QueueUserAPC

[DllImport("kernel32.dll")] public static extern IntPtr QueueUserAPC(IntPtr pfnAPC, IntPtr hThread, IntPtr dwData);

Boo Signature:

[DllImport("kernel32.dll", SetLastError : true)]
def QueueUserAPC(pfnAPC as IntPtr, hThread as IntPtr, dwData as UInt32) as UInt32:
     pass