Learn how to create graphical user interface (GUI) applications in C++ using ImGui and Vulkan with the Walnut framework. Explore the process of building lightweight and easy-to-setup GUI applications, perfect for graphics and rendering-related projects. Discover how to utilize Walnut's native integration with Vulkan and its implementation of Dear ImGui. Follow along as the creator demonstrates how to use Walnut to make an app, explains the framework's inner workings, and discusses potential future expansions and features. Gain insights into developing custom UI elements and optimizing performance for C++ applications with modern graphics APIs.