DWORD GetInterfaceDescriptor(UINT ConfigIdx, UINT InterfIdx, UINT AltIdx, PUSB_INTERFACE_DESCRIPTOR Desc);
typedef struct _USB_INTERFACE_DESCRIPTOR {
UCHAR bLength;
UCHAR bDescriptorType;
UCHAR bInterfaceNumber;
UCHAR bAlternateSetting;
UCHAR bNumEndpoints;
UCHAR bInterfaceClass;
UCHAR bInterfaceSubClass;
UCHAR bInterfaceProtocol;
UCHAR iInterface;
} USB_INTERFACE_DESCRIPTOR, *PUSB_INTERFACE_DESCRIPTOR;
已经在STDAFX.H中定义，IDE也能链接到这个定义，但是编译的时候就是找不到，不知道什么原因
