Detect Locking and Unlocking of a PC

[WiSp]

I trying to find an example of a script that detects when a PC is unlocked and then maximize itself. Is there a way for autoit to detect a locked and unlocked PC and launch events based on this?

[Monamo]

I trying to find an example of a script that detects when a PC is unlocked and then maximize itself. Is there a way for autoit to detect a locked and unlocked PC and launch events based on this?

Here's the function that I use (typically in a While... Wend loop, which should suit your requested usage well):

Global Const $DESKTOP_SWITCHDESKTOP = 0x100

Func _CheckLocked()
    $hLockedDLL = DllOpen("user32.dll")
    $hDesktop = DllCall($hLockedDLL, "int", "OpenDesktop", "str", "Default", "int", 0, "int", 0, "int", $DESKTOP_SWITCHDESKTOP)
    $ret = DllCall($hLockedDLL, "int", "SwitchDesktop", "int", $hDesktop[0])
    DllCall($hLockedDLL, "int", "CloseDesktop", "int", $hDesktop[0])

    If $ret[0] = 0 Then
        $iLocked = 1
    ElseIf $ret[0] = 1 Then
        $iLocked = 0
    EndIf
    
    DllClose($hLockedDLL)
    
    If $iLocked Then
        Return 1
    Else
        Return 0
    EndIf
EndFunc

Edit: Added the Global Constant needed by the function

Edited August 26, 2008 by Monamo

[WiSp]

Could I place the function call in the GUI's while loop or is that inadvisable?

[Monamo]

Could I place the function call in the GUI's while loop or is that inadvisable?

Should be fine (just remember that the Constant declaration should be before the loop, not in it). I typically use it when I require interaction from a user for a specific piece of code before continuing, as there's no point in displaying the message while the system is locked.

[WiSp]

Thank you, I'll give it a shot.

[YoniB]

Here's the function that I use (typically in a While... Wend loop, which should suit your requested usage well):

Global Const $DESKTOP_SWITCHDESKTOP = 0x100

Func _CheckLocked()
    $hLockedDLL = DllOpen("user32.dll")
    $hDesktop = DllCall($hLockedDLL, "int", "OpenDesktop", "str", "Default", "int", 0, "int", 0, "int", $DESKTOP_SWITCHDESKTOP)
    $ret = DllCall($hLockedDLL, "int", "SwitchDesktop", "int", $hDesktop[0])
    DllCall($hLockedDLL, "int", "CloseDesktop", "int", $hDesktop[0])

    If $ret[0] = 0 Then
        $iLocked = 1
    ElseIf $ret[0] = 1 Then
        $iLocked = 0
    EndIf
    
    DllClose($hLockedDLL)
    
    If $iLocked Then
        Return 1
    Else
        Return 0
    EndIf
EndFunc

Edit: Added the Global Constant needed by the function

Hi Monamo!

I tried your code and it's working great for local unlocked desktop.

But when someone connect remotely (by Remote Desktop), the status is 'Unlocked' even if he closed the session (without manually unlocking). This status supposed to be 'Locked' (no one connected!).

Do you know why it behaving like that?

Do you have any solution idea?

Thanks a lot!