I had to do something, as my brain stopped functioning, well it felt like it. Anyway what I am looking at, where is the information held when you do copy and paste? As you Klipper is the KDE Clipboard Manager, the bit that lets you see and manipulate the content in various ways.
But when I wrote Clipboard Manager in the original post, something happened in my brain, started up again so I got to work. I forgot X11 and X-window etc (not very comfortable with these words, meaning I don't really know how it operates). Apparently here is two buffers called SELECTION and PRIMARY, one or both of these need to communicate across the wine boundary to the clipboard (Windows) so that if I copy something in Linux Opera it can be picked up in my wine text editor plus AceText another nimble tool.
Well put it this way now the details get complicated but I starting to be able to specify what I know. Too late tonight to find out more. ZZzz....