Private Declare Auto Function ExitWindowsEx Lib "user32" (ByVal uFlags As _
      Integer, ByVal dwReserved As Integer) As Integer
    Private Const EWX_REBOOT As Integer = 2
    Private Const EWX_FORCE As Integer = 4
    Private Const EWX_LOGOFF As Integer = 0
    Private Const EWX_SHUTDOWN As Integer = 1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles Button1.Click
        Dim Result As Integer = ExitWindowsEx(EWX_LOGOFF, 0)
    End Sub