Method GetIDFromRectangle

tutorials/common/imgui/imgui.cpp:3458–3464

This is only used in rare/specific situations to manufacture an ID out of nowhere.

// This is only used in rare/specific situations to manufacture an ID out of nowhere.
ImGuiID ImGuiWindow::GetIDFromRectangle(const ImRect& r_abs)
{
    ImGuiID seed = IDStack.back();
    ImRect r_rel = ImGui::WindowRectAbsToRel(this, r_abs);
    ImGuiID id = ImHashData(&r_rel, sizeof(r_rel), seed);
    return id;
}

static void SetCurrentWindow(ImGuiWindow* window)
{