Is it possible to drag-n-drop into x11 forwarded application? For instance, I'm forwarding skype and I'd like to send a file by dropping it into message box. Yes, I know I can work it around. This question is not skype-specific.
Draging and dropping a file to an application will depend on how the application handles the drop. But in any case, if the file that you're dropping does not exist on the Machine that is x-forwarding to your machine, the drop will fail. But, for example, if you're dropping a file that is on a network share AND that machine has the exactly same share, it will work. When you drop a file, normally the drop is a full path to the file, nothing else. If both machines can see the path, it will work, if not, fail.