Function FindFrontMostVisibleChildWindow

imgui_tiny_app/imgui/imgui.cpp:6101–6107

}

static ImGuiWindow* FindFrontMostVisibleChildWindow(ImGuiWindow* window)
{
    for (int n = window->DC.ChildWindows.Size - 1; n >= 0; n--)
        if (IsWindowActiveAndVisible(window->DC.ChildWindows[n]))
            return FindFrontMostVisibleChildWindow(window->DC.ChildWindows[n]);
    return window;
}

static void ImGui::RenderDimmedBackgroundBehindWindow(ImGuiWindow* window, ImU32 col)
{