C# Signature:

[DllImport("user32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool ExitWindowsEx(ExitWindows uFlags, ShutdownReason dwReason);

VB Signature:

<DllImport("user32.dll", SetLastError:=True)> _
Shared Function ExitWindowsEx( _
     ByVal uFlags As ExitWindows, _
     ByVal dwReason As ShutdownReason) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

Alternative VB Signature:

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

User-Defined Types:

None.

Notes:

Parameters:

• uFlags - See ExitWindows
• dwReason - See ShutdownReason

Tips & Tricks:

To shut down or restart the system on NT/2K/XP, the calling process must use the AdjustTokenPrivileges function to enable the SE_SHUTDOWN_NAME privilege.

If uFlags is set to 'LogOff', then the call will fail if the process calling it is a non-interactive-process (i.e a Windows Service). Read the ExitWindowsEx on MSDN for more info. All other values for uFlags work fine for non-interactive-processes.

Sample Code:

    class Class1
    {
        [DllImport("user32.dll")]
        static extern bool ExitWindowsEx(ExitWindows uFlags, ShutdownReason dwReason);

        [STAThread]
        static void Main(string[] args)
        {
            ExitWindowsEx(ExitWindows.LogOff, ShutdownReason.MajorOther & ShutdownReason.MinorOther);
            //this will cause the computer to logoff.
        }
    }

Alternative Managed API:

Do you know one? Please contribute it!

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).