ext/wxListBook.cpp in rwx-0.0.1.dev vs ext/wxListBook.cpp in rwx-0.0.1.1.dev

@@ -43,12 +43,15 @@
 		if(rb_obj_is_kind_of(hash,rb_cHash))
 		{
 			set_hash_option(hash,"id",id,unwrapID);
 			set_hash_option(hash,"style",style);
 		}
-
-		_self->Create(unwrap<wxWindow*>(parent),id,wxDefaultPosition,wxDefaultSize,style);
 		
+		if(nil_check(parent))
+			_self->Create(unwrap<wxWindow*>(parent),id,
+				wxDefaultPosition,wxDefaultSize,style
+			);
+
 	}
 
 	rb_call_super(argc,argv);
 
 	return self;