在屏幕上移动一幅图象： world.gif作为背景,car.gif作为移动物体,且被绘制了两次,造成 一个两辆车比赛的场景。 -Double-buffering technology: Another reducing flicker between frames is to use double buffering, which in many animation applet Was used.

IrfanView is a very fast, small, compact and innovative FREEWARE (for non-commercial use) graphic viewer for Windows 9x, ME, NT, 2000, XP, 2003 , 2008, Vista, Windows 7. It is trying to be simple for beginners and powerful for professionals.

IrfanView is a very fast, small, compact and innovative FREEWARE (for non-commercial use) graphic viewer for Windows 9x, ME, NT, 2000, XP, 2003 , 2008, Vista, Windows 7. It is trying to be simple for beginners and powerful for professionals.

GG即时通讯系统GGTalk，包括客户端、服务端、数据库，可在广域网部署使用。支持：文字/语音/视频聊天，文件传送，离线文件，离线消息，视频会议，性能稳定，绝不是一个玩具或demo。 GG即时通讯系统GGTalk 5.5 源码版 更新日志：2016-12-06 增加对MySQL数据库的支持。 已实现的功能： （01）注册、登录、查找用户、添加好友、好友列表。 （02）自拍头像。 （03）文字聊天、字体设置、GIF动态表情、窗口震动、截图、手写板、登录状态（在线、离开、忙碌、勿