: Using CreateWindowEx with flags like WS_EX_TOPMOST , WS_EX_LAYERED , and WS_EX_TRANSPARENT to ensure the overlay doesn't block clicks from reaching the target game.
Unlike "internal" tools that inject code directly into a target process, an external overlay runs as a standalone executable. ImGuiExternal-master.rar
Below is an overview of the technical concepts and implementation details related to such a project. Core Concepts of External ImGui Overlays : Using CreateWindowEx with flags like WS_EX_TOPMOST ,
: The program creates a transparent Windows API window that sits on top of all other windows (Topmost). ImGuiExternal-master.rar