Internal DLL Cheat Development for Killing Floor (Part 6) – Hooking DirectX9 EndScene with MinHook and Creating a UI with ImGUI

Introduction In this post we’ll hook DirectX9’s EndScene to render an ImGui overlay. By the end, you’ll have a working menu drawn every frame, with input handled via a Win32 WndProc callback. Prereqs: Visual Studio, DirectX9 headers/libs, MinHook, ImGui, and a matching architecture (x86 game → x86 DLL).