参阅陈宽达写的《Delphi深度历险》,虽然是Delphi的,但是原理一样
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Private Const SPIF_UPDATEINIFILE = &H1
Private Const SPIF_SENDWININICHANGE = &H2Private Declare Function SystemParametersInfo Lib "user32" _
Alias "SystemParametersInfoA" (ByVal uAction As Long, ByVal _
uParam As Long, ByVal lpvParam As Long, ByVal fuWinIni As _
Long) As LongCode:Public Function ToggleScreenSaverActive(Active As Boolean) _
As Boolean'To Activate Screen Saver, set active to true
'to deactivate, set active to falseDim lActiveFlag As Long
Dim retval As LonglActiveFlag = IIf(Active, 1, 0)
retval = SystemParametersInfo(SPI_SETSCREENSAVEACTIVE, _
lActiveFlag, 0, 0)
ToggleScreenSaverActive = retval > 0End Function