用VB取得操作系统安装的时间
Option Explicit
Private Declare Function RegCreateKey Lib "advapi32.dll" Alias "RegCreateKeyA" ( _
ByVal hKey As Long, ByVal lpSubKey As String, _
phkResult As Long) As Long
'在指定的项下创建一个新项。如指定的项已经存在，那么函数会打开现有的项
Private Declare Function RegQueryValueEx Lib "advapi32.dll" Alias "RegQueryValueExA" ( _
ByVal hKey As Long, ByVal lpValueName As String, _
ByVal lpReserved As Long, lpType As Long, lpData As Any, _
lpcbData As Long) As Long '获取一个项的设置值
Private Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long '关闭系统注册表中的一个项
Private Const HKEY_LOCAL_MACHINE = &H80000002
Private Const REG_DWORD = 4
'**************************************************************************************************************
' 函数名称:
' ---------- GetWindowsInstallDateTime
' 功能描述:
' ---------- 获得操作系统安装的日期时间
' 传入参数:
' ---------- 无
' 返回值:
' ---------- 无
' 修改历史记录:
'**************************************************************************************************************
Function GetWindowsInstallDateTime() As String
On Error Resume Next
Dim InstallDateValue As Long
Dim hKey As Long
If RegCreateKey(HKEY_LOCAL_MACHINE, "SOFTWARE/Microsoft/Windows NT/CurrentVersion", hKey) = 0 Then '打开该项的
If RegQueryValueEx(hKey, "InstallDate", 0&, REG_DWORD, InstallDateValue, 4) = 0 Then '获取值成功
If InstallDateValue > 0 Then
GetWindowsInstallDateTime = DateAdd("s", InstallDateValue, "1970-01-01 00:00")
Else
GetWindowsInstallDateTime = "时间未知"
End If
End If
If hKey Then RegCloseKey hKey '关闭打开的项
End If
End Function
Private Sub Command1_Click()
MsgBox "当前系统的安装时间为：" & GetWindowsInstallDateTime, vbInformation, ""
End Sub