这是微软的一个查看USB设备枚举后状态的例程，虽然它只支持到USB1.1，但是对于想做USB sniffer的开发者来说很应该读一读。-This is a USB device enumeration View condition after the routines, although only to the USB 1.1 support, but wants to develop the USB sniffers are concerned, it should read.

USB查看工具 USBDeview v1.25 Copyright (c) 2006 - 2008 Nir Sofer Web Site: http://www.nirsoft.net,USB View tool USBDeview v1.25 Copyright (c) 2006- 2008 Nir Sofer Web Site: http://www.nirsoft.net

usb开发工具，非常适用，改语言为C++(USB development tools)