Turn off the monitor when power button pressed

[Alexxander]

hi all

i hade made my Laptop do nothing when i press the power button

i want to make a script that turn off the monitor when i press the power button (i can't find that option in my windows)

i tried using _is pressed an Hotkeyset but i can't find the ascii code of the power button

any ideas ?

[BrewManNH]

There isn't a keycode for the power button. Windows responds to the hardware when you press it.

[Alexxander]

BrewManNH

 

is there is anyway even if it wasn't autoit to turn off monitor when power button is pressed ?

[BrewManNH]

You might find something that utilizes WinAPI's PowerCreateSetting function to do that, or something similar.

[Valuater]

You can set the power button to hibernate... That should work on the screen too.

http://www.pcworld.com/article/160826/Change_the_Function_of_Your_Laptops_Power_Button.html

8)

[DW1]

If you set the power button option to standby/sleep, you should be able to intercept that command, run your own, then deny the power event.

Global Const $WM_POWERBROADCAST = 0x0218
Global Const $PBT_APMRESUMESTANDBY = 0x0008
Global Const $BROADCAST_QUERY_DENY = 0x424D5144

$hGUI = GUICreate("Standby test", 100, 100, 1, 1)
GUIRegisterMsg($WM_POWERBROADCAST, "Standby")

While 1
    Sleep(10)
WEnd

Func Standby($hWnd, $Msg, $wParam, $lParam)
    If $wParam = $PBT_APMRESUMESTANDBY Then
        DoSomething()
        ;Cancel standby
        Return $BROADCAST_QUERY_DENY
    EndIf
EndFunc   ;==>Standby

Func DoSomething()
    ;Turn off screen or whatever (non-blocking)
EndFunc   ;==>DoSomething

Untested and compiled from the following threads:

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[Alexxander]

danwilli

 

 

thank for replay bro

 

for now i'm using your script but it can't interrupt the sleep then msgbox 

i'm i missing something ?

Global Const $WM_POWERBROADCAST = 0x0218
Global Const $PBT_APMRESUMESTANDBY = 0x0008
Global Const $BROADCAST_QUERY_DENY = 0x424D5144

$hGUI = GUICreate("Standby test", 100, 100, 1, 1)
GUIRegisterMsg($WM_POWERBROADCAST, "Standby")

While 1
    Sleep(10)
WEnd

Func Standby($hWnd, $Msg, $wParam, $lParam)
    If $wParam = $PBT_APMRESUMESTANDBY Then
        DoSomething()
        ;Cancel standby
        Return $BROADCAST_QUERY_DENY
    EndIf
EndFunc   ;==>Standby

Func DoSomething()
MsgBox(0, "", "func")
EndFunc   ;==>DoSomething

 

[DW1]

 

danwilli

 

 

thank for replay bro

 

for now i'm using your script but it can't interrupt the sleep then msgbox 

i'm i missing something ?

Global Const $WM_POWERBROADCAST = 0x0218
Global Const $PBT_APMRESUMESTANDBY = 0x0008
Global Const $BROADCAST_QUERY_DENY = 0x424D5144

$hGUI = GUICreate("Standby test", 100, 100, 1, 1)
GUIRegisterMsg($WM_POWERBROADCAST, "Standby")

While 1
    Sleep(10)
WEnd

Func Standby($hWnd, $Msg, $wParam, $lParam)
    If $wParam = $PBT_APMRESUMESTANDBY Then
        DoSomething()
        ;Cancel standby
        Return $BROADCAST_QUERY_DENY
    EndIf
EndFunc   ;==>Standby

Func DoSomething()
MsgBox(0, "", "func")
EndFunc   ;==>DoSomething

 

Looks like I was using the wrong event there.  Sleep on power button triggers 0x0004 which is PBT_APMSUSPEND

This works to rigger the DoSomething() function, but it seems that the $BROADCAST_QUERY_DENY is not actually stopping the suspend. I'm going to play around with it a bit more when time allows.  Sorry it took me so long to test, but I'm at work.

Global Const $WM_POWERBROADCAST     =     0x0218
Global Const $PBT_APMRESUMESTANDBY     =     0x0008
Global Const $PBT_APMSUSPEND         =     0x0004
Global Const $BROADCAST_QUERY_DENY     =     0x424D5144

$hGUI = GUICreate("Standby test", 100, 100, 1, 1)
GUIRegisterMsg($WM_POWERBROADCAST, "Standby")

While 1
    Sleep(10)
WEnd

Func Standby($hWnd, $Msg, $wParam, $lParam)
    ConsoleWrite("test1 - " & $wParam & @CRLF)
    If $wParam = $PBT_APMSUSPEND Then
        DoSomething()
        ;Cancel standby
        Return $BROADCAST_QUERY_DENY
    EndIf
    Return $BROADCAST_QUERY_DENY
EndFunc   ;==>Standby

Func DoSomething()
    ;Turn off screen or whatever (non-blocking)
    ConsoleWrite("test2" & @CRLF)
EndFunc   ;==>DoSomething

The above works to trigger the function when the power button is set to sleep and pressed, however it fails to actually stop the sleep as it stands now.  I'll look more in to this when I can.

