in the Thumbs.db hidden file.
>
> There my knowledge ends. I'm asuming that aplications install registry keys
> somewhere that
> register an invocation that returns a thumbnail for a given file bit this is
> just a guess.
>
> What I'd like to do is write some Python script that can be invoked to add
> thumbnails for
> certian file types (my own custom types and things like the .FITS array
> format.)
>
> Googling isn't going anywhere so I am hoping there are some wizards out there
> with poiters...
>
> Specifically any information on how the thumbnail system works would be great!
>
> Cheers,
> Chris
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