Accessing binary data from container fields

I have a solution which generates RTF word files from text fields that the user fills in.

I would like to be able to insert images into the files. My idea was to have the user paste images, tables etc into a container field. I could then grab the raw data and insert it into the RTF stream with appropriate tags.

Assuming the data from the container field would be usable, how do I access the raw binary data form a container field? Is this possible?

Cant seem to find much discussion on accessing container field data and can't get any standard calc functions to reveal it. Am I missing something here?

One way I suppose is to get the image file contents using Troi File which we have and have user navigate to it and select, But id rather just have them paste into a container field.

Thanx

Mike