System.WindowsVersion$ (property)

Syntax System.WindowsVersion$
Description Returns the version of the operating environment, such as "5."
Comments
Example This example sets the UseWin31 variable to True if the Windows version is greater than or equal to 3.1; otherwise, it sets the UseWin31 variable to False. 
Sub Main()
    If Val(System.WindowsVersion$) >= 5 Then
    MsgBox "You are running a Windows version 5 or later"
    Else
    MsgBox "You are running Windows version earlier than 5"
    End If
End Sub
See Also Basic.Version$ (property).