Method GetIDFromRectangle

imgui_tiny_app/imgui/imgui.cpp:9832–9838

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// "
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;
}

void ImGui::PushID(const char* str_id)
{