title: C#, default parameter value for an IntPtr
body: <p>I'd like to use a default parameter value of <a href="https://msdn.microsoft.com/en-us/library/system.intptr.zero(v=vs.110).aspx" rel="noreferrer"><code>IntPtr.Zero</code></a> in a function that takes an <code>IntPtr</code> as an argument. This is not possible as <code>IntPtr.Zero</code> is not a compile time constant.</p>
  
  <p>Is there any way I can do what I want?</p>