怎样利用判断操作系统的版本？

[特招]

怎样利用C++Builder编判断操作系统版本的程序？
例如：win98,win2000,win2000server

[特招]

Thanks

[ccrun.com]

给你个长的。

//---------------------------------------------------------------------------
#include "stdio.h"
bool GetOSVersion(String &strVersion,String &strPlatform,
String &strBuildNumber,String &strCSDVersion)
{
OSVERSIONINFO info;
bool bIsNT;
ZeroMemory(&info, sizeof(OSVERSIONINFO));
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx(&info))
return false;
strVersion=String((int)info.dwMajorVersion) + "." + String((int)info.dwMinorVersion);
strBuildNumber=String((int)info.dwBuildNumber);
strCSDVersion=String(info.szCSDVersion);

if(GetVersionEx(&info))
{
strPlatform = "Windows";
bIsNT = (info.dwPlatformId == VER_PLATFORM_WIN32_NT);
if(bIsNT)
{
if((info.dwMajorVersion==5) && (info.dwMinorVersion==0)) //5.00.2195
strPlatform += " 2000";
else if((info.dwMajorVersion==5) && (info.dwMinorVersion==1)) //5.01.xxxx
strPlatform += " XP";
else if((info.dwMajorVersion==5) && (info.dwMinorVersion==2)) //5.02.xxxx
strPlatform += " 2003";
else //Other Windows NT Kernel OS
strPlatform += " NT";
}
else //None WinNT
{
if(info.dwMajorVersion==4) //Win9x/WinME
{
if(info.dwMinorVersion==0) //Win95 = 4.00.950
{
strPlatform += " 95";
if(LOWORD(info.dwBuildNumber)>=1111) //Win95 OSR2 = 4.00.1111
strPlatform += " OSR2";
}
else if(info.dwMinorVersion==10) //Win98 = 4.10.1998
{
strPlatform += " 98";
if(LOWORD(info.dwBuildNumber)>=2222) //Win98 SE = 4.10.2222
strPlatform += " SE";
}
else if(info.dwMinorVersion==90) //WinME = 4.90.3333
{
strPlatform += " ME";
}
}
}
}
return true;
}
//---------------------------------------------------------------------------
// 调用举例：
void __fastcall TForm1::Button1Click(TObject *Sender)
{
String strVersion, strPlatform, strBuildNumber, strCSDVersion;
GetOSVersion(strVersion, strPlatform, strBuildNumber, strCSDVersion);
ShowMessage("当前系统为：" + strPlatform + " Ver: " + strVersion + " Build:" + strBuildNumber);
}
//---------------------------------------------------------------------------