This file requires _WIN32_WINNT to be #defined at least to 0x0403. Value 0x0501 or higher is recommended

VS2005转换成VS2010时出现的问题：

This file requires _WIN32_WINNT to be #defined at least to 0x0403. Value 0x0501 or higher is recommended

解决方法：打开stdafx.h文件修改如下：

注释掉：

//#ifndef WINVER // Allow use of features specific to Windows 95 and Windows NT 4 or later.
//#define WINVER 0x0400 // Change this to the appropriate value to target Windows 98 and Windows 2000 or later.
//#endif
//
//#ifndef _WIN32_WINNT // Allow use of features specific to Windows NT 4 or later.
//#define _WIN32_WINNT 0x0400 // Change this to the appropriate value to target Windows 98 and Windows 2000 or later.
//#endif
//
//#ifndef _WIN32_WINDOWS // Allow use of features specific to Windows 98 or later.
//#define _WIN32_WINDOWS 0x0410 // Change this to the appropriate value to target Windows Me or later.
//#endif
//
//#ifndef _WIN32_IE // Allow use of features specific to IE 4.0 or later.
//#define _WIN32_IE 0x0400 // Change this to the appropriate value to target IE 5.0 or later.
//#endif

新增加：

#ifndef WINVER // Allow use of features specific to Windows 95 and Windows NT 4 or later. 
#define WINVER 0x0501 // Change this to the appropriate value to target Windows 98 and Windows 2000 or later. 
#endif

#ifndef _WIN32_WINNT // Allow use of features specific to Windows NT 4 or later. 
#define _WIN32_WINNT 0x0501 // Change this to the appropriate value to target Windows 98 and Windows 2000 or later. 
#endif

#ifndef _WIN32_WINDOWS // Allow use of features specific to Windows 98 or later. 
#define _WIN32_WINDOWS 0x0501 // Change this to the appropriate value to target Windows Me or later. 
#endif

#ifndef _WIN32_IE // Allow use of features specific to IE 4.0 or later. 
#define _WIN32_IE 0x0601 // Change this to the appropriate value to target IE 5.0 or later. 
#endif