drag and drop

["philsjunk" <philbaseless-gtk yahoo com>]

I need to drag and drop from my app to the opsys desktop or folder.

This is an email so it is part of a mailbox file. Or it could be some other part 
like an attachment of the email.

does mailbox:// protocol automatically handle the drop in opsys?

I find a lot of code using drag and drop but they are text messages or url's and 
not particular to this situation where the app may need to formulate the data 
and file name.


--
Phil