If someone wants to look into it further there are some open source projects that do clipboard sharing over ip networks (wlan/lan) which would also be nice.

- The best i know of is synergy. It's a comlete software KVM switch that also does clipboard sharing.
- Then there is a windows only tool beyondcopy
- And there is this tool supporting KDE and Windows: netclipboard


Edit: I thought a little about a bluetooth implementation. I imagine there could be problems intercepting the pushed file on the receiving device. I don't know if it's possible, but you would have to implement it in a way that the bluetooth stack does not handle the received "thing" before your application does. or maybe you can make the stack hand it over to your app. I'm a bluetooth newb btw, just thinking loudly