/home/buildbot/worker/l-upphub-XMLMenu/build/XMLMenu/examples/TestXMLMenu/TestXMLMenu.cpp:17:4: error: call to member function 'Add' is ambiguous
                .Add("New"                      , callback(dummyCb))
                ~^~~
/home/buildbot/worker/l-upphub-XMLMenu/build/XMLMenu/XMLMenu/XMLCommand.h:89:16: note: candidate function
                XMLCommands &Add(const char *id, Function<void()> cb)
                             ^
/home/buildbot/worker/l-upphub-XMLMenu/build/XMLMenu/XMLMenu/XMLCommand.h:94:16: note: candidate function
                XMLCommands &Add(const char *id, Function<void(XMLToolBar &)> mc)
                             ^

struct DragTest : TopWindow {
	Rect r;
	bool dragging = false;
	void Layout() override {
		r = GetRect();
	};

	void Paint(Draw& w) override {
		w.DrawRect(GetSize(), White());
		w.DrawText(100, 100, AsString(r));
		if(dragging)
			w.DrawText(100, 130, "Dragging");
	}
	
	TimeCallback tm;
	
	DragTest() {
		tm.Set(-10, [=] {
			Rect rr = GetRect();
			if(r != rr) {
				r = rr;
				if(GetMouseLeft())
					dragging = true;
				Refresh();
			}
			if(!GetMouseLeft()) {
				if(dragging) {
					dragging = false;
					Refresh();
				}
			}
		});
	}
};