pub unsafe extern "C" fn gtk_snapshot_append_radial_gradient(
snapshot: *mut GtkSnapshot,
bounds: *const graphene_rect_t,
center: *const graphene_point_t,
hradius: c_float,
vradius: c_float,
start: c_float,
end: c_float,
stops: *const GskColorStop,
n_stops: size_t,
)