support user data
diff --git a/xmltest.cpp b/xmltest.cpp
index 2009d1a..3fdc0bd 100644
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -416,6 +416,7 @@
 		}

 		element->InsertEndChild( sub[2] );

 		XMLNode* comment = element->InsertFirstChild( doc->NewComment( "comment" ) );

+		comment->SetUserData((void*)2);

 		element->InsertAfterChild( comment, sub[0] );

 		element->InsertAfterChild( sub[0], sub[1] );

 		sub[2]->InsertFirstChild( doc->NewText( "& Text!" ));

@@ -425,6 +426,7 @@
 		XMLTest( "Programmatic DOM", 2, doc->FirstChildElement()->LastChildElement( "sub" )->IntAttribute( "attrib" ) );

 		XMLTest( "Programmatic DOM", "& Text!",

 				 doc->FirstChildElement()->LastChildElement( "sub" )->FirstChild()->ToText()->Value() );

+		XMLTest("User data", 2, (int)comment->GetUserData());

 

 		// And now deletion:

 		element->DeleteChild( sub[2] );