You can clone my project based on the [ultralight-quick-start] for detail info from https://gitee.com/xingrui94/learn_ultralight
First step: Remove the parameter "ultralight::Window* window" in function OnClose() and OnResize() in MyApp.h and MyApp.cpp.

Second step: Add this statement "app_->set_window(*window_.get());" in MyApp.cpp file,and change the first parameter in function Overlay::Create(). The flowing picture is my code, it is working.
