update swig on windows

winx64/bin/swigwin-4.0.0/Examples/d/callback/d2/runme.d

@@ -0,0 +1,36 @@
+module runme;
+
+import std.stdio;
+import example;
+
+public class DCallback : Callback {
+  public override void run() {
+    writeln( "DCallback.run()" );
+  }
+}
+
+void main() {
+  auto caller = new Caller();
+
+  writeln( "Adding and calling a normal C++ callback" );
+  writeln( "----------------------------------------" );
+  {
+    scope auto callback = new Callback();
+    caller.setCallback(callback);
+    caller.call();
+    caller.resetCallback();
+  }
+
+  writeln();
+  writeln( "Adding and calling a D callback" );
+  writeln( "-------------------------------" );
+  {
+    scope auto callback = new DCallback();
+    caller.setCallback(callback);
+    caller.call();
+    caller.resetCallback();
+  }
+
+  writeln();
+  writeln( "D exit" );
+}