方法1.

environment env
integer resp
string temp,ls_version
resp = getenvironment(env)

choose case env.ostype
case aix!
temp = 'AIX'
case hpux!
temp = 'HPUX'
case macintosh!
temp = 'MacIntosh'
case osf1!
temp = 'OSF1'
case sol2!
temp = 'Solaris 2'
case Windows!
temp = 'Windows'
case Windowsnt!
temp = 'Windows NT'
end choose
ls_version = temp + ' '+string(env.osmajorrevision)+'.'+string(env.osminorrevision)+'.'+string(env.osfixesrevision)

messagebox("Windows version",ls_version)

　　每种操作系统都有其版本号,自己在不同的操作系统上运行一下就知道了.然后再转换成自己熟悉的windows名称就可以了

方法2.

Long L1
dec{2} ldc_WinVer
string ls_WinVer
L1 = GetVersion()
ldc_WinVer = MOD(intlow(L1),256) + int(intlow(L1)/256)/100
choose case ldc_WinVer
case 3.10
ls_WinVer = "Windows 3.x"
case 4
ls_WinVer = "Windows NT 4.0"
case 4.10
ls_WinVer = "Windows 98"
case 5
ls_WinVer = "Windows 2000"
case 5.01
ls_WinVer = "Windows XP"
case 5.02
ls_WinVer = "Windows 2003"
end choose
messagebox("Windows version",ls_WinVer)

---------------------------------------------------------------

下面给出一个函数

// Function: gf_getos()

// Description: Get current Os name

// Arguments: value integer

// Returns: string
// 95-98 : Windows
// 2000- : WindowsNT
// Else : ""

// Author:Kilojin Date: 2005.02.14

// Modify History:
//

environment env
integer rtn
rtn = GetEnvironment(env)
IF rtn <> 1 THEN RETURN ""
CHOOSE CASE env.OSType
CASE Windows!
// Windows 95 or 98 code
return "Windows"
CASE WindowsNT!
// Windows NT-specific code
return "WindowsNT"
CASE Sol2!
IF env.OSMinorRevision = 5 THEN
RETURN ""
ELSEIF env.OSMinorRevision = 6 THEN
// Solaris 2.6 code
RETURN ""
END IF
CASE ELSE
RETURN ""
END CHOOSE