[cairo] Gotcha with dynamically allocated surface sources.

[M Joonas Pihlaja]

Hello Phil,
On Wed, 28 Sep 2011, Cope, Phil (GE Energy) wrote:
> There doesn't appear to a way of registering a callback to be executed
> when the surface reference count drops to zero, so I wonder how else
> application programmers are supposed to handle this situation ?
You should look at setting a destructor for your image  data using
cairo_surface_set_user_data().
Cheers,
Joonas