如何用gdiplus判断图形相交状态？

如何用gdiplus判断图形相交状态？
gdi可以做到，但由于我所用到图形是小数，所以考虑用gdipus来做，请大家指教下，谢谢

Region::Intersect The Region::Intersect method updates this region to the portion of itself that intersects the specified path's interior. https://docs.microsoft.com/en-us/windows/win32/api/gdiplusheaders/nf-gdiplusheaders-region-intersect(constgraphicspath)