'Original Author: Waty Thierry
'Purpose: Activate/Deactivate the Screen Saver
'Version: VB4+

Option Explicit

Private Const SPI_SETSCREENSAVEACTIVE = 17
Private Const SPIF_UPDATEINIFILE = &H1
Private Const SPIF_SENDWININICHANGE = &H2

Private Declare Function SystemParametersInfo Lib "user32" _
Alias "SystemParametersInfoA" (ByVal uAction As Long, ByVal _
uParam As Long, ByVal lpvParam As Long, ByVal fuWinIni As _
Long) As Long

Public Function ToggleScreenSaverActive(Active As Boolean) As Boolean
    'To Activate Screen Saver, set active to true
    'to deactivate, set active to false
    Dim lActiveFlag As Long
    Dim retval As Long
    lActiveFlag = IIf(Active, 1, 0)
    retval = SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, _
       lActiveFlag, 0, 0)
    ToggleScreenSaverActive = retval > 0
End Function

Private Sub Form_Load()
 ToggleScreenSaverActive False
End Sub

Private Sub Form_Unload(Cancel As Integer)
 ToggleScreenSaverActive True
End Sub