C++ IWebBrowser2 - IE - Access Image Cache

Question

Hello, I am currently automating some requests with the IWebBrowserApp Object. Now I want to save an image, that is NOT saved in Cache (due to http headers). Also I can not just download it from the image url, not even when using a second IWebBrowserApp Object and getting the response as stream (html code, or server errors to prevent downloading the image directly).

How can I access IE's internal image cache? I know that IE saves EVERY image it displays, even the ones that should not be cached.

Any idea? I really must access this file. I could also deal with hooking some functions to get the image data.

Thanks for reading...