windows7发布有一段时间了，基于windows7的触摸设备也慢慢在市面出现，文章是微软发布的多点触摸设备描述白皮书，希望能给这方面工作的朋友一些作用。-windows7 release for some time, based on windows7 touch devices are slowly appear on the market, the article is Microsoft released white paper describes multi-touch device