SDL(Simple DirectMedia Layer)是一个跨平台的多媒体和游戏开发包,提供2D,音频,事件驱动,多线程和定时器 等服务,并有大量的扩充开发包,如TCP/IP网络,游戏角色,混音等.SDL是用C开发的,但也有Perl,PHP,Delphi等多种语言的版本.-The source code to this release has been signed by Sam Lantinga. You can get the public key from any keyserv