Nick Zitzmann wrote:
On Mar 2, 2009, at 12:38 PM, jeff...@aol.com wrote:
My program uses a custom file type and I was wondering how to make
sure my extension is unique. On Apple's Data Type Registration page
they only register creator codes. They no longer register file
types. What about file extensions?
I think the best you can do here is use Google and see if there are any
references to your preferred extension out there. I don't think there is
any central repository of file extensions out there, because there is no
way that could be controlled across platforms. But only Apple operating
systems use creator codes, which is why Apple has had a registry for years.
There is a database at <http://filext.com/>, though failing to find an
extension there does not prove that the extension is not in use.
As for type codes, you can use them however you wish; there are a few
standards, like 'TEXT' and 'PDF ' you should probably avoid with a
proprietary file type, but you probably knew that. Only the creator code
really matters.
Also, don't use all lower case for either the type or the creator, as
those are reserved to Apple.
--
James W. Walker, Innoventive Software LLC
<http://www.frameforge3d.com/>
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