delegate NulData AfArch.AfDal.Gtk.CustomNulCloseHandler IAsyncResult  ar  ) 

Handler definition for the custom close method.

This custom close method is used to finalize an invocation produced, returning the NulData value that the custom invocation is requesting.

Here is an example on how to write a handler for this method:

 NulData closeInvocation (IAsyncResult ar) {
     // close the invocation return the object inside
     Commit dlgt = ar.AsyncState as Commit;
     // return the result
     return dlgt.EndInvoke (ar);

ar Async object that have to be used to return the invocation result.