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1997-10-06
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To all extensions developers :
Unlike the rest of the engine, the extension scheme will change for the final
release. Extension components will remain structured the same, with the
following exceptions :
- client applications will have to register themselves the extensions
they want to use. This registration will be a call to one additional
function defined in your component, which will itself call the engine
to "register" itself.
- You will need to call a special function to get a pointer to your
own root data within the extension block ( currently, you need to
place your own field, like 'kerning', in the extension record of
ttextend, then access it through face->extension->kerning, this
will be replaced by 'kerning = Extension_Get( face, extension_id )"
or something of the like..
All in all, you'll keep the same structure ( constructors, destructors,
and high-level API extensions ) with only a few additional things..
This should make the development and mix of several concurrent extensions
easier..
See you
- David Turner