36.txt

VB文章集（含API、窗口、数据库、多媒体、系统、文件、等等）

获取当前系统平台 
     有些程序只能在Win9x下运行,有些程序只能在Winnt下运行,因此我们有时需要判断当前的系统的平台. 下面的程序可以实现该功能:
>>步骤1----建立新工程,在窗体上放置一个CommandButton按钮.
>>步骤2----添加下列代码:

Private Type OSVERSIONINFO
    dwOSVersionInfoSize As Long
    dwMajorVersion As Long
    dwMinorVersion As Long
    dwBuildNumber As Long
    dwPlatformId As Long
    szCSDVersion As String * 128
End Type

Private Declare Function GetVersionEx Lib "kernel32" Alias _
    "GetVersionExA" (lpVersionInformation As _
    OSVERSIONINFO) As Boolean

Private Const VER_PLATFORM_WIN32s = 0
Private Const VER_PLATFORM_WIN32_WINDOWS = 1
Private Const VER_PLATFORM_WIN32_NT = 2

Private Sub Command1_Click()
    Dim Ver As OSVERSIONINFO
    Ver.dwOSVersionInfoSize = Len(Ver)
    Call GetVersionEx(Ver)
    If Ver.dwPlatformId = 0 Then
        MsgBox "Win32"
    ElseIf Ver.dwPlatformId = 1 Then
        MsgBox "Win95,Win98"
    ElseIf Ver.dwPlatformId = 2 Then
        MsgBox "Winnt"
    Else
        MsgBox "Error"
    End If
End Sub

>>步骤3----编译运行,按下Command1,可以查看平台信息.