[cairo] [ANN]: CairoAda link added

[Anne et Damien Carbonne]

Behdad Esfahbod a écrit :
>> I met the same type of difficulties than others to create the binding 
>> for user fonts.
>> At the moment I did someting very similar to the C version with 
>> callbacks that can be attached or not.
>> I thought of creating an abstract base class, with virtual and pure 
>> virtual funtions (C++ naming!),
>> but did not find any satisfying solution.
>> The problem was to provide a default implementation for callbacks that 
>> can be NULL.
>>     
>
> Did you read my responses re this issue today and yesterday?
>
>   
Yes I did, but I didn't take time to analyse them completely yet.
When I'll have time, I'll try to change / improve all this.

Damien