在开发过程中中，把开发过程中比较好的内容片段备份一次，下边内容段是关于C++获得当前windows系统的版本号的内容，应该能对码农们也有好处。

#include "InitWindowsVersion.h"      无 WIN_VER_DETAIL GetWindowsVersion(){    UNICODE_STRING ustrFuncName = { 0 };     RTL_OSVERSIONINFOEXW osverinfo = { sizeof(osverinfo) };     PFN_RtlGetVersion pfnRtlGetVersion = NULL;    if (WinVersion)        return WinVersion;    RtlInitUnicodeString(&ustrFuncName, L"RtlGetVersion");     if (pfnRtlGetVersion)    {         pfnRtlGetVersion((PRTL_OSVERSIONINFOW)&osverinfo);     }     else     {        PsGetVersion(&osverinfo.dwMajorVersion, &osverinfo.dwMinorVersion, &osverinfo.dwBuildNumber, NULL);    }    if (osverinfo.dwMajorVersion == 5 && osverinfo.dwMinorVersion == 0)     {        WinVersion = WINDOWS_VERSION_2K;    }     else if (osverinfo.dwMajorVersion == 5 && osverinfo.dwMinorVersion == 1)     {        WinVersion = WINDOWS_VERSION_XP;    }     else if (osverinfo.dwMajorVersion == 5 && osverinfo.dwMinorVersion == 2)     {        if (osverinfo.wServicePackMajor==0)         {             WinVersion = WINDOWS_VERSION_2K3;        }         else         {            WinVersion = WINDOWS_VERSION_2K3_SP1_SP2;        }    }     else if (osverinfo.dwMajorVersion == 6 && osverinfo.dwMinorVersion == 0)     {        WinVersion = WINDOWS_VERSION_2K3_SP1_SP2;    }    else if (osverinfo.dwMajorVersion == 6 && osverinfo.dwMinorVersion == 1)    {        WinVersion = WINDOWS_VERSION_7;    }    return WinVersion;}InitWindowsVersion.h#ifndef _SYSTEM_H#define _SYSTEM_H#include "ntifs.h"typedef enum WIN_VER_DETAIL {    WINDOWS_VERSION_2K,    WINDOWS_VERSION_XP,    WINDOWS_VERSION_2K3,    WINDOWS_VERSION_2K3_SP1_SP2,    WINDOWS_VERSION_VISTA_2008,    WINDOWS_VERSION_7} WIN_VER_DETAIL;WIN_VER_DETAIL WinVersion; WIN_VER_DETAIL GetWindowsVersion();#endif