806 typedef PNG_CALLBACK(void, *png_error_ptr, (png_structp, png_const_charp));  typedef
807 typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, png_size_t));  typedef
808 typedef PNG_CALLBACK(void, *png_flush_ptr, (png_structp));  typedef
809 typedef PNG_CALLBACK(void, *png_read_status_ptr, (png_structp, png_uint_32,  typedef
811 typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32,  typedef
815 typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));  typedef
816 typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));  typedef
828 typedef PNG_CALLBACK(void, *png_progressive_row_ptr, (png_structp, png_bytep,  typedef
834 typedef PNG_CALLBACK(void, *png_user_transform_ptr, (png_structp, png_row_infop,  typedef
839 typedef PNG_CALLBACK(int, *png_user_chunk_ptr, (png_structp,  typedef
898 typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, (png_structp,  typedef
900 typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp));  typedef