Looks like we are not alone in seeing this behavior in Windows 7: http://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/e711f471-0ae8-4fde-b333-5e369a5283c3/broadcastquerydeny-does-not-prevent-sleep-in-windows-7

 

EDIT: Looks like this is not possible for a sleep event anymore as of Windows 7: http://stackoverflow.com/questions/14433874/how-to-detect-power-button-event-and-deny-it-on-windows-7-from-laptop

You could change this to a shutdown event for Windows 7 and be successful, but this would also effect when you use the start menu to actually try and shut down.  You could always close the program if you really wanted to shut down or code a hotkey that doesn't pass BROADCAST_QUERY_DENY if the hotkey is being held, etc.  That's the only way you are going to be able to hook the power button in Windows 7 and still deny the action, as far as I know.

Edited September 6, 2013 by danwilli

[Alexxander]

Looks like I was using the wrong event there.  Sleep on power button triggers 0x0004 which is PBT_APMSUSPEND

This works to rigger the DoSomething() function, but it seems that the $BROADCAST_QUERY_DENY is not actually stopping the suspend. I'm going to play around with it a bit more when time allows.  Sorry it took me so long to test, but I'm at work.

Global Const $WM_POWERBROADCAST     =     0x0218
Global Const $PBT_APMRESUMESTANDBY     =     0x0008
Global Const $PBT_APMSUSPEND         =     0x0004
Global Const $BROADCAST_QUERY_DENY     =     0x424D5144

$hGUI = GUICreate("Standby test", 100, 100, 1, 1)
GUIRegisterMsg($WM_POWERBROADCAST, "Standby")

While 1
    Sleep(10)
WEnd

Func Standby($hWnd, $Msg, $wParam, $lParam)
    ConsoleWrite("test1 - " & $wParam & @CRLF)
    If $wParam = $PBT_APMSUSPEND Then
        DoSomething()
        ;Cancel standby
        Return $BROADCAST_QUERY_DENY
    EndIf
    Return $BROADCAST_QUERY_DENY
EndFunc   ;==>Standby

Func DoSomething()
    ;Turn off screen or whatever (non-blocking)
    ConsoleWrite("test2" & @CRLF)
EndFunc   ;==>DoSomething

The above works to trigger the function when the power button is set to sleep and pressed, however it fails to actually stop the sleep as it stands now.  I'll look more in to this when I can.

Looks like we are not alone in seeing this behavior in Windows 7: http://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/e711f471-0ae8-4fde-b333-5e369a5283c3/broadcastquerydeny-does-not-prevent-sleep-in-windows-7

 

EDIT: Looks like this is not possible for a sleep event anymore as of Windows 7: http://stackoverflow.com/questions/14433874/how-to-detect-power-button-event-and-deny-it-on-windows-7-from-laptop

You could change this to a shutdown event for Windows 7 and be successful, but this would also effect when you use the start menu to actually try and shut down.  You could always close the program if you really wanted to shut down or code a hotkey that doesn't pass BROADCAST_QUERY_DENY if the hotkey is being held, etc.  That's the only way you are going to be able to hook the power button in Windows 7 and still deny the action, as far as I know.

 

so there is no way to do that even if it was not autoit ?

[DW1]

so there is no way to do that even if it was not autoit ?

To be specific, in Windows 7, there is no way to interrupt PBT_APMSUSPEND with BROADCAST_QUERY_DENY like in previous versions of Windows.

I see lots of forums in all different programming languages discussing the same.

As for another way to accomplish the same thing, there probably is, but I don't know what it is.

Maybe if you changed the power button to shut down and attempt to interrupt that with BROADCAST_QUERY_DENY, but then you wouldn't be able to shut down the computer from the start menu either unless you looked for something like a hotkey and didn't pass the BROADCAST_QUERY_DENY if it was held down, or made your own shutdown option in your script, or shut down the app first, or any other not very clean/professional way.

Maybe somebody that knows a lot more than I do will join the thread and show us the light.  If the shutdown option seems fine to you, you can give that a shot though.

EDIT: I tested stopping the shutdown, and it works, but it really only holds the shutdown from occurring on Windows 7, and will still show the shutdown screen until you hit cancel.  So for Windows 7, I have no idea how to hook the power button as this method will not work for it.

Edited September 8, 2013 by danwilli

[BrewManNH]

Use a hotkey to trigger a function that does the job. It's far less troublesome that way.