Shutdown function perform logoff windows while using Windows API

Question

I have used the following code to shutdown the system but it will perform logoff windows

Private Const EWX_LogOff = 0  
Private Const EWX_SHUTDOWN = 1  
Private Const EWX_REBOOT = 2  
Private Const EWX_FORCE = 4  

Public Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long

Public Sub ShutDownComputer()  
  Call ExitWindowsEx(EWX_FORCE, &HFFFFFFFF)   
End Sub

Binil · Accepted Answer · 2011-01-10 15:54:16Z

2

try this

Private Const EWX_POWEROFF = 8 
Call ExitWindowsEx(EWX_POWEROFF, &HFFFFFFFF)

also this link may help you

Why simply calling ExitWindowsEx won’t Shutdown/Restart the Computer

edited Jan 10, 2011 at 15:54

answered Jan 10, 2011 at 15:11

Binil

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2 Comments

Anders Over a year ago

While this is correct, you really should say that 8 is EWX_POWEROFF and poweroff might not work on really old machines (Win95/NT4 era)

Suriyan Suresh Over a year ago

thanks for your response,I am using above code but still the same problem persists. I am using it in Windows 7

Eugene Mayevski 'Callback · Accepted Answer · 2011-01-10 15:01:33Z

1

Try combining SHUTDOWN with FORCE.

answered Jan 10, 2011 at 15:01

Eugene Mayevski 'Callback

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1 Comment

Anders Over a year ago

And the reason for this is that FORCE is a flag, the other constants specify which shutdown operation (You could probably combine SHUTDOWN with POWEROFF, otherwise you should only specify one of the "operations")

Andrei Pana · Accepted Answer · 2011-01-10 15:07:26Z

0

In addition to what Eugene said, its better to use the declaration from pinvoke:

Declare Function ExitWindowsEx Lib "user32" (ByVal dwOptions As Int32, ByVal dwReserved As Int32) As Int32

which declares as arguments two four-bytes integers (as the ExitWindowsEx function in the dll).

answered Jan 10, 2011 at 15:07

Andrei Pana

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