Define UI elements (sliders, buttons, text) using ImGui::Begin() and related functions. Render the frame and swap buffers.
: 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.
: A window procedure (WndProc) captures mouse and keyboard events to interact with the overlay without affecting the target application below it. Implementation Workflow
: Setting up the SwapChain and Device context for the chosen graphics API (e.g., DX11) to draw the ImGui contents. Main Loop : Poll for window messages. Start a new ImGui frame.
: The overlay typically uses a graphics API like DirectX 11 or Vulkan to render the ImGui frames.