* retreive copyright(s) for the corresponding bounding box and zoom level.
*/
void
-vik_map_source_get_copyright (VikMapSource *self, LatLonBBox bbox, gdouble zoom, void (*fct)(void*,const gchar*), void *data)
+vik_map_source_get_copyright (VikMapSource *self, LatLonBBox bbox, gdouble zoom, void (*fct)(VikViewport*,const gchar*), void *data)
{
VikMapSourceClass *klass;
g_return_if_fail (self != NULL);