This code is attached to a form with its Timer Interval set to 1000 and this event called in the OnTimer event. It definitely will not close the session. The code will display a message to the user, you can change that to close the database or whatever you want to happen.
Code:
Sub Form_Timer()
' https://support.microsoft.com/en-us/kb/128814
' IDLEMINUTES determines how much idle time to wait for before
' running the IdleTimeDetected subroutine.
Const IDLEMINUTES = 60
Static PrevControlName As String
Static PrevFormName As String
Static ExpiredTime
Dim ActiveFormName As String
Dim ActiveControlName As String
Dim ExpiredMinutes
On Error Resume Next
' Get the active form and control name.
ActiveFormName = Screen.ActiveForm.Name
If Err Then
ActiveFormName = "No Active Form"
Err = 0
End If
ActiveControlName = Screen.ActiveControl.Name
If Err Then
ActiveControlName = "No Active Control"
Err = 0
End If
' Record the current active names and reset ExpiredTime if:
' 1. They have not been recorded yet (code is running
' for the first time).
' 2. The previous names are different than the current ones
' (the user has done something different during the timer
' interval).
If (PrevControlName = "") Or (PrevFormName = "") Or (ActiveFormName <> PrevFormName) Or (ActiveControlName <> PrevControlName) Then
PrevControlName = ActiveControlName
PrevFormName = ActiveFormName
ExpiredTime = 0
Else
' ...otherwise the user was idle during the time interval, so
' increment the total expired time.
ExpiredTime = ExpiredTime + Me.TimerInterval
End If
'Debug.Print IDLEMINUTES
'Debug.Print ExpiredTime
' Does the total expired time exceed the IDLEMINUTES?
ExpiredMinutes = (ExpiredTime / 1000) / 60
'Debug.Print ExpiredMinutes
If ExpiredMinutes >= IDLEMINUTES Then
' ...if so, then reset the expired time to zero...
ExpiredTime = 0
' ...and call the IdleTimeDetected subroutine.
IdleTimeDetected ExpiredMinutes
End If
End Sub
Sub IdleTimeDetected(ExpiredMinutes)
Dim Msg As String
Msg = "No user activity detected in the last "
Msg = Msg & ExpiredMinutes & " minute(s)!"
MsgBox Msg, 48
End Sub