#Include <WinAPIEx.au3>
Sleep(5000) ;给你5秒钟时间锁定电脑
Const $DESKTOP_SWITCHDESKTOP = 0x0100
$hDesktop = _WinAPI_OpenDesktop ("Default",$DESKTOP_SWITCHDESKTOP)
If Not @error Then
_WinAPI_SwitchDesktop ($hDesktop)
If @error Then
MsgBox(0,0,"电脑已锁定")
EndIf
_WinAPI_CloseDesktop($hDesktop)
EndIf