[cairo] UserFontFace vs FtFontFace management (cairomm)

[Murray Cumming]

On Mon, 2008-12-08 at 09:48 -0600, Jonathon Jongsma wrote:
> If we stored the 
> wrapper object in the user_data of the C object, we could actually
> return the exactly same 
> wrapper in this case.

Do all cairo types have *_set_user_data() functions, such as this?:
http://www.cairographics.org/manual/cairo-scaled-font.html#cairo-scaled-font-set-user-data

Are they used for anything other than language bindings?


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