Retrieves a snapshot of the contained widget in the form of a cairo_surface_t If you need to keep this around over window resizes then you should add a reference to it.
A cairo_surface_t pointer to the offscreen surface, or NULL.
2.20
Retrieves a snapshot of the contained widget in the form of a cairo_surface_t If you need to keep this around over window resizes then you should add a reference to it.