如何獲得 Windows 作業系統的版本

很多時候我們需要知道Windows作業系統的版本，使用下面這個API函數可以做到。
Option Explicit
Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" (lpVersionInformation As OSVERSIONINFO) As Long
Private Type OSVERSIONINFO
dwOSVersionInfoSize As Long
dwMajorVersion As Long
dwMinorVersion As Long
dwBuildNumber As Long
dwPlatformId As Long
szCSDVersion As String * 128 ' Maintenance string for PSS usage
osName As String ' 我自己加的, 作業系統的名稱
End Type
' 獲得 Windows 作業系統的版本
' OSVERSIONINFO 結構中的 osName 返回作業系統的名稱
Private Function GetWindowsVersion() As OSVERSIONINFO
Dim ver As OSVERSIONINFO
ver.dwOSVersionInfoSize = 148
GetVersionEx ver
With ver
Select Case .dwPlatformId
Case 1
Select Case .dwMinorVersion
Case 0
.osName = "Windows 95"
Case 10
.osName = "Windows 98"
Case 90
.osName = "Windows Mellinnium"
End Select
Case 2
Select Case .dwMajorVersion
Case 3
.osName = "Windows NT 3.51"
Case 4
.osName = "Windows NT 4.0"
Case 5