C# Signature:

[DllImport("advapi32.dll", SetLastError=true)]
static extern bool AbortSystemShutdown(string lpMachineName);

VB Signature:

<DllImport("advapi32.dll", SetLastError:=True)> _
Public Function AbortSystemShutdown( _
    ByVal lpMachineName As String) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

User-Defined Types:

None.

Alternative Managed API:

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Notes:

None.

Tips & Tricks:

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Sample Code:

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See the link: http://msdn.microsoft.com/en-us/library/windows/desktop/aa376861(v=vs.85).aspx for C++ example code.