Is it possible to display a message on the login screen?

[timmy2]

I found this post that includes a demo of how the $MB_SERVICE_NOTIFICATION works.

; http://msdn.microsoft.com/en-us/library/windows/desktop/ms645505(v=vs.85).aspx
; Community Additions: MB_SERVICE_NOTIFICATION is ignored on Vista
$MB_SERVICE_NOTIFICATION = 2097152; 0x00200000
DllCall('user32.dll', 'int', 'LockWorkStation')
Sleep(3000)
MsgBox($MB_SERVICE_NOTIFICATION, "$MB_SERVICE_NOTIFICATION Test", "Some message... will not work on Vista+")

The above demo code works in Windows 7 in that it displays a message over the login screen, but the workstation is locked instead of logged out. I want to know if the message box will display when no user is logged in.  So I changed the demo code to this:

#include <MsgBoxConstants.au3>
#include <AutoItConstants.au3>

;lock workstation
;DllCall('user32.dll', 'int', 'LockWorkStation')

;logout
Shutdown ($SD_LOGOFF)

Sleep(4000)

MsgBox($MB_SERVICE_NOTIFICATION, "$MB_SERVICE_NOTIFICATION Test", "Some message... will not work on Vista+")

Now I can test $MB_SERVICE_NOTIFICATION when the workstation is locked versus when the user is logged out.  And what I'm seeing is that when the user is logged out $MB_SERVICE_NOTIFICATION does not enable messages to be displayed. 

Is there any method for displaying a message on the login screen when no user is logged in?  My goal, BTW, is to run a script at night while the user is away from the computer and leave a message on the login screen for the user to see upon returning to work the next day.

 

Edited July 10, 2015 by timmy2
clarification

[BrewManNH]

If you log off, anything you're running will shut down. You'd probably need to run it as a scheduled task to test it that way.

[JohnOne]

Or perhaps as a servive.

[timmy2]

Thank you to both BrewManNH and JohnOne.  I must've been editing my post while you were replying. 

I am running my script from Task Scheduler, at midnight.  The script runs fine; it's just that messages are not displayed if the user happens to logout before going home. I thought maybe  $MB_SERVICE_NOTIFICATION would enable those messages to appear regardless of whether the user is logged in or not.

Edited July 10, 2015 by timmy2

[Danyfirex]

I think your looking for this.

I did no read well :/ sorry.

 

Saludos

Edited July 10, 2015 by Danyfirex

[BrewManNH]

From reading the MSDN page that flag is used for an interactive service that needs to display a message, it probably won't work as a normal task.

[timmy2]

From reading the MSDN page that flag is used for an interactive service that needs to display a message, it probably won't work as a normal task.

Thank you for that.

[nitekram]

You might want to try a program called http://www.kixtart.org/