Returns the render node that was constructed
by snapshot.
Note that this function may return null if nothing has been
added to the snapshot or if its content does not produce pixels
to be rendered.
After calling this function, it is no longer possible to
add more nodes to snapshot. The only function that should
be called after this is gobject.object.ObjectG.unref.
Returns the render node that was constructed by snapshot.
Note that this function may return null if nothing has been added to the snapshot or if its content does not produce pixels to be rendered.
After calling this function, it is no longer possible to add more nodes to snapshot. The only function that should be called after this is gobject.object.ObjectG.unref.