Reading PSD file format

Question

I wonder if this is even possible. I have an application that adds a context menu when you right click a file. It all works fine but here is what I\'d like to do:

If

Answer 1

For people who are reading this now: the link from accepted answer doesn't seem to work anymore (at least for me). Would add a comment there, but not allowed to comment yet - hence I'm adding a new answer.

The working link where you can find the psdplugin code for Paint.Net: https://github.com/PsdPlugin/PsdPlugin