Sets a shutdown order for a process relative to the other processes in the system
#include <WinAPISys.au3>
_WinAPI_SetProcessShutdownParameters ( $iLevel [, $bDialog = False] )
| $iLevel | The shutdown priority. The system shuts down processes from high $iLevel values to low. The highest and lowest shutdown priorities are reserved for system components. This parameter must be in the following range of values. 0x0000-0x00FF - System reserved last shutdown range. 0x0100-0x01FF - Application reserved last shutdown range. 0x0200-0x02FF - Application reserved "in between" shutdown range. 0x0300-0x03FF - Application reserved first shutdown range. 0x0400-0x04FF - System reserved first shutdown range. All processes start at shutdown level 0x0280. |
| $bDialog | [optional] Specifies whether display a retry dialog box for the user, valid values: True - Display a retry dialog box if process takes longer than the specified timeout to shutdown. False - Directly terminates the process (Default). |
| Success: | True |
| Failure: | False |
Search SetProcessShutdownParameters in MSDN Library.
#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <MsgBoxConstants.au3>
#include <WinAPISys.au3>
#include <WindowsConstants.au3>
If Number(_WinAPI_GetVersion()) < 6.0 Then
MsgBox(($MB_ICONERROR + $MB_SYSTEMMODAL), 'Error', 'Require Windows Vista or later.')
Exit
EndIf
Global $g_hForm = GUICreate('Test ' & StringReplace(@ScriptName, '.au3', '()'), 200, 200)
Local $idButton = GUICtrlCreateButton('', 73, 62, 54, 54, $BS_ICON)
GUICtrlSetImage(-1, @SystemDir & '\shell32.dll', 45)
GUICtrlSetTip(-1, 'Log off ' & @UserName)
Local $idCheck = GUICtrlCreateCheckbox('Block Windows shutdown', 10, 173, 144, 21)
GUIRegisterMsg($WM_QUERYENDSESSION, 'WM_QUERYENDSESSION')
GUISetState(@SW_SHOW)
; Set the highest shutdown priority for the current process to prevent closure the other processes.
_WinAPI_SetProcessShutdownParameters(0x03FF)
While 1
Switch GUIGetMsg()
Case $GUI_EVENT_CLOSE
ExitLoop
Case $idButton
Shutdown(0)
Case $idCheck
If GUICtrlRead($idCheck) = $GUI_CHECKED Then
_WinAPI_ShutdownBlockReasonCreate($g_hForm, 'This application is blocking system shutdown because the saving critical data is in progress.')
Else
_WinAPI_ShutdownBlockReasonDestroy($g_hForm)
EndIf
EndSwitch
WEnd
Func WM_QUERYENDSESSION($hWnd, $iMsg, $wParam, $lParam)
#forceref $iMsg, $wParam, $lParam
Switch $hWnd
Case $g_hForm
If _WinAPI_ShutdownBlockReasonQuery($g_hForm) Then
Return 0
EndIf
EndSwitch
Return $GUI_RUNDEFMSG
EndFunc ;==>WM_QUERYENDSESSION