mediaclient.lib(usb_interface_win32.obj) : error LNK2001: unresolved external symbol __imp__SetupDiGetDeviceInterfaceDetailA@24
mediaclient.lib(usb_interface_win32.obj) : error LNK2001: unresolved external symbol __imp__SetupDiDestroyDeviceInfoList@4
mediaclient.lib(usb_interface_win32.obj) : error LNK2001: unresolved external symbol __imp__SetupDiEnumDeviceInterfaces@20
mediaclient.lib(usb_interface_win32.obj) : error LNK2001: unresolved external symbol __imp__SetupDiGetClassDevsA@16
解決方法：
在StdAfx.h中添加如下lib
#pragma comment(lib,"setupapi.lib")//