return best representation of polymorphic types (fixes #105)
diff --git a/example/example16.cpp b/example/example16.cpp
new file mode 100644
index 0000000..350435f
--- /dev/null
+++ b/example/example16.cpp
@@ -0,0 +1,24 @@
+/*
+ example/example16.cpp -- automatic upcasting for polymorphic types
+
+ Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch>
+
+ All rights reserved. Use of this source code is governed by a
+ BSD-style license that can be found in the LICENSE file.
+*/
+
+#include "example.h"
+
+struct BaseClass { virtual ~BaseClass() {} };
+struct DerivedClass1 : BaseClass { };
+struct DerivedClass2 : BaseClass { };
+
+void init_ex16(py::module &m) {
+ py::class_<BaseClass>(m, "BaseClass").def(py::init<>());
+ py::class_<DerivedClass1>(m, "DerivedClass1").def(py::init<>());
+ py::class_<DerivedClass2>(m, "DerivedClass2").def(py::init<>());
+
+ m.def("return_class_1", []() -> BaseClass* { return new DerivedClass1(); });
+ m.def("return_class_2", []() -> BaseClass* { return new DerivedClass2(); });
+ m.def("return_none", []() -> BaseClass* { return nullptr; });
+}