Explore code review techniques and ImGui layer event handling in this 39-minute video from The Cherno's Game Engine series. Learn about implementing a dark theme, merging code, managing frame buffer and input destructors, and supporting multiple platforms including Windows, Linux, and Mac OS. Dive into refactoring practices, WASD input handling, and the intricacies of ImGui events. Discover how to exclude the viewport, handle window focus events, and rewrite the layer stack for improved performance. Master the art of blocking events and gain valuable insights into game engine development.