HID开发，'DEV_BROADCAST_DEVICEINTERFACE' : undeclared identifier

在人体输入学设备开发中，有时遇到

'DEV_BROADCAST_DEVICEINTERFACE' : undeclared identifier

的错误，

需要在stdafx.h中，添加

#define WINVER 0x0501

例如：

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define VC_EXTRALEAN		// Exclude rarely-used stuff from Windows headers

#define WINVER 0x0501
#include          // MFC core and standard components
#include          // MFC extensions
#include         // MFC Automation classes
#include 		// MFC support for Internet Explorer 4 Common Controls
#ifndef _AFX_NO_AFXCMN_SUPPORT
#include 			// MFC support for Windows Common Controls
#endif // _AFX_NO_AFXCMN_SUPPORT