added failing compilation test for the case of missing handler in Bind() call

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60213 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/events/evthandler.cpp

@@ -381,6 +381,11 @@ void EvtHandlerTestCase::InvalidBind()
     handler.Bind(MyEventType, f);
 #endif
 
+    // the handler can't be omitted when calling Bind()
+#ifdef TEST_INVALID_BIND_NO_HANDLER
+    handler.Bind(MyEventType, &MyHandler::OnMyEvent);
+#endif
+
     // calling a derived class method with a base class pointer must not work
 #ifdef TEST_INVALID_BIND_DERIVED
     struct C1 : wxEvtHandler { };