fatal error C1189: #error : This file requires _WIN32_WINNT to be#defined at least to 0x0500. Value 0x0501 or higher is recommended.
VS2003的工程转换成VS2010后编译报错。
定位到afxcomctl32.h文件，这是系统文件没有做任何更改，主要还是版本兼容性问题。
修改方法：
新建一个targetver.h头文件，复制以下代码：
#pragma once
// Including SDKDDKVer.h defines the highest available Windows platform.
// If you wish to build your application for a previous Windows platform, include WinSDKVer.h and
// set the _WIN32_WINNT macro to the platform you wish to support before including SDKDDKVer.h.
#include <SDKDDKVer.h>
然后在工程的stdafx.h的顶部添加 include"targetver.h"。
重新编译即可。
fatal error C1189: #error : This file requires _WIN32_WINNT to be #defined at least to 0x0500. Val
原文：http://blog.csdn.net/xiao_lxl/article/details/45533361