Function cairo_sys::cairo_mesh_pattern_get_control_point

pub unsafe extern "C" fn cairo_mesh_pattern_get_control_point(
    pattern: *mut cairo_pattern_t, 
    patch_num: c_uint, 
    point_num: cairo_mesh_corner_t, 
    x: *mut c_double, 
    y: *mut c_double
) -> cairo_status_t