IntelliSense: #error 指令: Please use the /MD switch for _AFXDLL builds

由#error引起

解决方法：

修改如下设置：工程(Project)->属性(Properties)->配置属性(Configuration Properties)->c/c++->代码生成(Code Generation)->运行时库(Use run-time library)->多线程调试DLL(/MDd)选择DLL(/MD);